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Hard question to answer, I base all of my pressures off of hot pressures., I start around 20 psi cold and sort of work backwards when they are hot. For Hoosiers you are looking at 32 psi hothoosier 305 645 18 s80 or s100 what cold pressure did you start with on kohr cars.i know not air but nitrogen was used.
I know the radial tire really don't heat up like bias ply I used on my old boss 302 we use start 23 psi.
The radial 28 or higher depending on temp.
Chris
They cool down right away, so you need to come in a lap early to avoid the traffic and grab them on pit row.Ok here another coming off track how long does hot tire pressure stay before cooling off. Thanks chris
You would not believe some of the pressures I have sent cars out on, so low that I won't post them because I don't want anyone knocking the tires off the bead on the outlapWow, interesting to know as I have never started that low cold ever, so something new to try Mr. Tire Guru of the Swamp!
Come on blacksheep that extra water in the rim gives bill added advantage . Acts like flywheel counter weight helps him go faster in straights.Go buy some cheap air/water separators from Lowes or Home Depot, put them in line, and drain the compressor before you fill the tires.