One Stop MPG with Lift+Tires Thread

[Ezekiel2517]

I would like to try to see if we could get folks with different lifts and wheel combos to post their observed before and after MPGs in one consolidated spot. There are lots of threads for different specifics and then a smattering of replies amongst the hundreds of pages of lift threads. This would be a very valuable resource for us who are still considering which lift is the right one

 

Please post as much of the following info as possible so we can factor in all the variables. I think this would be really handy to have all in one place! Thanks!

 

Year: Ex 2014 or 2015

Drive: 4WD Z71

Motor: Ex. 5.3

Gears: Ex. 3.73

Lift: Ex: Ex. 2" Fabtech thingamabob

Level: Ex. 2.5" Rancho supergizmo

Airdam: Yes or no

Other MPG mods: Ex: Catback exhaust, tonneau

Tire Size: Ex. 275/60/R20

Tire Make/Model: Ex. BFG AT KO2

Wheels: Ex: Factory Chrome 20s...

 

MPG Before: City/Hwy

MPG After: City Hwy

 

[blackout07]

Go ahead and add the embellishments category

[frenchsquared]

Year: 2015

Doors: 2

Drive: 4WD Z71

Motor: 5.3

Gears: 3:42

Level: Open Country 2.5" Front, 1" rear

Air dam: Yes

Other MPG mods: soft tonneau

Tire Size: 265/60/R18

Tire Make/Model: Factory Goodyear SR-A

Wheels: Factory Z71 18's

MPG Before: 16/22.5

MPG After: 16/23.8

2.5 level made no change. Increase is because I have gotten more efficient at driving the truck.

I am going to install tires tomorrow and drive for a week then I am going to remove the air damn.

I am making one change at a time to see the impact of each.

Cold weather last 2 days, I have been in the 12's

[Ezekiel2517]

THats pretty darn good mpg lift or not!

[junkyardz]

inb4 the I avg 20mpg with level and 35s comments...

[C6 Doberman]

Year: 2014

Drive: 4WD Z71

Motor: 5.3

Gears: 3.42

Lift: 6" ProComp

Airdam: No

Tire Size: 35x12.50x20

Tire Make/Model: Procomp Extreme A/T

Wheels: Fuel Hostage 20x10

 

City: 12-14 mpg

Hwy: 12-16 mpg (Driving around 60 mph get you 16 mpg. Driving over 75 gets you closer to the 12 mpg)

 

Never drove the truck without the lift so I have no prior data.

[Spurshot]

THats pretty darn good mpg lift or not!

 

That is! From what I can gather, staying below 75 is worth big mpg. Staying below 65 is another big step. One guy was driving around in the 60 mph range and getting fantastic mileage.

[KARNUT]

That's true without a lift too, stock with the 342 gear I get almost 22 MPG at 72 MPH. At 75 MPH Im down to 19 MPG running 93 gas. Just a little more info for your comparison.

[Brock Samson]

Summary: Started good, ended worse.

 

There should be another note as to if you're using the computer or hand calcs for the mileages.

[Ezekiel2517]

concur on the staying below 65. Country roads are really the mpg highlight of this truck. I have done 25mpg over a 50 mile stretch before.

 

I hope we get some more replies on this topic. I was hoping to get enough data to draw some conclusions about diameter, vs mass, vs, gearing, vs air resistance.

[CAtaylor]

*Final Configuration before selling truck*

Year: 2014

Drive: 4WD Z71 CC SB

Motor: 5.3

Gears: 4.56

Lift: 6" ProComp

Airdam: Yes

Tire Size: 295/65 x 20. (35.1x11.8x20 64lbs each)

Tire Make/Model: Toyo AT2 XT

Wheels: 20x9, 0 offset, Moto Metal 962

Tuner: Blackbear

Exhaust: Magnaflow 18" single in and out dumped over exhaust. No resonator or flapper

Bed Cover: Diamond Back SE

Country City: 16-18 mpg

Hwy: 16-17.5 mpg at 72mph cruise

W/ 3.42 gears, Pro comp Xtreme MT2 35x12.50x20 (34.8x12.8x20 73lbs each), Hpertech Spedo Calibrator, Exhaust

Country City: 12-14 mpg

Hwy: 13.5-14 mpg at 72mph cruise

W/ 4.56 gears, Pro comp Xtreme MT2 35x12.50x20 (34.8x12.8x20 73lbs each), Hpertech Spedo Calibrator, Exhaust, Diamond Back SE bed cover

Country City: 15-17 mpg

Hwy: 15-15.5 mpg at 72mph cruise

Truck came with Lift and Tires so not sure on stock data.

[surebuttercringe]

Backing mine up with hard data. No embellishments here! All data hand calculated using the Gas Cubby app for iPhone.

 

2.5" level kit, air dam removed and Toyo Open Country AT 275/72/18 tires on factory wheels have been on since day 1.

 

You'll notice the last couple of entries had some wavering in the graph. This is because in the last two weeks the truck has been driven from Houston to New Orleans and Houston to Dallas. These were the first real road trips the truck has seen. Mileage dipped significantly due to my wife and her heavy foot because she was excited to get to the football games both times (Go Buckeyes!) and was doing 75 - 85 mph each time. Most other times on the graph were normal around town driving and to and from work, a mixture of city and highway.

 

 

[R1JAKE]

Backing mine up with hard data. No embellishments here! All data hand calculated using the Gas Cubby app for iPhone.

 

2.5" level kit, air dam removed and Toyo Open Country AT 275/72/18 tires on factory wheels have been on since day 1.

 

You'll notice the last couple of entries had some wavering in the graph. This is because in the last two weeks the truck has been driven from Houston to New Orleans and Houston to Dallas. These were the first real road trips the truck has seen. Mileage dipped significantly due to my wife and her heavy foot because she was excited to get to the football games both times (Go Buckeyes!) and was doing 75 - 85 mph each time. Most other times on the graph were normal around town driving and to and from work, a mixture of city and highway.

 

 

 

Were your Toyo A/Ts LTs or P metrics? Btw this looks like a great app!

[seansharley]

2014 CCSB 4X4

6.2 3.42 GEAR

K/N Filter

stock

275/55/20 Michelin

15-17 city 19-22 hwy

 

4" lift, airdam still on

20x9 XD Spy

305/55/20 Nitto Terra grap

13-15 city

15-17 hwy

[JerryCanada]

Year: 2014

Drive: 4WD Z71

Motor: 5.3

Gears: 3.42

Lift: 2.5" Front 1" rear RC

Airdam: Yes

Other MPG mods: GMC Tonneau Cover

Tire Size: 275-65-18

Tire Make/Model: BFG AT KO2

Wheels: Factory 18"

L/100km Before: 14/10

L/100km After: 18/13

I had the kit installed for about a month before I changed the stock tires and the fuel economy was barely changed. The tires are what made the loss in fuel economy. The extra ground clearance and traction is all worth it.