If I was to run a 35x12.50 or 33X12.50 tire on a durmax dually will I need spacers for the rear wheels?? I was thinking that I would need 2in spacers but was wondering if it will hurt the towing capabilities.
You'll definately need spacers, and you still might have some issues with the tires rubbing on each other when you're loaded down.
I know it doesn't answer your question, but if you're worried about affecting the towing capability, you shouldn't be putting tires like that on it IMO.
I cannot stand the look of the factory durmax 4x4 with those small tires. I would like to run a little larger tire. I like the idea of running 33X12.50 tires that way I do not have to lift the truck, I think. The truck will be off road some and probably be pulling a goose-neck with a single car on it.
I would try and stay away from the spacers if at all possible, Are new wheels an option for you? Ones with a more appropriate backspacing? If they arent, it doesnt sound like the truck will be pulling too much weight, and spacers would probably be acceptable. My first choice would be new wheels however.
You can get taller tires without getting the width. On a dually, you need the taller aspect tires, don't remember the exact numbers or makers but they are available.
I have seen people run a 12.5" upfront and a 10.5" in the rear with duallys. Looked like a good idea to me, besides the fact you can't rotate tires. :doah:
It is common practice to not rotate DRW tires front to back. Side to side is ok on the front. Although this is a hotly debated topic, a few schools of thought exist on the topic. One reason people dont rotate DRW tires front to back is because only one side of their aluminum wheels are polished, so asthetically it would look wrong, obviously this doesnt apply to steel wheels. Another approach to this is that with 4 tires in the back, the tires wear together at a different rate then the fronts would alone. Constantly changing the 2 married tires in the back would cause one tire to do more work than another and would lead to faster tire wear. Most DRW owners that I know rotate their front tires side to side, and leave the backs alone. This is also how we did it at the tire place I worked at. Of course everyone has a different opinion on it. My F350 owners manual mentions only rotating the front tires on DRW trucks.
If new rims were to be used what back spacing would I need for a chevy durmax 4x4?? Also if 33x 10.50s were used in the back would they clear on the factory rims with no spacers?? Thanks for all the helpfull info to!!
Why not go with a 235/85/16 tire? That'll give you slightly more width and couple inches more height. That's what I ran on my 84 K30 dually & it looked great, with funtionality.
You would be better off with 19.5" wheels/tires. I think it looks good, and you have a wider range of tall, narrrow tires with higher weight ratings. and the tires would last forever.
My 19.5s, rims, tires, simulators were only 1300, probably not much more than putting 35s on that will wear out in 30k miles and my 19.5s will last much longer. You don't need to get custom rims since GM used 19.5s on stepvans for many years, just gotta find deals at the yard.
Gotcha, OK then. It would be a bit different for me, I'd have to find some off off a newer F450 to keep the hub piloted wheels, and I'd lose my pretty polished Alcoas. Something to look into though...
I like the idea of 10.5" rear/12.5" front but what tire, I don't want any bias mudder, would like a nice radial AT. Nitto's would be cool, they do make a 295/17, and a 265/17, but the 265 is only like 2500 lbs, I guess not that big an issue since there are 4. Maybe I would only need a 1" spacer?
There are many tires in the sizes you are looking for. You're not the first person to want bigger tires on a dually. Check out fwp.com or something, or call them up and ask what they usually do. Then call somewhere else to actually buy them. :doah:
