15x8 inch rally w/4.25 backspace

[lazypineapple]

A 275 tire is 10.8" tread width that's pretty wide for an 8" wheel.
You should try to keep wheel width and tread width as close as possible.
Don't forget to factor tire bulge into your beer math too.
I bet a 275 is close to 13" wide sidewall to sidewall.
How wide is fender opening to bed wall?
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[buggy5872]

I ran 275-60-15 tires on 15x8 wheels for a few years on my 59 fleetside. They had 4" back spacing on a stock width rear. I did not have any issues.

[meter swinger]

I have 275/60/15 on the rear of mine, on a factory 4x4 (80's k10) rally wheel. Its a little snug in the rear. My bed is a fleet, which i believe is wider than a step
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[vjjack04]

Originally Posted by buggy5872

I ran 275-60-15 tires on 15x8 wheels for a few years on my 59 fleetside. They had 4" back spacing on a stock width rear. I did not have any issues.

Thanks. These are 4.25 but I think they will work....we'll see anyway.

[vjjack04]

Originally Posted by lazypineapple

A 275 tire is 10.8" tread width that's pretty wide for an 8" wheel.
You should try to keep wheel width and tread width as close as possible.
Don't forget to factor tire bulge into your beer math too.
I bet a 275 is close to 13" wide sidewall to sidewall.
How wide is fender opening to bed wall?
Posted via Mobile Device

Recommended rim width from BFG is 7.5 to 9.5; tread with is reported to be 9 inches with an overall section width of 11.1 (can depend on rim width)-all according to BFG site. My concern is not as much the tire as the rim....