Jon’s post seems a little condescending towards anyone running 18’s, but maybe I’m a little biased. Here’s another thread regarding someone installing 18’s and a discussion regarding the wisdom of that type of setup: http://forums.hybridz.org/showthread.php?t=117965
A larger overall wheel diameter will “raise the car upâ€, but it will decrease the gap between the wheel and the fender by the same amount, so you don’t have to lower it down “really far†to get rid of this gap. I like exactly where my car sits and it has good suspension travel and handles pretty well to boot. I autocrossed my car with this setup and was very happy with the results.
I take issue with Jon’s last sentence, and think he’s really trying to disparage anyone running 18’s. If you don’t like them - don’t run them on your car, but I don’t think my car has the “slammed suspension but still high off the ground look†and I certainly didn’t slap them on or cut my springs.