I have had these tires on two different Crossfires, an '04 coupe w/six speed and my SRT-6 that I have had for about six weeks now. The tires performed flawlessly on the N/A coupe. However, with the SRT-6 I have noticed that the rears don't hold as well as I would have hoped for. For the SRT-6, they seem to work fine for normal day-to-day driving (no noise, etc.). However, with spirited driving they do seem to slip quite a bit. This comes from driving on the Dragon and Moonshiners Run where the traction control light seemed to come on quite a bit due to slippage (even had Danimal on my butt on Moonshiners and couldn't shake him). I have noticed the same thing here at home on hard curves. The tires probably had 80-85% trend on them when I bought the car. Going forward, I would probably not recommend these tires for an SRT-6 if you plan on doing spirited driving with lots of curves (which most '6 owners will do I would assume ).

BTW, they are stock sized as well.