Right now I have 18x7.5 rims with 225/45/18 Falken FK-452 tires. I was looking at a couple of web sites for 18x8.5 rims to step up to. They say I can mount 225's on a 18x8.5 rim but in the 225's I have, it says DO NOT MOUNT IN 8.5 RIM. So that being said, is that just a warning as it is dangerous to do that or what? Anybody else done this? Thanks