tyre pressure for autocross
May 19, 2004, 11:58 AM
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It depends. Are you on stock tires? Are you in the Evo 7 or 8? In the 8 on stock tires and stock suspension, I use 42psi up front and 38psi in the rear. Try using shoe polish or chalk to mark your sidewalls to see how far they roll over upon cornering. Tires are designed to roll over to the little arrows on the sidewall for maximum traction. Experiment until the chalk/polish rubs off to this point.
May 19, 2004, 12:06 PM
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Originally Posted by whitet777
It depends. Are you on stock tires? Are you in the Evo 7 or 8? In the 8 on stock tires and stock suspension, I use 42psi up front and 38psi in the rear. Try using shoe polish or chalk to mark your sidewalls to see how far they roll over upon cornering. Tires are designed to roll over to the little arrows on the sidewall for maximum traction. Experiment until the chalk/polish rubs off to this point.
hi !
im running a stock evo 7 with advan
May 19, 2004, 04:20 PM
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see how 42 psi and 38 psi feel. the guys i autocross with use about that much. and after the first run, see how much of the tire is rolling. u can use chalk or shoe polish like someone said to mark up part of the tread and the sidewall. this way u can tell how much your tire is rolling without just guessing..
if the chalk on the tire is still on most of the sidewall, take some air out. if not, keep the air in there. if you notice the chalk is gone on the sidewall, you need to put more air in. after you get that done, see how the car feels and adjust accordingly. have fun!
if the chalk on the tire is still on most of the sidewall, take some air out. if not, keep the air in there. if you notice the chalk is gone on the sidewall, you need to put more air in. after you get that done, see how the car feels and adjust accordingly. have fun!
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