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Old 05-31-16, 07:01 AM   #11
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Default Re: Questions about track day

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Originally Posted by BlueScooby View Post
wow thats high. I ran 33-35 hot on my MPSS which was way grippier than 40+psi...
Ya, i would agree, but i did have a set of hankook evo that liked it up around 40. i wouldnt start there though.
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Old 05-31-16, 05:38 PM   #12
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Default Re: Questions about track day

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Originally Posted by BlueScooby View Post
wow thats high. I ran 33-35 hot on my MPSS which was way grippier than 40+psi...
I found when I was running mid 30's on the stock dunlops, the pyro showed that the shoulders were getting considerably hotter than the center (~20F). IMO it's easier to start a little high and let some air out if you notice your grip getting greasy.

How did you like those Pilot Super sports on the track?

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Old 06-01-16, 02:54 AM   #13
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Default Re: Questions about track day

Alignment is a big variable. You will be forced to run higher pressures unless you have decent negative camber dialed in.

His first day, he should go with factory pressures and not worry about them.

Check oil, coolant, and concentrate on not crashing your car! It is a blast...then comes the fine tuning during follow on days.
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Old 06-01-16, 03:44 AM   #14
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Default Re: Questions about track day

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Originally Posted by pawlex View Post
I found when I was running mid 30's on the stock dunlops, the pyro showed that the shoulders were getting considerably hotter than the center (~20F). IMO it's easier to start a little high and let some air out if you notice your grip getting greasy.

How did you like those Pilot Super sports on the track?

Yeah higher pressures are probably needed with softer sidewalls too.

The MPSS did great! They are slightly soft for the track, but I thought they held up really well.

Make sure to bleed off air pressure after your first session, my pressure built up an additional 20psi from heat... Cold my tires were at about 20psi to have 35ish psi hot... Actually, you should probably start off with ~25psi cold and see where that takes you.
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Old 06-01-16, 10:04 AM   #15
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Default Re: Questions about track day

25 psi cold? I'd never corner with 25 psi in the tires of my semi-heavy Subaru...my cars spec is 36 factory. Bleed off the excess-yes-as you can always release...just can't put back unless the track as facilities.
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Old 06-01-16, 11:09 AM   #16
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Default Re: Questions about track day

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25 psi cold? I'd never corner with 25 psi in the tires of my semi-heavy Subaru...my cars spec is 36 factory. Bleed off the excess-yes-as you can always release...just can't put back unless the track as facilities.


I wouldn't leave for a hot lap on 25psi tires, no... But by time you finish the warm up lap (not driving hard) your tires are likely at 30psi already and will heat up very quickly after that...
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