Continental DW - track pressures ?
#1
Burning Brakes
Thread Starter
Continental DW - track pressures ?
I run a stock 1993 Z07 Corvette in HPDE. I am an intermediate driver, still running street tires. Tires are currently the limiting factor of the cars performance. Camber is set at neg 1.5 all around.
I have been running Kumho Excsta's, and found that optimum hot pressures for that tire on my car are 33 front, 31 rear. I generally start 5 psi lower on cold tires.
Those tires are shot now, and have been replaced with Continental Extreme Contact DW (275-40-17 all around). I have not yet been on track with these new tires.
For those of you with C4 experience and who have run these Contis, what hot pressures did you find optimum?
I have been running Kumho Excsta's, and found that optimum hot pressures for that tire on my car are 33 front, 31 rear. I generally start 5 psi lower on cold tires.
Those tires are shot now, and have been replaced with Continental Extreme Contact DW (275-40-17 all around). I have not yet been on track with these new tires.
For those of you with C4 experience and who have run these Contis, what hot pressures did you find optimum?
#3
Le Mans Master
#4
Burning Brakes
Thread Starter
Results
So I ran cold 28/26, hoping for hit 33/31. This based on the performance of my old previous Kumhos.
After the first run, I was surprised to find hot 40/36. I bled these down to 33/31. I could tell during the run that grip was being lost as pressure climbed.
After 2nd session, hot was 35/33. Again I bled to 33/31.
Third session had pretty constant grip, so I think I finally had the pressure properly adjusted. Unfortunately I negelected to check hot pressure afterward.
The Conti's handled well other than heating up more than I expected. Looks like they require a much lower cold pressure. Does that sound reasonable?
After the first run, I was surprised to find hot 40/36. I bled these down to 33/31. I could tell during the run that grip was being lost as pressure climbed.
After 2nd session, hot was 35/33. Again I bled to 33/31.
Third session had pretty constant grip, so I think I finally had the pressure properly adjusted. Unfortunately I negelected to check hot pressure afterward.
The Conti's handled well other than heating up more than I expected. Looks like they require a much lower cold pressure. Does that sound reasonable?