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My truck is a 2013 FX4, EcoBoost, 3.55 gears, Auto Spring 1.5" leveling kit, factory mud flaps and the stock 20" wheels. I am looking at buying the new All-Terrains but I am not sure what size to go with (I am torn between going with the 275/60 R20 or 275/65 R20). I would like to go with the 275/65 R20 but I am concerned about rubbing (possibly on the mud flaps) and I have heard some people saying they lost about 1 MPG. I understand that I bought a truck and shouldn't be concerned with fuel economy but 1 MPG over the life of the tires adds up.
I am wondering if I could get some feedback on people running either size with a 1.5" leveling kit. Did you notice any rubbing or significant fuel economy loss?
Also, what is your opinion on the lettering? White letters in or out? If you have pictures can you post them?
Thank you for your help!
Last edited by derekmj64; May 24, 2016 at 03:36 PM.
I just put on 275/70/18 that's a 33inch tires, no leveling kit all stock there's no rubbing and I have not seen a difference in MPGS it's a 5.0 with 3.55 gears
My truck is a 2013 FX4, EcoBoost, 3.55 gears, Auto Spring 1.5" leveling kit, factory mud flaps and the stock 20" wheels. I am looking at buying the new All-Terrains but I am not sure what size to go with (I am torn between going with the 275/60 R20 or 275/65 R20). I would like to go with the 275/65 R20 but I am concerned about rubbing (possibly on the mud flaps) and I have heard some people saying they lost about 1 MPG. I understand that I bought a truck and shouldn't be concerned with fuel economy but 1 MPG over the life of the tires adds up.
I am wondering if I could get some feedback on people running either size with a 1.5" leveling kit. Did you notice any rubbing or significant fuel economy loss?
Also, what is your opinion on the lettering? White letters in or out? If you have pictures can you post them?
Thank you for your help!
Ecoboost, 3.55 gears, 1.5" level up front running 275/60 KO2's. Photos are on my sloped driveway so it's a little more forward but the truck is pretty level IMO.
**with stock tires just after level
**after tires installed
MPG's is always inconsistent for me. I do 100% city driving so it's stop and go traffic. I used to put non-ethanol and got pretty good MPG's for the city (14.5 avg). now with regular i'm getting 12.5 rough average. still happy with the look. i went with 60 over 65 being again, city driving and the 60's are a D rated tire so a better ride with them over the 65's which are E rated and stiffer sidewall. i would have liked the taller tire though these are definitely taller than stock and noticed it right away when i went to get into my truck after i got the tires on. I'm VERY happy with them.
275/65/20 KO2 with roughly a 1.75" increase up front via BOSS coils. Rides fantastic. Lost about 1mpg overall, but gained a lot of it back in town via the tune...still suffers on the hwy though (rolling resistance).
Not a single chance it would rub on my setup, but I don't have flaps:
BFG KO2 Size Question
