I've got my car parked for the winter...but I would like to order a set of rims to replace my current ones.

Currently I have 15" rims, and I've got rubbing issues. I'm going to go with 14's.

My question is...

What is the minimum clearance from the wheel mounting surface to the closest obstruction on either front or rear wheels.

I'm trying to figure what is the maximum backspacing I can have on a set of rims.

I would measure this if my car were not in storage