Notorious wrote:
Quote:

jsup wrote:
Is there any big difference between the 17 and 18 inch rims? As far as those tires are concerned?

I don't know if brakes will fit under my stock rims....

If I need new rims to clear the brakes, no point in buying tires to fit these rims. I'll just wait it out.

Overall, for straight ahead traction you'll be better off with 17" wheels, reason being that assuming you're maintaining close to stock tire circumference, you'll end up with a little more sidewall using 17s. Also there's a better selection of tires in 17" and they're significantly cheaper than 18s.
Although some factory 17" wheels have a clearance problem with C5 front brakes, as far as I know, you shouldn't have any problem with aftermarket wheels. In fact, although my '95 sawblades don't clear my ZO6 front brakes, once at an event I borrowed some race tires mounted on earlier Corvette 17" wheels that cleared the brakes fine.