Originally Posted by CivicSiRacer
Well when autocrossing you put alot more cornering forces on your tires - especially the front tires. When you run drag racing pressures and you corner you are going to roll onto the sidewalls, which is not good. If you turn hard enough you can separate the bead of the tire from the wheel
I'm running 40psi (front) on a 2100lbs Civic with Falken Azenis running 25psi is WAY TOO LOW. And to show you I run 40psi on my Hoosiers which are R tires. And both those tires have stiff sidewalls. For the rear I run about 35-38psi depending on how much rotation I want.
i completely agree... my answer 'yes' to his quote was about overinflation, not under. i would never agree with under.
i seem to be one of the few that run higher than normal.
some pressures:
-Accord with Hoosiers: 41 psi front, 37 rear
-Civic w/v710's: we took several temp readings across the tire and ended up running 36 front, 38 rear
-Civic w/azenis: 40 front/ 37 rear
-Friend's accord with suspension not optimized: i have him run 42 psi front/ 49 rear.
at 46 or 47, the pressure gets to the point where it loses traction. this helps rotation.
as far as 25psi.. i have not and probably never will go there.