Trying to decide which would be a better choice for a 235/40/18 Nitto N01, a 18x8.5 or 18x9 CCW wheel? Can anyone enlighten me as to the difference between running a 18x8.5 vs 18x9 front track wheel on a 996tt/GT2? Besides the obvious 1/2" difference in width, are there any performance advantages to the 9" wheel? I know with the 9" you can run a 255 or 265 tire but then you are just adding unsprung weight with a heavier tire and a heavier wheel compared to a 235 or 245 on a 8.5" wheel. I have all my understeer eliminated through aggressive camber setting and plan on running a 235/40/18 Nitto NT01 which according to Nittos website is ideal for an 8.5" wheel (same goes for a 245/40/18). My guess is a 235 NT01 would be a bit too stretched on a 9". Another issue could be brake clearance but that's not a player with CCW wheels which have plenty of room for the 6pots even with a 8.5". It seems that if a 9" wheel was better then Porsche would have been using it instead of an 8.5". Anyone wanna chime in?