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Tire size suggestions and pics on AT4/Trail Boss

mattsvtcobra
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Drew03Z
Drew03Z

Well, I’ve been trolling several threads here and finally got her done. Took delivery of a Pacific Blue AT4, 6.2L, with 18s, intake/exhaust. I initially wanted to go with BFG 35/12.5/18 (34.5 inc

MTBeerz
MTBeerz

35x11.50r18 Toyo Open Country AT II Rough Country 1.5" level kit was necessary but no rubbing whatsoever.

FLDrJoe
FLDrJoe

Just put Nitto Grappler G2s on my 2019 Sierra SLT this weekend 285/65/20 on factory rims to replace the original 275/60/20.  Really fills up wheelwell better as it is 1.6 inch more in diameter.  Reall

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z1boss Enthusiast

z1boss

Posted
Posted
15 hours ago, HopHedd said:

They're are some good reviews on both the AT and the MT.

 

https://www.offroadxtreme.com/engine-tech/wheels-tires/tire-review-mickey-thompson-deegan-38-all-terrain

I have the Mickey Thompson MTZ.  Best tire I have ever owned.  My current set has about 37k miles on the tires and they still look like almost new and have about 14-15/32 of tread left

  • 3 weeks later...
TripleBGM Enthusiast

TripleBGM

Posted
Posted (edited)

I hate the druatrac tires.  Anyone running the 285/60/20 ko2s on the AT4 all stock?  I think I'm going to get the OE 20s.

Edited by TripleBGM
  • 2 months later...
Rosshog Enthusiast

Rosshog

Posted
Posted
On 4/10/2019 at 7:36 PM, FLDrJoe said:

Very rare rub noted on passenger side fender inside of lower molded flap on sharp right turn only when going up a slight curb or bump. Otherwise no issues 

Did you happen to have these tires mounted before you put on the RC leveling kit?  I have a bone stock AT4 without a leveling kit, so I'm wondering if 285/65/20 will work.  TIA.

FLDrJoe Enthusiast

FLDrJoe

Posted
Posted

Did GM Accessories lift at delivery to make it the equivalent of an AT4 then did the front leveling and ran the stock 275/60/20 for a little while before going to the 285/65/20.  I know lots of people running the 285/65/20 on TrailBoss and AT4s on factory rims with no problems actually think they may get a little less rub

mattsvtcobra Enthusiast

mattsvtcobra

Posted
  • Author
Posted
On 4/9/2019 at 12:15 PM, BringTheRain403 said:

Does anyone know if the 295/55R20 Nitto Ridge Grapplers will fit without any modifications on a stock AT4 with stock wheels.

Sent from my Pixel 2 XL using Tapatalk
 

Has anyone done this yet? Pics would be awesome.

killramos Enthusiast

killramos

Posted
Posted

Didn’t read all 5 pages, and this might all sound pretty cute compared to the 35+ many and running in here but...

 

Has anyone else noticed that the off road performance package duratracs are actually smaller than the stock AT4 tires?

 

33’s stock and 32’s on the off road pack... frustrating.

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  • 5 weeks later...
  • 11 months later...
ScX31 Enthusiast

ScX31

Posted
Posted (edited)
On 9/9/2019 at 4:48 PM, Rosshog said:

Did you happen to have these tires mounted before you put on the RC leveling kit?  I have a bone stock AT4 without a leveling kit, so I'm wondering if 285/65/20 will work.  TIA.

I’ll save you some trouble. I put this size on my Sierra with a 2” level and could hardly turn without major running. I ended up heavily modding the fender wells and made them fit  but it was a pain. I’d go 286/60/20 on a stock AT4

 

 

3BC9EF68-D63E-42C1-B9D0-2FD22505FF8B.jpeg

Edited by ScX31
  • Like 1
  • 2 years later...
Josh021 Enthusiast

Josh021

Posted
Posted

Running 275\65r20 stock rims 2" spacers. I installed the factory at4 lift along with the readylify 2" sst. Just ordered 17" pro comp wheels with 4.5" backset. with 35x12.50x17 nemon power xt husky liners and and fox shocks and a back rack. Cant wait to see how it turns out. Here's a few pics of it as of now. Lost a visor in a windstorm 120 km and hour max windspeed.

IMG_20230208_113139_312.jpg

IMG_20230208_113139_271.jpg

IMG_20230202_082936.jpg

IMG_20230208_113139_233.jpg

Transient Senior Enthusiast

Transient

Posted
Posted

Thoughts on 285/75r18 on stock Trail Boss?  Rubbing, etc??  That's pretty close to a 35, and not much wider than the OE Duratracs.

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