A few wheel questions (Offset, Spacers, etc.)

[z31maniac]

225 max, 140 min treadwear, Pirelli PZero Corsa not allowed.

What tires meet these specs and are head and heels above RT615s?

On a 7.5" wheel.

STX takes you to 8" wheel, 245 max.

[SpeedTheory]

Looks like Toyo's R1R is my option..

225/45/15 on a 15x7 or 225/45/16 on a 16x7.5...hmm...

[Mystikal]

Wait until the section/tread width numbers are out. For example if you look at the R-S2 225/45/15 specs, it's narrower than a 205/50/15 RT-615, while the 225/50/15 is a real 225.

Jay