I have a 2005 F350, stock 18" rims w/ a 1" inch lift and a leveling kit. Right now I have 275/70/18's on it and there's PLENTY of room in the wheel wells.

I'm looking into possibly buying some 285/75/18's to put on it and wanted to know if they'll fit w/o rubbing while turning. If so, can I go any bigger? 305/65/18's?

Would love it if someone w/ a lot more experience than I have with this could give me some help. Thanks guys.

 

I run 295/70R18s on stock wheels at stock height with plenty of clearance. The 285/70R18s will fit just fine, the 305s probably will too. Turn to full lock and see how much space you have before rubbing on anything, and if you have about two inches before the closest rubbing point now the bigger tires should fit fine (I'm assuming 4wd here).

 

Yup 4X4.. Thanks for the reply :-)