35s with 4 inch lift

[Mmoore031908]

Ok so right now I have an 85 k10 with 4 inches of lift on stock 15x8 rims with 35x12.50 15. I am fixing to swap in axles from a V(K)20 from 87 with 4.11 gears. I am looking at some black rock rims on summit racing and I am going to get the 16 inch equivalent of a 35x12.50 but will they still fit with the tires moved out about 1 3/4 inches?

The rims are 16x10 with -34mm offset. The stock 15x8 have -12mm offset.

 

[bucket]

It kinda depends on the springs, but it's doubtful they clear without rubbing. Some trimming will most likely be needed, or stick with an 8 inch wide wheel.

 

[Mmoore031908]

I know mine are like this but I didn't do it. Is it safe to do an 8 inch wheel with a 12.5 inch wide tire? Is there a write up on trimming on this site?

 

[Mmoore031908]

Also the stock k20 white wheels what are there back spacing?

 

[bucket]

A 12.5 tire on an 8 inch rim is perfectly fine, it's actually an ideal size. A stock 16 inch rim is only 6.5 or 6.75 inches wide, and you can squeeze a 12.5 tire on those too. Backspacing is probably around 3.5 inches.

There's not much to trimming, you just cut off what the tire tries to hit.

 

[Mmoore031908]

Are the k10 and k20 tracks the same? I'm looking to have my wheels stick out a little bit farther but the only rims that are reasonably priced have a backspace of 4.25 and 4.5 inches.