BFG AT KO2

jkyle · November 16, 2015

Does anyone know what default size tires GM has for 275/XX/20?

DawgFish1 · November 16, 2015

Does anyone know what default size tires GM has for 275/XX/20?

55

jkyle · November 16, 2015

55

Any others? I want to go bigger and still get my speedometer fixed

DawgFish1 · November 16, 2015

I couldn't get my dealer to change mine at all...I had to get someone else to do it. Hopefully you won't have that problem.

jkyle · November 17, 2015

I couldn't get my dealer to change mine at all...I had to get someone else to do it. Hopefully you won't have that problem.

Mine said he would if it was a size tire standard on another GM truck...pricy but he would

WendysOrBust · November 17, 2015

I love the look of your truck! Are you just using the Bilstein 5100 adjustable front shocks to fit that wheel tire combo & what size and bs are the method wheels?

Yup, only suspension mods are the Bilstein 5100's. The wheels are 18x9 Method NV's with a +18 offset. Tires are 285/65r18 Ko2's. Zero rubbing and the setup works great for me since I drive a ton.

Edited November 17, 2015 by WendysOrBust

A.J. Curtis · November 17, 2015

Yup, only suspension mods are the Bilstein 5100's. The wheels are 18x9 Method NV's with a +18 offset. Tires are 285/65r18 Ko2's. Zero rubbing and the setup works great for me since I drive a ton.

Thank you so much for the info WendysOrBust! I ordered the Bilsteins the day after I got the truck and can not wait to install them and get some real rubber under there too!

bcbz71 · November 18, 2015

Yup, only suspension mods are the Bilstein 5100's. The wheels are 18x9 Method NV's with a +18 offset. Tires are 285/65r18 Ko2's. Zero rubbing and the setup works great for me since I drive a ton.

Were you able to put a tape measure on your 285s and let us know the actual mounted dimensions?

Big Whiskey · November 18, 2015

I was thinking about getting the 275/55/20 KO2's for my stock Sierra. Would you recommend the 65's instead? Wondering if there will be a big difference....

As stated, you won't be able to fit 275/65/20's without a level. That's a 34" tire. However, you should be able to squeeze 285/55/20's or 275/60/20's on the stock suspension.

Any others? I want to go bigger and still get my speedometer fixed

For 1500's with 20" rims, 275/55/20 is the only option. The 2500HD's with 20's come with 265/60/20's, but that's still only a 32.5" tire.

jkyle · November 19, 2015

As stated, you won't be able to fit 275/65/20's without a level. That's a 34" tire. However, you should be able to squeeze 285/55/20's or 275/60/20's on the stock suspension.

For 1500's with 20" rims, 275/55/20 is the only option. The 2500HD's with 20's come with 265/60/20's, but that's still only a 32.5" tire.

Could I put 275/60/20s on and have them program it for 265/60/20s and then my speedometer would only be 1% off?

sawyer_dowell_3 · November 19, 2015

im running 295/60/20 right now with rubbing at about 3/4 turn in reverse. would i be able to fit 285/65r20s since its taller but more narrow??

Big Whiskey · November 19, 2015

Could I put 275/60/20s on and have them program it for 265/60/20s and then my speedometer would only be 1% off?

Yes, I believe that would work!

KP 14 · November 20, 2015

Thank you!

LTeddy · November 22, 2015

First snow fall here in Michigan and these tires did phenomenal in the ice slush snow crap we just got!!

Sent from my SM-N910V using Tapatalk

GMMediumDutyMQ · November 22, 2015

First snow fall here in Michigan and these tires did phenomenal in the ice slush snow crap we just got!!

Funny -- we got socked with 14" of it here in Howell, and wasn't thrilled with the stock General 255/55 R17s (quel suprise, right?) when I made a run to pick up a snowblower belt this afternoon. Looking enviously at my wife's FJ with stock A-T KOs, so starting to research getting a set of KO2s for the Sierra...