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Hello i have a 1994 f150 short bed 4x4 with the 5.0. I am going to be adding a rough country 2.5 inch lift and want to upgrade to bigger tires and get different rims. I want to run 33's is that possible without rubbing? I have no idea what tire sizes and rim sizes to look for. So far I think I need 33 12.5 r15 tires and 15x8 5x5.5 rims. Will this work ? What offset do I need on the rims? Is there anything else I should know before doing this ? Thank You !
You want your rims to be no more than 2" narrower than your tires. I've ran 31x12.50x15 on a 15x8 rim, but it looks pinched.
A 15x10 rim will look right with a 12.50 tire on it.
RC website, looks like it’s all listed right there. Make sure when shopping around for wheels you are measuring either backspacing or offset. They are using off set on their website. If it were me, I’d make a quick phone call to confirm my choice. Before you call, have an idea what type of terrain you’ll be travelling on to discuss tire sizes, widths, etc.
From their website:
32x11.50R15 15x8 5x5.5 -19 (off set). No trimming.
Many other tire / wheel combos listed under this, near the bottom of the page in the link.
Another good option is to run 33x10.5R15 tires. They're narrower so they don't require much effort to fit and you can retain factory wheels, something I'd advise if you've got the OEM alloy wheels. They're tough. Spacing out the front bumper 1/2" is usually all it takes to fit them, maybe a tiny rub on the radius arms but that's not always the case. You can then put the saved money into better shocks, or a leaf spring upgrade instead of using blocks.
What's the intended use for the truck?
If lots of dirt miles, a narrow wheel and wide tire is sometimes called a poor man's beadlock. When aired down you're less likely to lose the tire bead seal. But if planning for mostly road miles you'll burn the tire centers prematurely.
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