Dually tires....how close is too close?

[t500hps]

Dually tires....how close is too close?


I'm looking at larger tires and trying to avoid large spacers? Based on my calculations the new tires would be 1/4in apart at the bottom where the tire bulges out near the ground.....with a load it may get even closer.....and this is with a 1/2 spacer but that would leave the lug-nuts flush with the end of the studs and 1/8 from the last threads (the threads stop short of the end of the bolts)

The other option is 2in spacers that have additional bolts for the outer tire to bolt to. These would leave the tire sticking outside the wheel well 2.5 inches and I'm hoping to avoid that.

 

[Expensive Date]

1/4 is too close they will rub going around corners and any time you hit a bump.

 

[MattBMiller]

Usually a half inch or so, but on the other hand, I've seen tow trucks with oversized dually tires that rub almost all the time that have never had a blow out. Personally I'd shoot for a half inch or so.

 

[t500hps]

My options are the 1/2 spacer with a .25 to .5in space at the bottom (more at the top)........or adding a 2in spacer which has a 2.25 to 2.5 gap between the tires at the bottom.

 

[YoungPerformance]

I was told a minimum of 3/4" between the tires to be able to load the truck to capacity. You could run less if you don't, or ever plan to, run a full load. If they touch they will generate so much heat that it could cause a tire failure.
I used a company out in CA. quite a few years ago that can cut, add 1", and weld back steel wheels. I had it done on a set of Dodge factory steel wheels. We put some Remington mud brute tires on it that would have just touched each other with the stock wheels. I sent them the wheels and they cut them about 1 1/2"from the flange. They added in 1" of material and welded it all back together. They did an excellent job and it drive like new. I put over 200K miles on the truck after that with no problems. If you want, I can try to find there name.
Eddie

 

[DAREDEVIL]

They actually make 1 inch spacers with studs on 1 side !!!!
I would shoot for that and 1/2 on the bottom is fine @ 80 PSI !

 

[t500hps]

They actually make 1 inch spacers with studs on 1 side !!!!
I would shoot for that and 1/2 on the bottom is fine @ 80 PSI !

I found 1.5in spacers but the factory studs would stick out past the end of the spacer, and they recommend cutting the studs shorter o) .....I'm not doing that!!