I have a 2003 Infiniti G35 sedan with stock 17" wheels n tires, I was recently given a set of Lexani wheels with a 5x120 bolt pattern, 20x8.5 in the front and 20x10 in the rear, i spoke to a shop on the phone and the said i could drill the wheels and they will fit, but my question is will the rear tires fit? being that they are 10 inches wide. also the offset i was told is the ET number on the back of the wheel, the lexanis say ET15 What does that mean?

any help would be appreciated.

10" wheels in the back are fine. The issue is going to be the 5x120 bolt pattern which will need spacers to change the pattern.....then you have to be concerned with the offsets.