Max size for Miata Wheels?

Hi Folks, I have a question that I cannot find an answer for. What is the largest diameter rim I can fit on my 2001 5 speed Miata? I'm starting to put the wheels in motion pertaining to getting new ones (the factory wheels are really weak) and I would appreciate it if someone could help. Also, if you have any good links where i can find them, it would be great. Thanks!!! James Gentile

I would say 18's, but you'll probably end up with some rubbing, especially if you have any type of lowering springs added. Here's a pic of a 2001 with 18" SSR Competition wheels: http://images.cardomain.com/installs/194000-194999/194176_1 7_full.jpg Just keep in mind that turn-in will be faster, but your ride will probably become pretty harsh with the shorter sidewall.