I have Rival S's...245/40-18 & 335/30-18. BUT, they have seen street use only. After about 400 miles, I can say they do grip well. Maybe too well as I seem to be getting stone chips on the sides I didn't have before.
A little heat in the rears, and my 700 ft/lb BB will actually grip in 2nd gear if I roll into it.
Not much help you you racers, but my $.02.
Bill
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Bill
'69 Camaro / 534 BBC / DSE Built
'67 C10 / LS-3 w/Magnuson / Roadster Shop Chassis (SOLD)
'71 Blazer / LT4 / 8L90 / Roadster Shop Chassis / Ride Tech Air Susp.
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