Fuel Mileage After Larger Tires - 3rd Gen

I know this is a touchy subject with some, but I’ve got to ask. What is your fuel mileage like with larger size tires? If you could post your numbers with your setup specifications. When my truck gets out of the shop I’ll be upgrading. I thought I knew what I wanted but now I’m on the fence. The mpg isn’t what they advertised already so let’s have it.....

 

13, calculated by hand.

295/70 18's

 

295? What are you specs on the tires? 295’s come in different sizes

That sucks by the way!!! 3rd Gen by the way?

 

Oops didnt see the "3rd" gen tag.

Nothing to see here

 

haha it’s all good

 

I’m assuming 2.5 Gen not 3rd? That’s not bad for that body style. I’m looking for third generation folks

 

@rruff would say you should get BETTER mileage with larger tires. So go get some 40s on there and let's get this mileage to 30mpg

 

I read that when it was posted. I just walked away haha

 

I will be a good test subject for this if I ever get my truck. I believe i’ll be the first one to run a large AND lightweight setup. I have a set of 315/70/17 goodyear territory MT on Motegi MR150. I will have the weight of this combo on Tuesday evening most likely. I’m expecting the combined weight to be similar or even lighter than the factory wheels and tires.

 

I’m really curious. Either way I’m going larger than stock. This will help me gauge how big now. I planned on running a 20x9 +18 with a 275/60 Cooper Rugged Trek. It’s a taller 33 and it’s as light as the factory tire, almost. I’m swaying toward 17’s but idk.... TOO MANY CHOICES

 

Pull the trigger.. I"ve been looking at the same setup w/ a 20x9 + 20 offset. That tire isn't E rated so saves 10-12 lbs a tire over some of the larger options.

 

Exactly why I want that tire. It’s aggressive, light, has a mileage rating and it’s a hair taller than a 33. Win win with that tire. If I went with 17” I’d run a 285/75

 

I saw a video on here where a guy put 33” I believe and his mpg dropped down to 2.5 gen numbers. There was another member that had already bought bigger tires. Don’t know if he put them in already and did a mpg test

 

I’ll try and find the video, thanks

 

It was in my history. Watch it all or fast forward to around 6:30 minutes. Lost 5mpg on the Yokohama M/T. Didn’t pay attention to the actual size though.
https://m.youtube.com/watch?v=DILVPXbSNwg

 

I'm at 14.8 with 295/70/18 tires...I'm expecting it will drop a little more...

 

Thanks y’all

 

275/60r20 bfg ko2 load range D, dropped my mileage about 1 mpg from what I can tell.

 

That video is ridiculous. He claimed 24mpg before and I can only see that on pure highway road trip driving. My daily round trip commute is approximately 80 miles and I’ve gotten 16.9 (three tanks) mpg and that’s driving easy. Before it went to the shop I was getting about 1 mpg better with ethanol free

 

Those are super super heavy tires with a mega aggressive pattern- terrible for MPG's

this is 2.5 gen i take it, not a 3rd

 

Yes he was doing a lot of long drives in warm weather driving around 60

 

Getting about 15 mpg around town on 35s haven’t taken it on any highway trips yet.

 

That’s not horrible. At least compared to my current mileage

 

I went 18x9 +18 with a 275/70

 

Just for weight, it was posted elsewhere here ( not sure what thread or by whom) I wrote it down & moved on!

2022 Stock TRD 18in rims with Michelin LTX Trail (265/70 R18) came in at 65.4 lbs on a digital scale - for reference

 

I just measured my TRD 20” with LT275/65R20 Cooper AT3 XLT combo at 97 lbs. 60lbs tire + 37 lbs wheel; heavy…

I also had measured the stock 265/60R20 Falkens alone, which came at 37lbs.

Haven’t driven around much to report mileage. However, this truck has lots of torque, so initial impressions in terms of drivability have not changed for me.

 

That was me. Someone asked about the factory setup weight.

 

the wheel AND tire came in at 65 lbs? I find that hard to believe. I could be wrong but that seems extra light.

 

agreed. my tundra wheel without a tire on it is 40.5lbs. unless it had a bike tire mounted on it 65lbs would likely just represent the weight of one tire.