I'm a diehard Hoosier man that is switching to 245/265 Kumho V710s for autocross. I'll be running all aspalt courses this year. What are the typical pressures that you guys run? I've heard 30lbs rear, 32 lbs front from one competitor.

This is for A Stock on AP1 rims. I have the Gendron bar, full stiff, Konis, and a typical autocross alignment.

Thanks

 

I have been running 34f 30r.

 

Tire temperature testing on my car suggested that I run in the range or 31 in front and 30 in the rear.

... and you'll want to get the 225s for the front.

 

Thanks for the help guys!

Doh! Brain fart, I meant 225.

 

Running 30psi all around last year gave me moderate understeer with my Comptech on full stiff. More pressure in the front might have helped as well as backing the bar off slightly. I tried neither...

 

Check them after your first run I found mine went up quicker than my street tires even on a cold day.

I went from 35psi to 41 after 1 run I dropped them down to 35 and the car felt fine I will try lower next week.

 

With my tire pyrometer, and my butt dyno, I found 33F and 31R to be the best setting.

 

I run 32f/30r on my AP2 for higher grip surfaces, but found that medium to low-grip asphalt likes 30f/28r better. Thats on the 245/275 AP2 setup though.

 

34F and 30R seems to work real well for me.

 

32f / 29r with comptech bar on hole 2 of 5 (2nd least stiff), fwiw