Re: Suspension upgrade with 15" Wheels? (jiggyjames79)
Not only wil it be OK it will still be better than it was before. The steelies are plenty strong and reasonably light. They just aren't very cool.
Many people use stock steel wheels in autocross and to good effect. Your 15" with tires are lighter than most 17" alloy wheels with tires. Thats not to say there aren't some light ones out there, but $$$$$$!
If you are looking for ultimate track handling buy a set of low profile performance tires that will fit your 15" rims. This gives you the benefits of a shorter sidewall and a MUCH lighter wheel set-up and smaller rolling diameter for better acceleration.
Get "pretty" wheels for the street where you don't care so much about the last fractions of a second.