Originally Posted by Eurofordfan
In talking with a professional wheel / tire shop -- and the principal who I consider to be a pretty decent source of accurate info -- he said go out of your way to stay with the stock ET value. He had had direct experience, decreasing the ET value (i.e. decreasing the back-set) on his shop vehicle. It went from tracking really well, to a circumstance of very poor steering.
If that's the case, then short of having wheels custom-built, we aren't going to find anything in the aftermarket for our cars. The offset values on OEM wheels are at just about the highest numbers possible, but most aftermarket manufacturers seem to go no higher than 45 or so on 5x108 wheels.