Tires for track day

[02XXCA]

I'm planning on my first track day and am getting low on front tread on an Avon 49, should I go ahead and use it for the track or am I better off replacing before I get on the track? This will be my first time on the track so I'm not sure what to expect.

[SlowStad]

fresh tires never hurt. Get some good sticky ones, I'm having great results with Michelin Pilot Power 2ct's. Pirelli also makes a nice one. I haven't had experience with Bridgestone BT's on the track but I know the 014's are awesome for street riding, though I'd probably go with the Pilot 2ct's as they seem to be the stickiest street comp tire at this time.

Don't skimp on tires my friend, especially if you don't feel like repairing your bike. Lowside, turn 3 at PIR taught me that lesson.

Better yet, buy some race take off's and use those. They'll have WAY more traction than your worn out Avons

Good luck HAVE fun and don't try to be Vale your first time out and you'll be fine

[Will]

As a person who just does trackdays and doesn't race (yet), I don't see much point in all out race tires. Race takeoffs may be heat cycled past their useful life, and although they are cheap, they take a while to get up to temperature and are usually a bit less sticky when cold. A new rider on the track may not even generate enough heat to get them to work properly. I still use Pilot Powers, and I haven't tried the 2CT version yet. Next time I get tires, I might, but so far I haven't had any problems. Rick, of SB Motorsports, usually supports trackday organizations as well as WMRRA, so you can get a good price for tires at the track as long as you can pull your own wheels. It doesn't take long for SB to mount up a set of tires for you. Rick says he has had people use Pilot Powers successfully to laptimes in the 1:35 range before any need to upgrade. Your bike and riding style will have an effect, but my guess is that you will be 15 seconds off that pace at a minimum on your first trackday ever. It takes a while to figure out how to ride on the track. It is different from riding on the street, so a fast street rider won't necessarily be a fast track rider right away. You could be the exception who comes in and sets the place on fire, but only you know if it will happen like that.

[Mr Sunshine]

What I have learned from Rick and Michael about which tires to use for track days is the following:

1. If your bike is slipping and sliding at the middle to end of your season its time for race tires as you are overheating the street tires.

2. If you run race tires, run warmers. No reason to go out there and waste 5 mins of your 20mins session trying to get your tires up to temp and then increase your chance of crashing.


As to running :35's on Powers. Sure you can do it....but do realize the guy who does this can go much faster on race tires. When you are out there experimenting it can pay to have the sticker rubber as you have a larger margin of error. Now....this doesn't mean go out and run race tires because if you aren't fast enough those tires aren't going to be as good a the street based tires because they aren't hot enough.

So there is a line on when to switch and you'll know when you have crossed it. And you haven't always crossed it if you crash. Its mostly when you are out there trying to do some stuff and the tires keep sliding on you. But the most important thing is you'll know when you need to switch so just listen to yourself.

[Bad Dog]

Some good advice but I have never seen a race tire past its useful life yet, unless the cords are showing. For a track day guy, there perfect.

Pirelli race tires are great track day tires, you can buy take offs for cheap and they warm up within 2 laps without tire warmers and no, you don't need them for track days.

If you want to run street tires, which is a good way to figure out your limits safely, is run any decent street tire, Dunlop, Pirelli, Bridgestone, Michelin etc, there all so close I bet you couldn't tell.

Get some frame sliders and make some for the rear, this will limit your damage if you drop it.

Remember, easy on the brake, easy on the gas, look sort of ahead and be smooth, :confused: :clap:

[Jaybo]

I've been doing track days for the last three years and all I ever use is take-offs. I recommend supercorsa's they've always worked great for me. Take-offs are affordable and for me the grip works excellent, I rarely ever get slides and even then they're nothing scary. A set of take-offs usually lasts me about three track days. My brother actually bought a new set of Supercorsa's this year for his first year racing and ended up going slower..lol

[dakh]

One more concern is that takeoffs are useless in wet. That was what made me go out and buy PP's. Basically I'd have a choice of having 3 sets of wheels (street, dry track, wet track) or one. The choice is obvious.

Also, I don't quite get the idea about tire margins and race tires helping any. If you're going all-out you should be riding on the edge of traction anyway, so race tires will just increase the speed you're going to be at when the limit is reached. Why would you want higher speeds when you're "experimenting"?

Or, race tires have a more gradual let-go than, say, PP's?

[Bad Dog]

One more concern is that takeoffs are useless in wet. That was what made me go out and buy PP's. Basically I'd have a choice of having 3 sets of wheels (street, dry track, wet track) or one. The choice is obvious.

Also, I don't quite get the idea about tire margins and race tires helping any. If you're going all-out you should be riding on the edge of traction anyway, so race tires will just increase the speed you're going to be at when the limit is reached. Why would you want higher speeds when you're "experimenting"?

Or, race tires have a more gradual let-go than, say, PP's?


What are PP's?

As for race tires helping, sure they help, they let you go faster, safely. If you've ever pushed a street tire on the track, they get greasy and squirmy and can suddenly pitch you off. Race tires are more predictable but for many, street tires are all they need and like I said earier, I would start out with street tires so you can learn the limits, then move to race tires.

[Jaybo]

Simon I think PP=Pilot powers.

[Mr Sunshine]

What are PP's?

Pilot Powers

[dakh]

What are PP's?

As for race tires helping, sure they help, they let you go faster, safely. If you've ever pushed a street tire on the track, they get greasy and squirmy and can suddenly pitch you off. Race tires are more predictable but for many, street tires are all they need and like I said earier, I would start out with street tires so you can learn the limits, then move to race tires.

Still don't get it. Why would I want to go faster in the absolute sense? On a track day shouldn't I simply want to go as fast as my hardware allows? As far as learning goes a 2 second difference in lap times wouldn't matter much as long as you've pushed it to the limit, would it?

[dakh]

What are PP's?

As for race tires helping, sure they help, they let you go faster, safely. If you've ever pushed a street tire on the track, they get greasy and squirmy and can suddenly pitch you off. Race tires are more predictable but for many, street tires are all they need and like I said earier, I would start out with street tires so you can learn the limits, then move to race tires.

Also, what are lap times at Pacific for a stock 600 where street tires become "greasy"?

[Mr Sunshine]

Still don't get it. Why would I want to go faster in the absolute sense? On a track day shouldn't I simply want to go as fast as my hardware allows? As far as learning goes a 2 second difference in lap times wouldn't matter much as long as you've pushed it to the limit, would it?

The point is on a race tire the limit is higher (assuming you are going fast enough to keep that tire up to temp). Thus when you accidently brake too long during tip in cause you are trying to do more late braking you have more room for error. Or if you are trying to rail a corner harder with higher corner speed you aren't fighting the bike low siding or sliding because the race tire has a higher margin for error. Or if you are coming into a corner hotter and while you are leaned over you panic for a moment and tap that front brake, it is less likely to loose traction and make you pay for that mistake.

These are all things that happen when you are pushing yourself and trying to continue decreasing your lap times. When you get to the point where you are riding the edge of the street tire you don't have any margin for error so if you are experimenting and make a mistake, you instantly pay vs making the mistake and not paying for it (and you know you made a mistake).

[dakh]

The point is on a race tire the limit is higher (assuming you are going fast enough to keep that tire up to temp). Thus when you accidently brake too long during tip in cause you are trying to do more late braking you have more room for error. Or if you are trying to rail a corner harder with higher corner speed you aren't fighting the bike low siding or sliding because the race tire has a higher margin for error. Or if you are coming into a corner hotter and while you are leaned over you panic for a moment and tap that front brake, it is less likely to loose traction and make you pay for that mistake.

These are all things that happen when you are pushing yourself and trying to continue decreasing your lap times. When you get to the point where you are riding the edge of the street tire you don't have any margin for error so if you are experimenting and make a mistake, you instantly pay vs making the mistake and not paying for it (and you know you made a mistake).

Ok, got it, thanks! I guess I have an instintual preference for encountering tire limits at lower speeds :) It will happen sooner or later so seems like runnig race tires just puts it off.

[Bad Dog]

Still don't get it. Why would I want to go faster in the absolute sense? On a track day shouldn't I simply want to go as fast as my hardware allows? As far as learning goes a 2 second difference in lap times wouldn't matter much as long as you've pushed it to the limit, would it?

So you don't want to go faster or push your own limits?

As I said, street tires go off and become unstable, If your a new rider or want to learn, then I would find that point then switch to race tires. If you don't want to go faster or find your limits, stay with street tires, :)

[dakh]

So you don't want to go faster or push your own limits?

As I said, street tires go off and become unstable, If your a new rider or want to learn, then I would find that point then switch to race tires. If you don't want to go faster or find your limits, stay with street tires, :)

I'm boundless and everlasting, no point trying to find my limits :). I want to find equipment's limits, yes. Not mine, that's the thing being pushed.

[Mr Sunshine]

Also, what are lap times at Pacific for a stock 600 where street tires become "greasy"?

Its about the track temp and how long you run them. But I generally say when you are running upper 30's to low 40's its time to really think about switching.

[Mr Sunshine]

Ok, got it, thanks! I guess I have an instintual preference for encountering tire limits at lower speeds :) It will happen sooner or later so seems like runnig race tires just puts it off.

When it happens, then you'll know when to switch to race tires. :)

[tophyr]

Ok, got it, thanks! I guess I have an instintual preference for encountering tire limits at lower speeds :)

Crashing at 75mph sucks just as bad as crashing at 95mph. Might not seem like a big difference speed-wise, but that's about the difference between a beginner in T2 and a Eli/Sully/Ross/Pierce/etc in T2.

And, like Sunshine said, the street tire will respond to your mistake by bucking you. The race tire might lose traction as well, but you'll stand a much better chance of recovering it.

[redrider2]

I predict new tires are in your future.

I run Avon 59/60's on my 929 and love them for good all around performance. I'm not the fastest guy out there by any means but don't have any issues running 40's on the Avon's. I can push pretty hard on the second lap and they're up to temp and ready to go. If you like the Avon's and just doing track days, I'd say stick with them.

[Will]

When it happens, then you'll know when to switch to race tires. :)

Well, jeez, then I am pretty close to needing track tires.:confused:

For what its worth, the most fun I ever had sliding around was on BT010s three or four years ago. They went off on a hot day, and were greasy but predictable. It was a whole lot of fun. Newer tires stick better and at much higher speeds, so I don't know what they are like when they go completely off.

[Bad Dog]

Well, jeez, then I am pretty close to needing track tires.:confused:

For what its worth, the most fun I ever had sliding around was on BT010s three or four years ago. They went off on a hot day, and were greasy but predictable. It was a whole lot of fun. Newer tires stick better and at much higher speeds, so I don't know what they are like when they go completely off.

And this exactly what I am saying, learn what a sliding bike feels like so you if per chance you do it on the street, you don't freak out and do something stupid.

[Will]

And this exactly what I am saying, learn what a sliding bike feels like so you if per chance you do it on the street, you don't freak out and do something stupid.

Fun AND educational. Can't beat that.:)

[SlowStad]

If you've ever pushed a street tire on the track, they get greasy and squirmy and can suddenly pitch you off. Race tires are more predictable but for many, street tires are all they need and like I said earier, I would start out with street tires so you can learn the limits, then move to race tires.

Yep, that was my reference earlier. Street tires can only take you so far and in my experience you'll get confident and all the sudden you've reached the limit of those tires and they get very unpredictable. 2ct's are the ticket if you want street tires, but I would recommend take offs or if you've got cash grab yourself some PP race. I spent $430 on a new set (soft fr, med/soft rear), they've gotten me farther than any tire I've ever ridden on. One lap going faster than any street ride and they were up to temp (I can't afford tire warmers or a generator so just being careful is good enough for now.) Keep in mind I'm slow though :) Only posting 1:45 at PR so any sticky race tire is like heaven to me.

Confidence is huge on the track and tires are the easiest thing to give you peace of mind. Don't skimp on them

[Bad Dog]

Again, my opinion but if your using tire warmers on a street bike for a track day, well, :lmao: :confused:

[dakh]

Yep, that was my reference earlier. Street tires can only take you so far and in my experience you'll get confident and all the sudden you've reached the limit of those tires and they get very unpredictable. 2ct's are the ticket if you want street tires, but I would recommend take offs or if you've got cash grab yourself some PP race. I spent $430 on a new set (soft fr, med/soft rear), they've gotten me farther than any tire I've ever ridden on. One lap going faster than any street ride and they were up to temp (I can't afford tire warmers or a generator so just being careful is good enough for now.) Keep in mind I'm slow though :) Only posting 1:45 at PR so any sticky race tire is like heaven to me.

Confidence is huge on the track and tires are the easiest thing to give you peace of mind. Don't skimp on them


What bike are you on? I did 1:49 on my first track day on Mon on a 100% stock '03 gix 600 on power 2ct's, and I'm sure I'll be at lower 40's very soon if I keep at it. You're saying even at those speeds race tires make a big difference? Damn!

[whtnxt?]

I'm running the Avon Viper's Supersport also. Nice tires for the street, did a track day and was happy. I've contacted Avon directly on their PSI recommendations and found them to be slightly higher then what I found was optimum for me.

[SlowStad]

What bike are you on? I did 1:49 on my first track day on Mon on a 100% stock '03 gix 600 on power 2ct's, and I'm sure I'll be at lower 40's very soon if I keep at it. You're saying even at those speeds race tires make a big difference? Damn!

Nope I think the 2ct's are the bees knees for track days + street riding. But if you're on straight street tires (your gxsr came stock with Bridgestone BT014's if I'm not mistaken) you might find youself wanting more.

I don't believe any street bikes are coming stock w/ 2ct's, I seem to see alot of stock (showroom) trim shod with the BT014's. Like I said above brilliant street tires but I found them lacking on the track.

I referenced race take off's because you can get a set for $100 and they'll probably be the best tires you've been on. I know I didn't state that clearly :) but there it is

[dakh]

Nope I think the 2ct's are the bees knees for track days + street riding. But if you're on straight street tires (your gxsr came stock with Bridgestone BT014's if I'm not mistaken) you might find youself wanting more.

Good, I didn't have race tires in the budget for this season :)

Oh, about takeoffs and heating them up. Wouldn't just running lower pressures fix the not enough heat problem? Or it creates other issues?

[SlowStad]

Good, I didn't have race tires in the budget for this season :)

Oh, about takeoffs and heating them up. Wouldn't just running lower pressures fix the not enough heat problem? Or it creates other issues?

I was curious abt this also and went to the tire rep (yours my vary) and got his recommendation which was 32psi front 22 psi rear. I did that and shaved over 8 seconds off my lap times over the 6 recorded laps I had for my novice heat.

[Mr Sunshine]

Good, I didn't have race tires in the budget for this season :)

Oh, about takeoffs and heating them up. Wouldn't just running lower pressures fix the not enough heat problem? Or it creates other issues?

The carcuss is designed for a particular temp range...use it and don't try to cut corners.

[Mr Sunshine]

Yep, that was my reference earlier. Street tires can only take you so far and in my experience you'll get confident and all the sudden you've reached the limit of those tires and they get very unpredictable. 2ct's are the ticket if you want street tires, but I would recommend take offs or if you've got cash grab yourself some PP race. I spent $430 on a new set (soft fr, med/soft rear), they've gotten me farther than any tire I've ever ridden on. One lap going faster than any street ride and they were up to temp (I can't afford tire warmers or a generator so just being careful is good enough for now.) Keep in mind I'm slow though :) Only posting 1:45 at PR so any sticky race tire is like heaven to me.

Confidence is huge on the track and tires are the easiest thing to give you peace of mind. Don't skimp on them



Who did you buy those tires from? And are they really soft front and med/soft rear or are they a PRC front and a PR4 rear?

[SlowStad]

Who did you buy those tires from? And are they really soft front and med/soft rear or are they a PRC front and a PR4 rear?

I bought them from Western Power Sports new. I work at cycle shop here in Bremerton so got them through the shop. Yep, they are truly soft front med/soft rear, at least according the the Michelin rep at the track (sorry I forgot his name.)

Sorry just reread your post, can you tell me how to identify a PRC and a PR4 and I'll let you know tomorrow what they truly are

[dakh]

The carcuss is designed for a particular temp range...use it and don't try to cut corners.

That's exactly what I'm getting at. If I'm slow and can't get enough heat into them, running lower pressures should fix that and get them to "a particular temp range". That's the commend I've seen many times about novices running race tires - can't heat them up enough.

[SlowStad]

That's exactly what I'm getting at. If I'm slow and can't get enough heat into them, running lower pressures should fix that and get them to "a particular temp range". That's the commend I've seen many times about novices running race tires - can't heat them up enough.

I understand what you're getting at here but take into account that tires not only operate at optimal temp ranges but also at stiffness ratings. If you drop your pressure to a range you think will enhance the time it takes to heat up you might be sacrificing carcass strength which could lead to more severe problems than just proper heat.

One lap at a decent pace should be enought to get a set of take off's up to temp for you. If you push them too hard, they'll let you know :) Once again let me say go out and have FUN and don't try to be a HERO and you'll be fine

[Bad Dog]

Good, I didn't have race tires in the budget for this season :)

Oh, about takeoffs and heating them up. Wouldn't just running lower pressures fix the not enough heat problem? Or it creates other issues?

Take a few laps to heat them up, brake earlier and harder to get some heat into them. I have been racing for 11 years and only started using tire warmers last year as I switched to slicks. :clap:

[Hypnotiq]

I heard about you and tires Simon. :eek: :p

[Bad Dog]

I heard about you and tires Simon. :eek: :p

What have you heard? :confused: :lol:

[SlowStad]

:clap: Take a few laps to heat them up, brake earlier and harder to get some heat into them. I have been racing for 11 years and only started using tire warmers last year as I switched to slicks. :clap:

[Lynk]

My experience... race tires need warmers.

A good hard lap on Michelin Power Race PR1/PR4 out at Spokane in May left me with fairly cold tire going into T2 on my second lap. :( About $500 later, I decided to pick up a generator and warmers. Granted, the experience of running around Spokane in an attempt to find an aluminum welder on a holiday weekend was one that I won't soon forget. :p

Michelin makes two series of Power Race tires: street and track-only. The track-only tires will be slow to heat up; I found that it took around two-and-a-half laps for my tires to be up to full temp. Your results may vary.

[SlowStad]

My experience... race tires need warmers.

A good hard lap on Michelin Power Race PR1/PR4 out at Spokane in May left me with fairly cold tire going into T2 on my second lap. :( About $500 later, I decided to pick up a generator and warmers. Granted, the experience of running around Spokane in an attempt to find an aluminum welder on a holiday weekend was one that I won't soon forget. :p

Michelin makes two series of Power Race tires: street and track-only. The track-only tires will be slow to heat up; I found that it took around two-and-a-half laps for my tires to be up to full temp. Your results may vary.

20 minutes (a track day session) divided by 1:47 (a lap time) = 13 laps which leaves you 11 laps to haul ass

[tophyr]

Good, I didn't have race tires in the budget for this season :)

Oh, about takeoffs and heating them up. Wouldn't just running lower pressures fix the not enough heat problem? Or it creates other issues?

WAY other issues!!!!!

That'd be like leaning out your fuel mixture to make your engine heat up quicker. It would work... but god oh god would it be a bad idea :P

If you're worried about tire heatup, get Pirellis. They'll heat up to temp in literally one lap or less, if you get hard - and i mean hard on the gas and brakes when you're straight up and down. Don't bother with any weaving/snaking whatever, that won't do crap to help you. Gun it out of the corners, and brake harder than you thought possible, and you'll heat your tires quick.

[Bad Dog]

My experience... race tires need warmers.

.


Aha, bullshit, :pokestick: See post 36, :clap:

Again, my 2 cents but when your starting out, money is tight, well for a select few, getting tire warmers and a gennie is friggin expensive. I've said it before and I'll say it again, learn on used tires, cold tires etc when you start out, trust me, it will teach you how to ride than constantly buying new tires and using tire warmers and you'll KNOW what a bad tire feels like. Ask Greg about our battles on money vs frugalness, :lol:

[Lynk]

... getting tire warmers and a gennie is friggin expensive...

... so are repairs. My little spill in Spokane cost me a subframe and fairing stay, repairs to my leathers, and darned near took out my rearset on the left side. Thankfully, I had my shoddy bodywork in place and some fellow racer support was able to save the rearset with a hydrolic press and a reinforcing weld.

[Bad Dog]

... so are repairs. My little spill in Spokane cost me a subframe and fairing stay, repairs to my leathers, and darned near took out my rearset on the left side. Thankfully, I had my shoddy bodywork in place and some fellow racer support was able to save the rearset with a hydrolic press and a reinforcing weld.

Well your doing something wrong. If you looked in the pits 7 years ago, almost no one had them and yet crash's were rare. Not saying it doesn't happen but if you heat the tires up properly in your warm up lap, your usually ok. Everybody's different but you don't need warmers to start racing. Are they nice, sure but a bit of brain power and you can learn how to ride, :clap:

[Hypnotiq]

What have you heard? :confused: :lol:

Greg swore me to secrecy! :pokestick: :p

[Will]

Let me understand the debate a little more clearly. Racing tires make enough difference that you remember to bring your balls to the track and can therefore go faster? I never thought of that!

I have been running laptimes in the low 40s for the most part this summer, and grip has never been a limiting factor. The limiting factors are being an idiot through 5, 6, and 7, wimping out into 2, being in too high a gear in 2, and generally not having any guts at all anywhere around the track. The bike is a 675, so it isn't going to overpower its rear tire like a liter bike would, and corner speeds have never been an issue. I have been running Pilot Power street tires with no issues and have been using the pressures Rick recommends. The tires don't look too shagged at the end of the day, either.

So, for track days, I don't see any reason to use anything more expensive. They stick fine right away, and I haven't had a set go off on me like the 'Stones did. This is track day thinking. Racing is a whole 'nother ball of wax. I don't know anything about what racing requires, since I haven't done it (yet).

[Mr Sunshine]

My experience... race tires need warmers.

A good hard lap on Michelin Power Race PR1/PR4 out at Spokane in May left me with fairly cold tire going into T2 on my second lap. :( About $500 later, I decided to pick up a generator and warmers. Granted, the experience of running around Spokane in an attempt to find an aluminum welder on a holiday weekend was one that I won't soon forget. :p

Michelin makes two series of Power Race tires: street and track-only. The track-only tires will be slow to heat up; I found that it took around two-and-a-half laps for my tires to be up to full temp. Your results may vary.

Part of your problem was the PR4...they actually have less grip than the PR5 which is supposed to be a harder tire.

[Mr Sunshine]

This is track day thinking. Racing is a whole 'nother ball of wax. I don't know anything about what racing requires, since I haven't done it (yet).

The difference: On a track day if you want to take it easy, you do. In a race you push the entire time and there is no "wanting to take it easy".

I typically drop 2 seconds at Pacific between race practice and the race. I drop 3+ seconds from my track days to the race. This is when I am not working on something specific during the track day or the race practice.

Its sorta fun actually cause I sometimes scare myself a little bit in the first lap or two of the race. That gets my adrenline going for the rest of the race. :)

[Bad Dog]

Greg swore me to secrecy! :pokestick: :p

Hehehehehe, I bet he did, :headscratch: :beerchug:

The difference: On a track day if you want to take it easy, you do. In a race you push the entire time and there is no "wanting to take it easy".

I typically drop 2 seconds at Pacific between race practice and the race. I drop 3+ seconds from my track days to the race. This is when I am not working on something specific during the track day or the race practice.

Its sorta fun actually cause I sometimes scare myself a little bit in the first lap or two of the race. That gets my adrenline going for the rest of the race. :)

Exactly, practice, I just tool around. I've had people look at me in practice and go, this guys fast, seriously? But when the race starts, the red mist comes out, :bigok:

[02XXCA]

Thanks for all the input. I will go ahead and install a new Avon 49 that I have already the rear is brand new already after my 4 K bike trip. I plan to take it easy as this is my first time on the track.

Now here is the real question, what air pressure should I run street tires on the track?

[tophyr]

30/30 is a good place to start. Then talk to the tire guys.

[Mr Sunshine]

30/30 is a good place to start. Then talk to the tire guys.

If SB Motorsports is there they have a good pressure for the Avon's as they sell them sometimes.

[02XXCA]

30/30 is a good place to start. Then talk to the tire guys.

Thanks, I heard from a few others that they run in the 30/30 range as well. Since I normally run 6 to 10 pounds more in the winter/summer, what will it feel like at lower pressure?

[Lynk]

Try talking with SB Motorsports. I've got a notion of how I would run them; however, I would defer to their experience - especially if they've had someone else run them.

[JCoulter]

Try talking with SB Motorsports. I've got a notion of how I would run them; however, I would defer to their experience - especially if they've had someone else run them.

Exactly.... don't listen to anyone here about tire pressures UNLESS they run the EXACT same tire that you have on.


Tires optimal pressures are VASTLY different from tire to tire.

My Pilot Power street tires are around 35 rear and 36 front, while the Pilot Power Race tires are around 31 front, 22 rear (IIRC) simply due to the different carcass construction (soft sidewall vs hard sidewall).

Check with Rick Salmon from SB Motorsports. He is very good at knowing which tires require which pressures. Fill both of your tires to approx 40psi prior to getting to the track, then go see Rick to see what he recommends for that particular day, as climate conditions can factor into optimal tire pressures. It is easy to let air out of your tires, but a pain in the butt to put air in. (unless you have an air pump with you, which I always seem to forget)



It is your first trackday, so likely you won't be going fast enough to really need your tires to be perfectly tuned for the conditions, but it never hurts to be as close as possible. Just relax, take time to breathe and ENJOY YOURSELF!!! :D