Tire pressure's ?
 

I have a set of 18" TOYO RA1's on the car.

What tire pressure's are optimum? Certainly not the 36 psi front and 44 psi rears that the factory recomends!

That's pretty much what I run on the street-a little lower at the track (I shoot for 39 front, 47 rear HOT, which usually translates into something like 34/42 cold) . Why are you so sure the factory recommendations are wrong?

I usually run 32f/39r and it works for me.

Thanks guys. I am running 32 front and 38 rear (cold) . At higher pressures with the Stage 2 upgrade, did not feel like I was maximizing the grip levels when the RA1's warm up. Great tire for the price!!

I have Michelin Pilots and I run 32/38. The factory recommendation, at least for me in Los Angeles, is too harsh.

I'm at 34/38 after playing with various combinations. Works for me, but I'm talking street/highways in the Northeast. Where you have to contend with potholes and chewed up roads. :(