I think one person has 285's, but 275's are generally thought of as the widest that fit for most--that's what I have, and they're quite tight in the back, even though we reshaped and modded the skirt handles and such.
Either way, if you go anything wider than stock, you pretty much have to mod the skirt handles & mounts. Pretty simple, and everyone does it their own way (some grind them down & cut, but we just carefully reformed the handles inward), and it all fits perfectly.
Here's my 275's, with the best rear views I could find (note, the bumper is now aligned & without a gap
And one from the front:
I had some of how we changed my skirt handles, but I can't find them right now.
These 275-50-17's are very tight towards the top versus the inner fender sheetmetal, but still with tiny enough gap--don't think I've had rubbing issues--just can't fit my fingers in there like I could with the stockers. And not sure how you'd go any wider, either, as these seem about as much so as you could pull off without serious mods.
[ 12-12-2006, 01:49 PM: Message edited by: caddyguy109 ]