Will these fit in 255/35ZR18 on a 18x8.5" rear wheel? Car is currently running PZero 245/35s with no probs. I know actual dimensions differ between manufacturers, so just wanted your opinion. Tried 235/40s, but they rubbed all day long and then some. PZeros don't last too long and they aren't exactly cheap....only ones I found that made a 245/35R18. Car is 96 M3 with stock suspension.