2020 Sierra AT4 1500 OEM Tires

[Northern4]

I am wanting to order the AT4 and trying to decide on the tire. I am trying to find out exact tire size( LT or P ), brand and name along with the diameter and width of the 3 available tires on the 2020 GMC Sierra AT4  1500. There are none on the lot near me.I can find the dimensions if I have the other info.  Thanks

[f8l vnm]

are you wanting the 20s and 18s ? different size . I would go with the 18s for more sidewall 

[Likarok]

3 hours ago, f8l vnm said:

are you wanting the 20s and 18s ? different size . I would go with the 18s for more sidewall 

Agree! If you like the look of taller sidewalls go 18".

[Cpl_Punishment]

Have you tried GM's website or the build and price tool?

[smrr1]

275/60/20 is the oem size on my at4. It is a Goodyear wrangler trailrumner at. P rated. While i wouldn't mind a little more aggressive i don't exactly need it either. I like the look of the 18 originally but drove both back to back and the 20 rode so much nicer.