265 35 18 front, and 285 35 18 rear for no rubbing, I was a tire/wheel tech for 7 years and thats what your supposed to run. you can get away with a 295 or 305 35 in the back but the front you gotta be careful. 255 35 18 if you can find em, but you got 9.5 inch wide wheels so you might be stuck with using a 265 or probably a 275 35 18 front and 295 35 18 rear. 305mm's in the back might rub
99 Z28 M6
Blk/Gry lea. SS clone, SS hood, 10 spoke 17's, R.S. gear built Tranzilla T-56, Hays clutch, SLP Flopac CAI, SLP Loudmouth, Bmr LCA's, UMI APHR, Anzo Halo's, Hurst Billit Short throw.
79 Z28 355/Th400
"1/4 mile at a time, thats just fine"
nitrous till it pukes