I wanna get a set of 20 wheels for my 2012 f350 but am a little unsure of the offset to get, I was looking at the helo 835 with a 18mm positve offset. my truck is NOT lifted and have no intentions of doing so. I do have the factory fender flares and dont want a whole bunch of tire sticking past them. If you fellas would post some pics along with the tire size and rim info that would be awsome. thanks. :d