This is for you guys that do autocross and road racing on street-legal tires. What pressure do you run?
I am about to finish off my stock Goodyears and replace them with Nitto 555's (not DR's). I'm sticking with stock size and Bullitt wheels. I currently have stock suspension and brakes that needs upgrading badly to keep up with the stinking WRXs and RX-8s.
Do you run them slightly lower pressure than street for better grip or keep the pressure a little high to help with sidewall stiffness?
I'm doing a high-speed touring series here at Hallett in Oklahoma. Track is 1.8 miles, 10 turns, extremely technical. My max speed on the front straightaway is ~95. The rest is left/right/brake with several short straights into tight hairpins that really make the tires squeal. The series is basically a practice session- no passing in corners, spin too many times and your're out, etc... It's really to have fun, learn how to drive and see if we want to go further.
I noticed after my first four sessions on Saturday that overall my tread was in pretty good shape, despite already having 30K miles on them. However, the very outside edges had taken quite a bit of wear, much more than before Saturday. I was running 30-32# of pressure and it looked like the tires were rolling over too much in hard cornering.
I noticed one very fast Cobra running Goodyear F1 GS-D3s. I have decided on Nittos mostly for cost reasons.
Any suggestions on pressures, especially on Nittos?
I am about to finish off my stock Goodyears and replace them with Nitto 555's (not DR's). I'm sticking with stock size and Bullitt wheels. I currently have stock suspension and brakes that needs upgrading badly to keep up with the stinking WRXs and RX-8s.
Do you run them slightly lower pressure than street for better grip or keep the pressure a little high to help with sidewall stiffness?
I'm doing a high-speed touring series here at Hallett in Oklahoma. Track is 1.8 miles, 10 turns, extremely technical. My max speed on the front straightaway is ~95. The rest is left/right/brake with several short straights into tight hairpins that really make the tires squeal. The series is basically a practice session- no passing in corners, spin too many times and your're out, etc... It's really to have fun, learn how to drive and see if we want to go further.
I noticed after my first four sessions on Saturday that overall my tread was in pretty good shape, despite already having 30K miles on them. However, the very outside edges had taken quite a bit of wear, much more than before Saturday. I was running 30-32# of pressure and it looked like the tires were rolling over too much in hard cornering.
I noticed one very fast Cobra running Goodyear F1 GS-D3s. I have decided on Nittos mostly for cost reasons.
Any suggestions on pressures, especially on Nittos?