I hate the look of 255's on my back end and want something more aggressive. Sizes I'm looking at are: 275/40/17 sumitomo, nittos) 285/40/17 (nittos) or possible a 315/35/17 (sumitomo, nitto). Trying to study up on these two manufactures, most people say they run very narrow which has me concerned with running a 275 or 285 and considering moving all the way up to a 315. will a 315 tire hurt my performance at all? My car currently does not need anywhere near that tire size, I just want a fat ass more than anything. Once my top end is built sure I could benefit from a 315, even then I think it would still be overkill. opinions? Or can people post pics of their 275/285/315 sumitomo & nittos thanks! edit- I see Mickey Thompson makes a street radial in a 295/45/17 which is extremely appealing to me, larger tire but I've got the room and will allow me to keep my 255/50/17 for the fronts.