Quote:
Originally Posted by strat61caster
fwiw chatted with an old friend today who crews/tire tech for some sports car racing (they'll fly him out to Sebring, Daytona, etc) and it's not uncommon for those cars to be sent out at like 22 psi and the drivers are supposed to keep off the curbs for a few laps until they get heat in them. Said they'll go as low as 18 psi, targeting 26-28 psi hot. Didn't poke too much as to what tires or such, real racecars have different problems than street cars at grassroots stuff, but thought it was interesting.
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What cars, what tires matters, of course. FWIW Hoosier recommends running higher pressure at Daytona, 40-42psi+ hot for A7 and R7 DOT radials:
https://www.hoosiertire.com/news/art...ecommendations.
Same bulletin recommends as low as 30psi hot for dedicated non-DOT racing slicks, so what tires matters *A LOT*!
What pro race teams run for pressures on well set-up lightweight purpose-built race cars on big wide racing slicks has pretty much nothing to do with us...
In relation to this thread, if you aren't a professional who knows exactly what the ramifications are, I wouldn't go out on track with 18psi! I don't go out with less than 26psi COLD. Sometimes 24psi COLD in the tire 1st morning session for the tire that sees the most pressure rise.