20 inch rim on 35X13.50

Sobehall · 02-09-2010, 09:54 PM

I've seen many older threads on this question but no definite answers on what needs to be done, it's possible because I've seen guys on here with 35X13.50 on 20's ... I guess the real question is, how wide should the rim be, which backspacing should be used, and is the PWM the only mod that needs to be done?

Thanks ... I think this will look great on the truck if I can just get it figured out without having to dish out money on parts that aren't needed or won't fit ...

EDIT: I'm running the Stage 1 ProComp 6" lift, but to me looks more like 8" ...

NorCal 4x4 · 02-09-2010, 11:16 PM

Quote:

Originally Posted by Sobehall

I've seen many older threads on this question but no definite answers on what needs to be done, it's possible because I've seen guys on here with 35X13.50 on 20's ... I guess the real question is, how wide should the rim be, which backspacing should be used, and is the PWM the only mod that needs to be done?

Thanks ... I think this will look great on the truck if I can just get it figured out without having to dish out money on parts that aren't needed or won't fit ...

EDIT: I'm running the Stage 1 ProComp 6" lift, but to me looks more like 8" ...

OEM rims with a 35" tire will clear with a Pro Comp spindle. OEM backspacing on 8" width rims is about 5.5". Most spec sheets say the minimum for a 325 or a 13 to 13.5" tire should be a 9".

Wider rims and/or smaller backspacing means more cutting at the pinch weld, and sometimes even at the front of the wheel wells/bumper. A 9" rim with the same 5.5" backspacing as stock, will be better than a 9" with 4.5" backspacing, because you will likely have to trim even with your PC lift. But a 9" width, with same as stock 5.5" backspacing, probably not, and if on stock 8" rims no trimming.

Sobehall · 02-10-2010, 12:40 AM

Yeah so I checked back on the pic I saw of the truck with 20's and the 35X13.50 tires and it has an 8" lift ... I guess when I get back home I will just take it to a shop and have them try and figure out what will fit ... keeping the PWM in mind of course ...

EDIT: Does anyone know if the PWM voids warranty in any way?