Aftermarket 18" wheels for an AT4

19AT4 · February 8, 2020

I'm buying new wheels next month, my current set up is a 2" RC level on Toyo MT 285/70's. I'm in the process of finding out which wheels will clear the brake calipers without the use of spacers, I'm in contact with custom offsets, fuel and hostile. I'm curious what 18" wheels you guys are running, I don't have much room between my mud flaps and inner fenders as it is. But I don't mind doing a little trimming, the goal is to run 18x9 -12 offset wheels. The only truck I could find in the custom offset's gallery is a 295/70 with a 18x9 -12 that rubs with minor mud flap trimming according to the owner.

Thanks as usual!

Supercup · February 9, 2020

I have 2019 GMC Sierra AT4 (crew cab 4WD) and put on Black 18” Method MR305 NV wheels and mounted my OEM 18" 275/65R18C Mud Terrain Goodyear^® Wrangler DuraTrac^® blackwall tires Mfg. Part #:MR30589060518 is the proper wheel in black for a 19+ GMC AT4.

I am running Ready Lift SST level kit (which includes larger block for the back), which can be bought via tire rack (best pricing).

19AT4 · February 9, 2020

15 hours ago, Supercup said:

I have 2019 GMC Sierra AT4 (crew cab 4WD) and put on Black 18” Method MR305 NV wheels and mounted my OEM 18" 275/65R18C Mud Terrain Goodyear^® Wrangler DuraTrac^® blackwall tires Mfg. Part #:MR30589060518 is the proper wheel in black for a 19+ GMC AT4.

I am running Ready Lift SST level kit (which includes larger block for the back), which can be bought via tire rack (best pricing).

Looks good! Do you plan on adding bigger tires? I was going to get that kit but they say the factory wheels won't work unless you add spacers to clear the new control arms.

Supercup · February 9, 2020

2 hours ago, 19AT4 said:

Looks good! Do you plan on adding bigger tires? I was going to get that kit but they say the factory wheels won't work unless you add spacers to clear the new control arms.

Kit worked with my factory wheels - here is photo of my 18" - not planning on adding bigger tires until these are done. Link below to video where they discuss their kit. should work with all factory wheels.