Feathermerchant

Here is mine. I think it's great for a huge, heavy truck. This is with 3 people, luggage for several weeks and 3 bikes. See my sig for truck details.
Actual mpg was about 20.2

Wiggum

I have the AS 1.5" level it, and 2" rear block on my 2014 FX4 screw 5.0L V8 w/ 3.73 rear end ... E rated 275/65r20 (34" tall) tires ... I'd say my driving is "average" in terms of baby'ing it and hitting the gas pretty hard ... and I get about 15mpg in the city (stop and go traffic) ... I get about 18 on the hwy at 65-70mph.

I'm fine with that.

azmidget91

Dropped down a bit, I think we were getting bad gas in my rural town.


Came back up though, I took off my air dam when I lowered my truck, I have been thinking of putting it back on to see if I can get a little more.

BE25FX4

This is the same for me.

blueovelboy

I get 20 all day long if I can keep my foot out of the go peddle. but some jack wagon is always doing 50 on the freeway and I have to jump out in traffic doing 65 70 to pass and it drops like a rock when your opening it up to pass! but last trip to LA we got on the road set Cruz to 60 with the TT and got 12 MPH average pulling my 7000 LBS of trailer.

BE25FX4

did you tune your truck? otherwise everything your computer is reporting is off.

Wiggum

nope ... no re-tune ... I'm making my best guess regarding actual miles traveled and how much I fill up each time. I haven't actually put pen to paper to figure it out because I really don't care EXACTLY what my MPG is ...

FYI: my dash computer is reporting about 13.8 MPG right now, but when I do the math, it's more like 15 MPG due to the size of my tires.

I might keep a log for the next few thousand miles and see though ... just cuz...

Kalebsnod

15.1 mpg with 33x12.5x20 toyo open country mud terrains.

brianw0048

iTrader: (1)

2014 STX SCREW - 5.0 - 3.55 - Cooper at3 275/55/20 - Ford bakflip - 17,265 miles

I do a lot of highway driving in the hills of WV, I usually ser my cruise around 73 mph.

Lifetime average 17.1. Heading to Hilton Head in August and I'm interested to see what it gets on flatter ground.

justjimmy

You math is still incorrect because the miles traveled will be off cuz of the larger diameter tires.

A tune to adjust the tire size is the only real accurate way to determine mpgs.