Manufacturers dont use put the biggest rims possible, there are for 2 reasons mainly. As cars get heavier, the need for bigger, more powerful brakes becomes a need. As brake rotors grow, so do rim sizes. The other IS for asthetic purposes...srt-rex said:whats with the 19 inch wheels though. the car looks great but who needs 19's, if i buy one i'd ditch them for some wide 16's or maybe 17's at the largest.