Tire pressures for All Seasons

[Too Big Small Turbo?]

Ok I'm totally lost on what pressures I should run on these for the autoX tomorrow, sadly I'm running on all seasons. The tires are Bridgestone all seasons (P009 or something like that), the car is a BMW 325i weighing about 3200 with me in it. Let me know what you all think and thank you very much.

[Goku]

I used to run about 40 psi in the front and 32-36 in the rear depending on traction at said event. Typically street tires require more psi to keep them from flexing to much.

[mannix]

I'd start the day with the max on the sidewall on all four, work down from there. Look for rollover (actually works on street tires), but IME, street tire = high pressure.




Iain

[fast_eddie_72]

These guys certainly know more than me. But I will tell you, there is "too high". I did one event on all seasons- crappy all seasons. I ran 40 PSI and I might as well have been driving on ice. Just no grip at all. Less than I had at "normal" pressure. So Iain's advice is probably sound, start high, but work down if you need to.