What is everyone running as far as tire pressure in autocross. I feel like I am running a little bit too high of pressure but who knows. Also information like cold/hot temp, surface, size tire, and how hot the day was would be helpful. I am running stock sized Hankooks on an ap2 with stock shocks if that makes a difference also.

 

You haven't said what pressures you are using

 

Factory AP1 sized RE-01R

Cold pressures:
29-30 R
32 F

My experience with the RS2's is that they aren't that great and very fidgety with temp. I think we ran 36F 34R cold or even as low as 34/32 in 225/245 sizes with front bar.

 

Get a tire pyromoter or just use the chalk method. There is no one-size-fits-all answer.

 

I had Hankook RS2's on my Enkeis. From my experience, Higher pressures on street tires always seemed to work better for me. I had 225/45/17's, 245/40/17's and IIRC front tire pressure was 42 and rears were 40. I tried lowering the pressures, but it seemed to slide around alot more. Usually the surface temperature was pretty hot and most were hot days, some where in the 90+.

 

Last time I did an Auto-X, it was hot and I was running 35 psi all around.

In the cold, usually 30 - 32 psi.

Andre

 

When I ran the RE01Rs last year in the local Road Tire class, I used the same pressures as the S02s - 36f/32r. Worked pretty damn good...

 

Sorry I didn't mention they are R compound and I have been running them at 38/36....it seems like that is too high from the posts so far. Anyone else?

 

On my crappy Toyo T1Rs I run 33F/31R. AP1 wheels, 205/245. Also running Tein RAs. I forget what they're set at. 6 clicks from full-hard front & 10 clicks rear, I think. UK spec alignment.

Still a little loose, but much better than when I first put these tires on and was running much higher pressures, and equal settings on the Teins.

 

Larger front bar? Any other suspension mods?