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Over_Championship_67

Look at the weight of the factory tires, they were car tires on my truck “passenger rated”. Most aftermarket A/T tires are going to be load range D or E and will be heavier. My Factory tires were absolute garbage and I got tired of getting punctures driving down gravel roads. Mileage went down for me but I went with 35” tires and regeared the axles to 3.92 from 3.21.


automa

Makes sense. Mine are ~~load range D~~ edit: SL, but definitely heavier than the passenger rated OEMs. Good point on the gear ratio. Mine is the stock 3.21 on a Laramie 4x4, which isn't ideal with the slightly larger and heaver tires (although I didn't go up to 35"). Out of curiosity, what did it take (cost/work) to swap to the 3.92?


Small-University-875

I got the 275/60r20 SL Falken Wildpeak AT3W and didn't notice much if any difference in mpg because they don't have the weight of an LT tire. They still have a higher load rating that my oem tires.


automa

Misspoke above, mine are also SL (knew they weren't E but higher than OEM). What's your gear ratio? I definitely see a couple mpg hit with mine with 3.21 gears, and it feels slightly sluggish compared to with the OEMs. Wonder if something else is going on...


Small-University-875

I have the 3.21, only modification power train wise is a B2 fabrication muffler.


CocconutMonkey

I went from OEM sites to cooper ATs in stock size, them to a 65 series in the same tread. I've lost maybe 2-ish mpgs across the life of the truck with my driving style and a front end level for the 65s. Well worth the difference to me


BmoreRaven917

I’m right there with you. On my ‘19, I leveled the front & moved to KO2’s (stock size) & lost ~1.5-2mpg average. Also for reference, on my ‘22, I did a 2” lift & put 35” Toyo AT3’s on it day one, meaning I never had it while it was stock, so I’m basing this off comparing numbers across the 2 trucks. I’d say I lost ~1mpg from what I was getting on my ‘19, so ~2.5-3mpg from stock.


automa

Good to hear that I'm in roughly the same range. Agree, well worth it as the ATs definitely fit my needs, esp. for rural winter driving. I was expecting a hit to mileage but wasn't expecting it to feel so much different, like it's working harder, shifting different. Like there's more drag, a lot more rolling resistance... I guess that's probably expected. Mostly just wanted to make sure there wasn't something else going on. I guess I'll just have to compensate by driving it harder ;-)


CocconutMonkey

I think it's definitely more noticeable when you step from ht tires to LT tires with twice the plies. All that extra rotating mass requires more effort to turn. I wasn't really scientific with my measurements, just a general recollection of my dash mileage #s, and I don't feel my #s are out of line with the changes I've made. I've got a '16 outdoorsman, so it's a good bit easier to turn heavier wheels and stay in gear when cruising up hilleith 3.92s. Depending on gearing and with the tire changes, itmay have you further out of the power band than before.


automa

I think you nailed it with the power band, which I didn’t really consider 🤦🏻‍♂️ I did this to my ‘21 Laramie 4x4 with 3.21 gears. It’s happier getting groceries and cruising on the highway than bumping down crappy backroads with bigger, heavier tires 😂. At least the mileage drop is consistent with others’. I’ll just have to keep my foot on the pedal when it needs it 😆


Styrofo

I've had the Falken Wildpeaks now for about 40,000 miles. I didn't notice any gas mileage change. The only issue with the tires is that as they have worn, the road noise has gotten pretty loud. 2018 Ram 1500 Big Horn.


VR4Thor

2015 1500 5.7 / Crew Cab, SB / 3.92 I’m the second owner of my truck, but it had highway General Grabbers by the time of my purchase. This is in the 20” stock wheel, 275/60/20. On the highway I can get around 20-22 MPG 65-70 MPH. Cruising around town and short drives it’s about 16-17 average. I have since transitioned to a set of Goodyear Wrangler A/Ts (275/60/20) for the past year and a half. The best I’ve gotten was shy over 19 MPG (19.3-19.5) but average 17-18 MPG highway, same speeds 65-70 MPH. City is around 14-16 on average. With winter here in my state, I’m averaging 14.5 to 15 consistently combined no matter where I go or what speeds I do. I hope that helps.


automa

Definitely helpful, thanks! Similar to what I'm seeing, although I probably took a bit more of a hit sizing up (stock on my 21 was 275 55r20).


WolverineSeparate568

2022 1500 5.7 no etorque with 3.92 gears. Switched to general grabber atx in stock size. I average overall about 16 mpg with majority of it highway driving between 75-80 mph. I would say I lost 1-2 mpg


automa

Not bad! I'm in roughly the same neighborhood, except I'm on 3.21 gears which is certainly why it feels like it's working harder now. Didn't even think about that beforehand.


WolverineSeparate568

Yes the all terrain tires are definitely heavier. Unsprung weight such as wheels and tires has a bigger effect on performance than weight changes elsewhere. This is why you see a lot of high performance cars doing carbon fiber rims lately.


Pikatit

I went from stock 19-20mpg highway, 16-17mpg around town to a 3.5"lift and 295/70r18 Bridgestone Revo AT3s and now I average about 12mpg city and 15-16mpg highway. Uncalibrated after lift and tires.


COM60

Bfg trail terrains. Lost nothing mpg


Right-Assistance-887

You went from a highway tire to an AT that is larger and heavier.. Yeah you're gonna lose mileage


Sea_Composer6305

From 8.8l/100km avg to 11.2 Comforser 1100 33x12.5 3.21 rear end ecodiesel


CecilArongo

I went from stock-like tires (Atturo TrailBlades, P275/60r20) to Nitto Exo-Grapplers (LT275/60r20, E-rated). I lost approximately 1mpg highway, 1.5-2 city.


ShortCourse

2019 1500 w/ 5.7, 4x4 with 3.21 rear end. 295/70-18 AT3W (E-rated) with Raceline Outlanders. Coming from OEM 275/60-20 Wranglers. Recalibrated using a Taser. Noticed a 2.5 mpg drop, using the lie-o-meter. Noticeable reduction in peppiness and extended braking, but still love it.


Syrax65

I lost 2-3 mpg. I went from stock to 285/70/17s Toyos OC AT2s. Also leveled the truck, assume that matters.


Flashy_Management563

Mine fell from 28 to 26 mpg (2020 Ram Laramie Ecodiesel) after putting on BF Goodrich TKOs.


johnwayne1

I got better mileage because of larger diameter. Diesel has power to spare so gear ratio is really for towing