I'm running 215/40/17 on an 8" wide rim and no problem. I have hit hard bumps and everything and all wheels are still in perfect condition. I might be lucky though. I can lay it out and still have room to the fenders. The tires look kinda slim but they're good enough for me.
Alright I have 235/40's and I am just wondering how far I am gonna be from laying out......I'm not against cutting a window in my fender for the tire to clear, but would prefer not to since my WHOLE engine bay is painted the same color as my truck......you know show points matter big time to me.