BFG AT KO2

tyrich88 · January 13, 2016

I was just looking at tire rack and it seems the 275/60 is 15lbs more than the stock LS2s, and the 275/65 is 17lbs more (2lbs more than 275/60). I would have expected it to weigh more than that. I wonder if there is a bigger MPG hit going 275/65 vs 275/60. If anything, the bigger diameter would probably be the culprit of worse MPG.

The only reason it would be any worse would be because of the speedometer difference. Which if you recalibrate with a tuner, it shouldn't hurt it much at all. And with the right tune, probably even get you better mileage.

reds10406 · January 13, 2016

I couldn't take the useless Goodyear SRA's anymore so I went with 275/65/R18 since these are only used in the winter and I would like to get the best MPG I can. Night and day difference.

Summer Set up

Edited January 13, 2016 by reds10406

mmwest · January 13, 2016

I have 275/65/20's on a 2015 All Terrain with a 2.5" level.................this baby feels like a caddy. I little too sluggish (need a tuner) compared to my EcoBoost but man is it smooth. This is my first set of KO2's ( others were KO's) and that's all I'll ever put on my trucks.

jrob56 · January 14, 2016

I couldn't take the useless Goodyear SRA's anymore so I went with 275/65/R18 since these are only used in the winter and I would like to get the best MPG I can. Night and day difference.

Summer Set up

What wheels are those?

jrob56 · January 14, 2016

275/65r20 - RC 2 inch leveling kit. Very slight rubbing, only at full lock in reverse.

Untitled by Dustin Wince, on Flickr

Untitled by Dustin Wince, on Flickr

What wheels are these, beautiful truck!

reds10406 · January 14, 2016

What wheels are those?

GM Accessory CK795

Steeks · January 14, 2016

I have 275/65/20's on a 2015 All Terrain with a 2.5" level.................this baby feels like a caddy. I little too sluggish (need a tuner) compared to my EcoBoost but man is it smooth. This is my first set of KO2's ( others were KO's) and that's all I'll ever put on my trucks.

Do you have any other pics? Looking at this set up myself. Do you have the 5.3 or 6.2?

mmwest · January 14, 2016

Do you have any other pics? Looking at this set up myself. Do you have the 5.3 or 6.2?

I have the 5.3 w/ 2.5" RC level and rear stock block. I didn't get before and after measurements but my truck still has a 3/4"-1" rake and that's pretty much where I wanted it. The suspensions on the All Terrains area little different from others and you may not get the exact results as I did if your dealing with other than an AT. Here's the only pictures I have.

Travis Whitmore · January 15, 2016

That's weird as my 2015 All Terrain crew 4x4 with a 2" level sits 3/4" higher in the rear.

IceOnly · January 15, 2016

I have 275/65/20's on a 2015 All Terrain with a 2.5" level.................this baby feels like a caddy. I little too sluggish (need a tuner) compared to my EcoBoost but man is it smooth. This is my first set of KO2's ( others were KO's) and that's all I'll ever put on my trucks.

What tire pressure r u running? I have the exact setup but the tires stiffened the ride a bit.

mmwest · January 15, 2016

Running at 38psi

I came out of a Ford EcoBoost with Bilstein 5100's on top height and the same tires. This runs a lot smoother.

Edited January 15, 2016 by mmwest

Red_5 · February 2, 2016

I just picked up some take-off 18" OEM wheels and put some 275 65 18 KO2s on as my snow and towing wheels/tires. The tires are pretty quiet on the freeway but are noticeably louder than the Eagle LS-2s that came on the truck when there's less wind noise. I just got home but I'm certainly pleased.

SlavO · February 2, 2016

So far 50,000 miles love this tire... will be getting new ones next November. So I'm sure they will have 80,000 + on them. 275/60/20

Silverado-Hareek · February 6, 2016

I just picked up some take-off 18" OEM wheels and put some 275 65 18 KO2s on as my snow and towing wheels/tires. The tires are pretty quiet on the freeway but are noticeably louder than the Eagle LS-2s that came on the truck when there's less wind noise. I just got home but I'm certainly pleased.

And those are load range E tires correct? Not D which is standard for these trucks. How does that affect the ride quality or your mpg's? I hate that the only 18" rim versions of these tires are load range E.

I wish I had a non z71 with 17" rims. The money saved on the truck could have gone to immediate upgrades at shocks, metal skid plates, and better quality tires.

Sent from my iPhone using Tapatalk

Red_5 · February 6, 2016

And those are load range E tires correct? Not D which is standard for these trucks. How does that affect the ride quality or your mpg's? I hate that the only 18" rim versions of these tires are load range E.

I wish I had a non z71 with 17" rims. The money saved on the truck could have gone to immediate upgrades at shocks, metal skid plates, and better quality tires.

Sent from my iPhone using Tapatalk

Yes, these are E load range and you definitely know they're on there. I feel like everything about the truck movement seems a little lazy from acceleration to suspension movement. It's not bad nor do the tires make the truck ride uncomfortable, just different. I've only driven maybe a 100 miles since they were installed so I can't say much about fuel economy. We're heading to the mountains next weekend which will be the first trip we will take in this truck.