Actually with a 7" wide wheel you would need a 42-44mm offset wheel to be safe. My 15x7" Kosei K1s with 45mm offset was too high. The inner lip actually rubbed the rear upper control arms.
I had 15x7" Kosei TS with 38mm offset and it rubbed the outer fender lip. Right now I have 16x7" Rota C8s and they just miss the rear fender lip.
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