oem gmc wheel backspacing and offset?

[Fireguy63]

Ok. Not sure if I can get the answer here or find it in a different post. It I have a 2015 Gmc 1500 with 18" rims I'm looking to get a bigger tire on it I also have a motofab leveling kit for 3" in the front and 2" in back I'm told I can do 33' tires was looking at 33x12.5x18 do you guys know if these will fit and also what sizes have you guys used with out cutting or any rubbing I have stock 265x65x18 now. Also I'm thinking of getting after market rims I'm told to make sure the off set is same as factory does anyone know what that is so the rim Isn't hit when I turn

[Grumpy Tooch]

27MM for factory 20" and 24MM for 18" factory.

Can anyone confirm this? I found info that it is 33-50mm

[Rolling Thunder]

Can anyone confirm this? I found info that it is 33-50mm

 

Tooch,

 

This is correct:

 

27MM for factory OEM 20" and 24MM for 18" OEM factory.

 

My 20" chrome OEM are 27 offset, same as GMC..

[Grumpy Tooch]

 

Tooch,

 

This is correct:

 

27MM for factory OEM 20" and 24MM for 18" OEM factory.

 

My 20" chrome OEM are 27 offset, same as GMC..

 

https://www.wheel-size.com/size/gmc/sierra-2500/2016/

 

So..this is incorrect? what is your basis for the info??

[15_silverado]

 

https://www.wheel-size.com/size/gmc/sierra-2500/2016/

 

So..this is incorrect? what is your basis for the info??

He's saying...

+27 for the 1/2 ton Silverado 1500

Your link is for the 2500 HD

[newdude]

Can anyone confirm this? I found info that it is 33-50mm

 

Tooch, the HD wheels, all sizes (17-20") use a 44mm offset. The 27mm and 24mm are for the 1500 trucks.

[Grumpy Tooch]

Thanks guys, im sorry forgot to mention that...lol

[shortnugly]

2015 20" Denali wheels - these are 20x9? What is the offset & and backspace? Can't seem to get a definitive answer.

 

[Lgetz]

Short those wheels are actually 8.5 inches wide with a +44 offset. Backspace is just a bit under 6 inches.

[shortnugly]

Short those wheels are actually 8.5 inches wide with a +44 offset. Backspace is just a bit under 6 inches.

 

Great, thanks! Where did you find this info?

 

I did searches on this forum, Diesel place, Sierra Silverado but couldn't pin down anything.

[Lgetz]

Nearly bought a set for my old 11 2500HD but people were too proud of them price wise. Wound up ordering a set of Centerline Wilderness Grizzlys again in 20x8.5 with a +32 offset which was close to OE ones.(other choice was a +6 offset) Had these on a 05 2500HD as well they look way more distinctive compared to the OE wheels. If OE wheels had been priced like they are now would have settled for them.

[kimura97]

hey guys new to the forum, I didn't want to start a new thread seeing how this once sort of relates. I currently have a 2017 Silverado 2wd with a leveling kit on oem wheels. I plan purchasing the Fabtech 4 inch lift and will need new wheels to accommodate. the wheels backspacing suggested for 17x8.5 is 4.5-5 inch bs. Could I run 17x8.5 with 5 "bs wheels on my stock truck while I wait to save for the leveling kit?

[Lgetz]

You should be good with that wheel but depending on the tire size may rub UCA, sway bar or fender liners. 35 inch tires will not work on a 2 or 2.5 inch level kit without some rubbing.

[kimura97]

You should be good with that wheel but depending on the tire size may rub UCA, sway bar or fender liners. 35 inch tires will not work on a 2 or 2.5 inch level kit without some rubbing.

I plan on just running a 33 inch tire with the 2.5 and then the same with 4.5