Hey gary,
i am running a 225/40/18, the road was not patchy at all as it was raining, and im running the 32psi you recommend for the street.
I must admit that half the time its ok, just some of the time it tramps a fair bit.
I was trying a few different things , ie slipping or dumping the clutch at different revs, changin to second at different revs and throttle % and i could sort or drive around it but i was a little suprised because it is so perfect in the dry
Thanks SK
Edit: SK you were right, tyre pressures were at 26-27spi, Whoops