any off set in the 30's/40's is fine. a 15x7 +35 is a great wheel size all around. Its not a "hella flush" look nor are the rims sunken into the wheel wells. The lower the offset number to Zero than the more your wheels will be closer to sticking out past the fenders/quarters and will have rubbing issues if the proper suspension and camber dont come into play. hope this helps you!...what rim offset do I need to get.
I was gonna say Track R's at first glance..but I guess it's a case of "same shit, different pile" haha.Those are Konig Retrack's sir.