Mark J Bradakis asks
> Goodyear road race slicks. And it occurs to me I have no idea where to
start
> with tire pressures. These are 20 x 8 x 13 Goodyear cantilever slicks
from
> quite some time ago, on 6" rims. Any Spitfire racers out there with some
> hints on tire pressures? I should have my pyrometer on hand, so I will
try
> to get some temperature readings and adjust as necessary. Should I start
> with, say 25 psi in all tires? 40? 10?
>
We have been playing with pressures in our FP SCCA Spitfire, wt 1700#
welded rear. We are currently at 22 in the front 23.5 in the rear, cold,
with an air temp of about 95. We tried 23 F 24 R on the same day and they
looked like they were contacting only about 80% of the center. We have run
pressures about 18 F and 20 R but had lots of cupping and wave distortion
in the front tires. We run about 4 degrees camber in the rear and 1.5 in
the front.
|