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15x7 or 15x8

Old 05-26-2014, 02:26 AM
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Default 15x7 or 15x8

Alright, so I've tried to do a ton of home work to see if soft 8s will fit on my 95 4x4. Now, stock rims should be 15x7, but I'm seeing on here people suggesting 15x8. I've got 31's on my stock rims and they do rub on tight turns, so I should just stick to 15x7 because 15x8 would rub more because of a wider wheel, correct?
Old 05-26-2014, 08:51 AM
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A wider wheel is not going to make the tire automatically wider, however, it will likely change the center line of the tire a bit. An 8" rim with the same backspacing as factory will push the outside face of the rim out 1" over a factory 7" rim. This will probably center the tire 1/2" farther out. Not a huge amount over a factory rim.

When you're changing wheels what will make the major difference as to whether and where your tires rub is the backspacing (or offset). Factory S-series 4x4 rims have 6" of backspacing. Most aftermarket rims (as well as 2wd rims) have 4.5" backspacing or less. This is what pushes the rim farther out from the vehicle. So a 4.5" backspaced rim that is 7" wide will be 1.5" further out than a factory 7" rim, and if it's an 8" rim with 4.5" backspacing then it will be 2.5" farther out (1" wider + 1.5" less backspace).
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