305/70-16's on stock K20?

[Stepperado]

Will BF Goodrich 305/70-16's fit on a dead stock K20 4wd?

I know they are only about 1" larger in diameter. Not sure how much wider. My concern would be rubbing in the front.

Anybody try them?

 

[bucket]

On your stock rims, yeah they should fit without trouble. With hard offroad use, there could be some contact with the fenders.

 

[Green79Scottsdale]

By the math, 305's are 12" wide. (305mm divided by 25.4 to get 12.008 inches.)

I was curious what people would say too. That is the size I am tentatively looking at, but I would need to get wider wheels.

If the clearance is too close, you could always do a 1" body lift, or run some Zero-rates for an extra 1". Or both for 2".

 

[bucket]

A while back I had that really rusty '90 K20 (sorry... V2500, lol) Burb and it had 33x12.5x16.5's on it, with 8 inch wide steel rims. For normal driving there was never any rubbing. I actually put it through it's paces out back a couple times too, and it didn't seem to rub during that hard use. Or I just didn't hear it because there were so many other noises (not just the truck, but a bunch of yelling and screaming drunk passengers).

 

[bucket]

Also, if hard offroad use will happen, lifting it won't help with tire clearance unless the bump stops are changed.

 

[bigcountry78]

Something else to think about, I ran 33/12.50 on 8 inch rallys on my 78 with no problems, but the same setup on my cousins 84 rubbed the steering arm enough to tear the grease boot off of it. Just something else to think about. Same type of rims in both applications, and the same bfg mud terrains. Tooke them off of his truck and put them on mine. I'm assuming your running stock rims so that why I brought this up.

 

[Rusty Nail]

LoL! ∆∆∆
Just lift it bro, it'll be fine!