Mods and mileage

Drey06

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I've been trying to read through forums and can't find a straightforward answer.

Just looking at what I should expect in loss of mileage if I add 35s to my jeep. A range is fine, doesnt have to be exact. I eventually want to have a 2 in lift. Nothing crazy just a small upgrade without having to reconfigure everything.

If it is a couple miles it seems worth it. I dont commute far as is but if it is more than that, might just have to upgrade the rims and be at peace w it.

Any help would be appreciated, thanks!





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cOtter

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I would agree about 2mpg shift
 

Bruce Willys

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I've been trying to read through forums and can't find a straightforward answer.

Just looking at what I should expect in loss of mileage if I add 35s to my jeep. A range is fine, doesnt have to be exact. I eventually want to have a 2 in lift. Nothing crazy just a small upgrade without having to reconfigure everything.

If it is a couple miles it seems worth it. I dont commute far as is but if it is more than that, might just have to upgrade the rims and be at peace w it.

Any help would be appreciated, thanks!
Depends on how heavy you go. The heavier they are, the bigger the impact will be. Adding 10 pounds to each wheel may not seem like a big deal, but it will have a much bigger impact than throwing 40 pounds in the back of your rig. Because they will be spinning, the forces are multiplied. If you were to take a half pound metal ball and drop it on my head, I’d say ow. Tie that same metal ball to a rope and start spinning it and then hit me in the head, and I’ll be dead. I agree with what others said, maybe 2-3 mpg depending on where and how you drive. If you drive up a lot of hills, expect more of an impact. Lighter = better, unless you’re going for the most durable option.
 

RedundanT

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With a 3.6 I'm averaging 2.5mpg loss, a 3.0 diesel may not experience that much though.
 

MntsRcalln

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My 35 wheel and tire combo is about 100lbs.
21-23 unless im on the interstate at 70+ mph then it's 18-20
 

mwilk012

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315/70R17 KO2's with fairly heavy wheels. 2" Lift.

I get about 16, pretty heavy footed. I like high RPM's.
 

Djhyper66

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I’m got a 2020 jl sport with rubicon take off wheels and mopar lift , I get about 15.5 -16 mph , mostly city driving tho.
 

Jeepney Johnny

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OP mentions upgrading the wheels...I just wanted to mention that stock Wrangler OEM wheels are actually lighter than most aftermarket wheels. I see a lot of take-off sets sold for cheap, and think they're a bargain for what you get, a lightweight set of wheels.

Off the top of my head, I don't know the tires and sizes, but I know it's possible to find and install 35" tires on stock 17" Rubicon and stock 18" Sahara wheels.
 

Wabujitsu

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I will be looking for 35s that fit the stock 17x7.5 wheels. I don’t know if that will be possible.

Currently I am running 33s on my 2.0T with 8spd ZF, with heavy aftermarket front bumper, very heavy winch, and a 4.5” lift. I’m averaging 23-26 on country roads, about 18-20 on the interstate.
 

SmilesPerGallon

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Running Dirty Life rims without the beadlock function on. 35 BFG KO2 on a JLU sport so the 3.45 gears and the 3.6. I get 17.5 mpg. I also have rubicon suspension on with a .5 in spacer in the front so pretty close to the 2in lift you want to achieve but I also don't have the front air dam since I put a steel bumper on the front.
 

Elsinore73

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I’m running BFG AT KO2’s, 315/70/17 On my rubi with the stock 4:10 gears. Getting about 16mpg around town, 19 on the highway. 6 speed manual. Can’t tell you the loss in mileage as they are the only tires I have run. Hope it helps
 

Krondor

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2 door Rubicon, stock gears, and 6 speed manual transmission. Method 702's with 315/70R17 BFG KM3's on 2.5" lift. Normal driving.

Mileage
  • Stock averaged 21 mpg
  • Bigger tires averaged 18.5 mpg
  • Bigger tires and lift averaged 17.5 mpg
  • Bigger tires, lift, and added lights averaged 16.5 mpg (Also winter 4wd use) (17.3 mpg on summer fuel)
Still, when I'm keeping an eye on mileage, using a light foot, and keep under 65 I can get 18-19 mpg mixed driving (grocery getting).
 

McGilli

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Why do some people allude that having a lift on your Jeep would decrease gas mileage?

Or am I just reading peoples comments wrong?

3.5" lift (no new wheels/tires) was the first thing I had done and it never changed my average mileage of ~11l/100km...
 

aldo98229

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OP mentions upgrading the wheels...I just wanted to mention that stock Wrangler OEM wheels are actually lighter than most aftermarket wheels. I see a lot of take-off sets sold for cheap, and think they're a bargain for what you get, a lightweight set of wheels.

Off the top of my head, I don't know the tires and sizes, but I know it's possible to find and install 35" tires on stock 17" Rubicon and stock 18" Sahara wheels.
Completely agree. The OE wheels are often overlooked; they are an amazing bargain when you take into account the level of finish, craftsmanship, design, durability and light weight construction.

Their main limitations are backspacing and rim width: the OE rims are too narrow for most 35” tires.

If you are willing to work with a tire that is 35 inches tall by 10.0 to 11.25 inches wide, then OE wheels offer an excellent alternative.
 

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