Uncut with 7 1/2" rim with 4" Backspacing

[kaw550]

Would a 7 1/2" rim with 4" of backspacing work with a LUBR?

Will the width and backspacing cause issues? I would like to run a 33" tire which will complicate things even more.

I have a 2 1/2" lift and plan to add a 1" body lift and maybe set the rear axle back.

 

[Rustytruck]

I have never fit this combination but you might have to also roll the fender lip at the rear wheel well.

 

[DirtDonk]

A 7" with 4" is close with 10.50 tires, so a 33x10.50 on a 7.5 is going to be real close. Like Rustytruck said, you may need to tweak it a bit.
Don't see 7.5" wheels very often. What model are they?

Paul

 

[DirtDonk]

Forgot to ask, are these even 15's or are you going with a 16" or larger wheel and metric tires? If so, that could be another thing since you might be able to find a slightly narrower 33" tire and just miss the problems.

Paul

 

[reamer]

This would be a great "post it" a rim size / offset / tire size conversion calculator.
Something like will a 32 10.5 fit on a 8" rim and what would the actual "overall width be"...

 

[DirtDonk]

Great discussions would result for sure.
Luckily though, except in the most extreme cases, the width of the wheel does not change the overall width of the tire. Certainly not the tread width, but very little sidewall width change is noted within a 2 or 3 inch wheel width change.
The sidewall is just so flexible on modern tires that not much is translated to the overall width.

Next time you're next to a dismounted tire, grab the beads and pull them apart and push them together to see what the change is on that particular tire.
You might see a little bit, or none at all.

Paul

 

[Sam 15]

This would be a great "post it" a rim size / offset / tire size conversion calculator.
Something like will a 32 10.5 fit on a 8" rim and what would the actual "overall width be"...

I've used this calculator for some of my classic cars in the past.

http://www.rimsntires.com/specspro.jsp

Rick

 

[toddz69]

Would a 7 1/2" rim with 4" of backspacing work with a LUBR?

Will the width and backspacing cause issues? I would like to run a 33" tire which will complicate things even more.

I have a 2 1/2" lift and plan to add a 1" body lift and maybe set the rear axle back.

I *think* this would probably work OK. The 94-96 Alcoa Ford wheels have almost those specs (actually about 4.125" of backspacing) and you see those on a lot of uncut rigs/LUBRs.

Todd Z.