aldo98229
Well-Known Member
- First Name
- Aldo
- Joined
- Nov 16, 2019
- Threads
- 86
- Messages
- 11,015
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- 27,655
- Location
- Bellingham, WA
- Vehicle(s)
- 2023 Jeep Gladiator, 2018 Fiat 124 Spider
- Occupation
- Market Research
- Vehicle Showcase
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- Thread starter
- #1
I realize no one confuses a Jeep Wrangler for a Prius, but I’ve been getting only 11-13 MPG lately.
My Jeep is a 2018 Sahara with 8,000 miles on the odometer. It has the V6, 8-speed auto, Selec-Trac. I added a Mopar lift, 35-inch ATs, a Mopar steel bumper and a Quadratec Stealth-10 winch.
The Jeep was averaging 20 MPG. Ten months ago the lift and the big tires came; MPG suffered a little. But fuel economy has taken a dive in the past month or two. I can’t figure out why.
I recalibrated the speedo with the Tazer back when I got the 35s. Now I’m noticing the transmission stays between 3th and 4th gears around town. At 75 MPH it stays on 6th gear; it will go into 7th gear only if it is totally flat or going downhill.
Current tires are General Grabber AT-X; I keep them at the recommended 35-36 PSI. Each tire weighs 67 lbs. They are mounted on Quadratec 17x8.5 wheels, weighing 28 lbs each.
It is depressing to watch the fuel gauge go to empty so quickly.
I am thinking of replacing the 35x12.5 inch tires for 285/75R18 (35x11 inches) ATs mounted on the factory Sahara 18x7.5 wheels (25 lbs each). The narrower tires weigh 60 lbs. I’m guessing that the narrower footprint, and the combined lighter weight of each wheel and tire, might help improve fuel economy.
Has anyone else seen a sudden precipitous drop in MPG like this? Thoughts? Ideas?
My Jeep is a 2018 Sahara with 8,000 miles on the odometer. It has the V6, 8-speed auto, Selec-Trac. I added a Mopar lift, 35-inch ATs, a Mopar steel bumper and a Quadratec Stealth-10 winch.
The Jeep was averaging 20 MPG. Ten months ago the lift and the big tires came; MPG suffered a little. But fuel economy has taken a dive in the past month or two. I can’t figure out why.
I recalibrated the speedo with the Tazer back when I got the 35s. Now I’m noticing the transmission stays between 3th and 4th gears around town. At 75 MPH it stays on 6th gear; it will go into 7th gear only if it is totally flat or going downhill.
Current tires are General Grabber AT-X; I keep them at the recommended 35-36 PSI. Each tire weighs 67 lbs. They are mounted on Quadratec 17x8.5 wheels, weighing 28 lbs each.
It is depressing to watch the fuel gauge go to empty so quickly.
I am thinking of replacing the 35x12.5 inch tires for 285/75R18 (35x11 inches) ATs mounted on the factory Sahara 18x7.5 wheels (25 lbs each). The narrower tires weigh 60 lbs. I’m guessing that the narrower footprint, and the combined lighter weight of each wheel and tire, might help improve fuel economy.
Has anyone else seen a sudden precipitous drop in MPG like this? Thoughts? Ideas?
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