I just received my wheels from American Muscle. When I put the rear wheels on my mustang the wheels stuck outside the fender like a 4x4 truck. The wheels were Niche Targa 20x8.5/20x10 and the rear tire was a 305/35/20. I spoke with American Muscle they are taking the wheels back and giving me a full refund. The rear wheels had a +40 offset, I was just wondering what offset is needed to run a 305 tire without them sticking outside of the fender. Thanks in advance.