Tires
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Below is a chart showing the "recommended" amount of lift needed for the tire size listed. It is possible to run bigger than recommended tires or wider wheels by shimming the front bumper and/or trimming the lower front air-dam. You could also always just put up with minor tire rub on the front inner wheel well when your wheels are turned to full lock. Recommended means that you will have full suspension travel with the list below, if you run larger than recommended, it is possible to damage tires and or sheet metal depending on suspension travel, wheel position and terrain.
No lift : 33x12.50 or 295/75R16
2 inch : 35x12.50 or 305/70R16
3 inch : 35x12.50 or 315/75R16
4 inch : 35x12.50 or 315/75R16
6 inch : 36x14.50
8 inch : 15x38
11 inch : 15x42
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Looks like 295/75R16 are the biggest you can go without the chance of rubbing. I know guys here who have run tires a notch or two larger and have reported no issues. I personally plan on going with 285's once my stock tires are worn out. Hope this hleps!
I just installed a set of Cooper Discoverer A/T tires P285-75R-16 on a 2003 Super Duty Crew Cab. The truck was brand new, no lift. Looked pretty good. Tires fit with no rubbing and filled the wheel wells a little better than the 265's. I think it would've looked better with a slightly larger tire. I usually sell twice as many Cooper tires as I do BFG's. I think the Cooper is a good all around tire. They're cheaper, good in snow, look good, and the mileage is also comparable with the BFG's.
Jimmie
2003 F250SD XLT SC SB 4X4



