Tire and Rim upgrade

DaBomb6988 · March 28, 2018

I have a 17' Silverado 2500HD Double Cab with the 17" stock wheels and 245/75 tires. I am going to be buying new wheels and tires. I also have a V-Plow. What is the biggest tire I can get without rubbing with the plow on? I don't know if I want to mess with the torsion bars much as it rides kinda stiff now. Will cranking them up about an 1'' make the ride any worse? I have the plow prep package. I am torn between 275/70R18 and 285/70R18 ridge grapplers. I want to stick with 18's so I have a little give in the tires. I've read probably ever tire thread on here lol. I'm really leaning toward the 275's but wanted to post to get some other input before I make a purchase. Pics of the 275/70's would be great! Thanks!

Landkrshr17 · March 29, 2018

285/75r18 Duratrac on stock 18" wheels, stock front, lowered rear shackles, absolutely no rubbing. I would think with the plow a little crank in the front should suffice.

DaBomb6988 · March 29, 2018

Your setup looks good! Thanks for the reply!

aseibel · March 29, 2018

I recommend installing Timbrens if you want to prevent front end sag with the plow. They reduce sag by about half on mine. I'm a fan. Even if I drive with the plow and no ballast, my truck is not nose diving. Granted, I'm running a half ton plow on a 1500, but I would think you would see similar results with your setup.

http://timbren.com/blog/products-page/gmfk25d/

DaBomb6988 · March 29, 2018

I’ve ran timbrens in my previous GM plow trucks. But the 2011+ don’t need them IMO. Both trucks I’ve had the truck only squats an inch when my v plow is raised. These trucks are much heavier duty than previous models.

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aseibel · March 29, 2018

I agree. Mine squatted 1" before timbrens, now only 1/2".

Just thought if you were worried about tire clearance, it may make a difference.

DaBomb6988 · March 29, 2018

Oh gotcha. I just worry about it riding “rougher” with timbrens. Not that it has a bad ride now I just wouldn’t want it any firmer.

sdeeter19555 · March 30, 2018

I had Timbrems in the front of my 2500hd, it rode like a buckboard...they got pulled out in less than 150 miles (for stockers) and are still sitting on the shelf four years later...

2012 2500hd 6.0l CCSB 4wd

DaBomb6988 · March 30, 2018

I’m not surprised. The way these trucks are built.

Big Whiskey · April 1, 2018

Are you buying a set of factory 18" wheels or aftermarket? The width and offset of your rims will make a difference in the largest tire you can run.

DaBomb6988 · April 1, 2018

I was looking at aftermarket wheels an +18 offset.

Big Whiskey · April 4, 2018

On 3/31/2018 at 8:52 PM, DaBomb6988 said:

I was looking at aftermarket wheels an +18 offset.

Roger that. 275/70/18 should fit without any trouble at all on a stock height truck, regardless of the brand/tread you choose. There's also a lot of options in that size, and many of them are fairly cheap (relatively speaking). If you're willing to raise the front end a bit, then 285/70/18 should fit. I was able to run my 285/75/17 (same size as the 285/70/18) on my factory wheels at stock height, and didn't rub. They might have rubbed with a plow on the front though. Hard to say. When I changed to my +18mm rims, I also raised the front end 1.5". My tires don't rub at all, but I think they would if I hadn't raised the front when I swapped the rims.

DaBomb6988 · April 7, 2018

Yeah I decided on the 275/70's I'm going to buy lowering shackles for the rear. I loaded my wheeler in the back for the first time since buying this truck. And the ramps are pretty steep with the truck stock. I think after adding taller tires it will be to steep.

redwngr · April 8, 2018

On 3/28/2018 at 7:42 PM, DaBomb6988 said:

I have a 17' Silverado 2500HD Double Cab with the 17" stock wheels and 245/75 tires. I am going to be buying new wheels and tires. I also have a V-Plow. What is the biggest tire I can get without rubbing with the plow on? I don't know if I want to mess with the torsion bars much as it rides kinda stiff now. Will cranking them up about an 1'' make the ride any worse? I have the plow prep package. I am torn between 275/70R18 and 285/70R18 ridge grapplers. I want to stick with 18's so I have a little give in the tires. I've read probably ever tire thread on here lol. I'm really leaning toward the 275's but wanted to post to get some other input before I make a purchase. Pics of the 275/70's would be great! Thanks!

One of the reasons GM uses torsion bars is so owners can compensate for the weight of the plow adjust ride height.

https://www.gmupfitter.com/files/media/photo/878/2018_LD_Snow_Plow_01_22-18.pdf

Skeld · April 23, 2018

On 4/8/2018 at 6:43 PM, redwngr said:

One of the reasons GM uses torsion bars is so owners can compensate for the weight of the plow adjust ride height.

https://www.gmupfitter.com/files/media/photo/878/2018_LD_Snow_Plow_01_22-18.pdf

Interesting. I was under the impression the front end of the 2500 and 3500 is the same, but this would lead me to believe I could carry 250 more pounds of plow with my CC 6.0 if I had bought a 3500 instead of a 2500. Wonder why?