I got my 15x7 rims today that I got from ebay and I measured the backingspace. I only had about 4 inch B.S. that's about +15mm offset right? Is this going to work? I put it on and the front lip of the rim is flush against the fender. It does not hit the struct I guess that's a good thing. Is is going to be okay to use these rims or should I sale these back. Anybody have an experience?