Stick with the 16's! I'm amazed at how many people do the 17's considering the extra weight(and cost). Un-sprung weight is everything, especially when it's rotational mass. The tire selection in 16's really isn't too bad, yes you do have more in 17's but they are much more costly as well. I caught an awesome deal and got my Rota RB's 16x8 for $565 shipped w/ lug nuts. Plus they only weigh 16lb's each, and they should clear your brake setup.