I don't have time to keep up with big forums, I'm only active on a couple local ones. The wheels are just a set we had around from a Miata (the Aspire suspension gave us 4x100), had to do a bunch of work to get tire clearance, but we have good selection of cheap tires with the 15's now. Stock 14" Miata wheels with 185's were the best we could do before the fender flares. PM or email me and I can send you the base tune.