For a 15x7 wheel with a 205/50/15 tire, is an offset of 40mm ok? I seem to remember that 38mm was optimal. Just curious about the 40mm offset because of the wheel I've finally chosen. Axis Mag-lites Graphite Toyo T1-S (205/50/15) '91 Classic with stock suspension I really hope it's a good fit... I'm tired of changing my mind. Thanks for your time and your help, Mark