My car has a set of Bridgestone Potenzas (not sure which of the many submodels). The tires are past 20,000 miles and are looking a little worn, particularly in the front. As soon as Z1 releases its new camber adjusting arms, I want to get a set and replace the tires. In looking at several options I have noticed some manufactureres do not offer the 35% sidewall height in 275mm width. If I were to go with 40%, should I anticipate any rubbing problems? The rims are SSR GT-1s but I do not know the offsets. Rims were in the car when I got it. The 245/40/18 - 275/35/18 set on there now fit were well although the sidewall of te rears looks a little anemic.