Tire Size

[WAS]

Hello, im new on here. I just bought a 2026 2500HD Trailboss. I did a 2" readylift front level. Wanted to do a 295/65/20 Nitto Trail Grappler on the factory wheel. Does anyone know if this will work without trimming or rubbing anywhere? Especially the upper control arms. Thank you!

 

[Bowtiefreak]

I know on a 1500 you would have to have a small spacer to keep it off the arms. It's ridiculous. You can get a Colorado Zr2 with stock 35s but you have to use spacers and trimming to get them on a full size Silverado.

 

[Stormin08]

I know on a 1500 you would have to have a small spacer to keep it off the arms. It's ridiculous. You can get a Colorado Zr2 with stock 35s but you have to use spacers and trimming to get them on a full size Silverado.

its all in the wheel offset....the ZR2 wheel probably has a different offset

 

[WAS]

I know on a 1500 you would have to have a small spacer to keep it off the arms. It's ridiculous. You can get a Colorado Zr2 with stock 35s but you have to use spacers and trimming to get them on a full size Silverado.

Thanks, I have a 2500 trailboss so i was checking to see the biggest tire i could run on the factory rim with a 2 inch level

 

[Bowtiefreak]

its all in the wheel offset....the ZR2 wheel probably has a different offset

Are you saying that I could get an aftermarket wheel with a different offset and fit 35s with no trimming, lifting or spacers? Well it better be one that has the entire tire outside the wheel well.

 

[Stormin08]

i wish i had better pics available,
the below 1st pic is a 10" wide wheel with -18 offset (slightly protruding from fender lip), the 2nd pic is a 9" wide with ZERO offset (sits flush with fender), both of which were running an advertised 35 x11.50

this same truck, currently runs a 9" with zero offset and 37 x 12.50 tire

the worst fitment was the -18 and a 11.5 wide tire...simply due to having a wider track width, wider swing radius when turning.
by pulling the wheel inward, the larger / wider tire, now clears the body....

ALL OF THIS WAS WITH THE SAME LIFT HEIGHT....

where the tire is placed is the key, you have some wiggle, but not a whole lot.

the further out (negative offset), typically the HIGHER the vehicle needs to go to clear
there is a good bit of info to take in to understand scrub radius, and how handling is effected. Tire Height alone can make drastic changes in turning response due to changing scrub radius

 

[Stormin08]

FYI,
you CAN get a 37" tire on a stock 2500, with a stock wheel....just have to know the tricks....

 

[WAS]

i wish i had better pics available,
the below 1st pic is a 10" wide wheel with -18 offset (slightly protruding from fender lip), the 2nd pic is a 9" wide with ZERO offset (sits flush with fender), both of which were running an advertised 35 x11.50

this same truck, currently runs a 9" with zero offset and 37 x 12.50 tire

the worst fitment was the -18 and a 11.5 wide tire...simply due to having a wider track width, wider swing radius when turning.
by pulling the wheel inward, the larger / wider tire, now clears the body....

ALL OF THIS WAS WITH THE SAME LIFT HEIGHT....

where the tire is placed is the key, you have some wiggle, but not a whole lot.

the further out (negative offset), typically the HIGHER the vehicle needs to go to clear
there is a good bit of info to take in to understand scrub radius, and how handling is effected. Tire Height alone can make drastic changes in turning response due to changing scrub radius
View attachment 24411
View attachment 24412

i wish i had better pics available,
the below 1st pic is a 10" wide wheel with -18 offset (slightly protruding from fender lip), the 2nd pic is a 9" wide with ZERO offset (sits flush with fender), both of which were running an advertised 35 x11.50

this same truck, currently runs a 9" with zero offset and 37 x 12.50 tire

the worst fitment was the -18 and a 11.5 wide tire...simply due to having a wider track width, wider swing radius when turning.
by pulling the wheel inward, the larger / wider tire, now clears the body....

ALL OF THIS WAS WITH THE SAME LIFT HEIGHT....

where the tire is placed is the key, you have some wiggle, but not a whole lot.

the further out (negative offset), typically the HIGHER the vehicle needs to go to clear
there is a good bit of info to take in to understand scrub radius, and how handling is effected. Tire Height alone can make drastic changes in turning response due to changing scrub radius
View attachment 24411
View attachment 24412

Thanks for all the information! I really appreciate it! So keeping the factory rims your pretty much screwed with a bigger tire because of the high positive offset I'm assuming?

 

[Stormin08]

i know the GMC 2500 will take a 37 x11.50 on a STOCK wheel with a 3" level

the Chevy usually does and appears top have a larger fender opening....i have not seen a chevy yet, but i have seen a few GMC's set up this way

THE KEY IS THE 11.50 WIDTH

 

[Stormin08]

Ridge Grappler | Hybrid Terrain Light Truck Tire | Nitto Tire

The Ridge Grappler features a revolutionary dynamic hybrid tread pattern and provides a quiet and comfortable with off-road performance capabilities.

www.nittotire.com

18" and 20" offers a 37 x 11.50

 

[WAS]

i know the GMC 2500 will take a 37 x11.50 on a STOCK wheel with a 3" level

the Chevy usually does and appears top have a larger fender opening....i have not seen a chevy yet, but i have seen a few GMC's set up this way

THE KEY IS THE 11.50 WIDTH

Thank you for the info. Is that with no rubbing or cutting?

 

[WAS]

i know the GMC 2500 will take a 37 x11.50 on a STOCK wheel with a 3" level

the Chevy usually does and appears top have a larger fender opening....i have not seen a chevy yet, but i have seen a few GMC's set up this way

THE KEY IS THE 11.50 WIDTH

Also on the factory rim?

 

[Stormin08]

the GMC's have mostly been AT4's...
Stock Wheels
Factory Mud Flap Deletes
Stock Suspension

knowing those sit higher from factory, a 2"-3" level is typically installed or standard suspension adjusted to that similar height


that is again....an 11.5" wide, 37" advertised height tire

 

[PistolsFiring]

Minute 16, shows the nitto’s he switched to in a 35x12.50 at stock ride height. I know, believe everything you see on the internet. Each truck and tire is different, some see slight rub, some don’t.

This is a gmc with the 37x11.50

 

[BossMoss]

I just recently checked in with the guys that installed my 3" Zone lift about upsizing to 37" tires. They confirmed mudflap delete kit and a front bumper spacer would be required to fit the 37x11.5 tires on my factory 20" wheels. They also said I would need to drop from 2" wheel spacers, down to 1 1/2" wheel spacers. I did not ask about running without wheel spacers all together. I like the wider stance and look with the current 2" spacers.

That doesn't answer your exact question, but figured I would share what I have, and what my shop is telling me I would need to go to 37's.