Leveling kits??

[walnutz]

Hey new to the forum. Waiting for my 3500 AT4 to arrive and looking for advise on leveling kits and tire fitment. Does the AT4 sit higher? Would a 35x12.50x20 fit without leveling it? Always have levelled my super dutys due to the rake look driving me nuts. new to the GMC HD world so any input would be great as for good quality products and do's and dont's for these trucks. Thanks for any help!

 

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[LamboTexas]

2021 Sierra 1500 AT4:
Based on reading through other posts I narrowed my tire size to three options:
1.275/65R20
2.285/65R20
3. 295/60R20
Or
35x 11.5 R20 (maybe minor trimming?)

 

[Regular Cab Duallies]

Welcome! It appears going to 35s without a leveling kit shouldn't be a problem, although you might have to do some trimming as well as have the occasional slight rub. From what I found, you can get an AT4 HD with a 34" tire from the factory. I don't remember if or what lift an AT4 HD has from the factory, sorry.

Here is a video @Admin posted with a sweet rig (leveled) on 37's:

 

[Riverdog]

Do we know of a leveling kit that doesn't mess up the AWD?