Been tracking my MPGs

2018 Platinum 4x4 with a 2" level on the front and recently put on 295/70/18 Toyo AT2 extremes. I've been tracking my MPGs since I picked it up in June 2019.

With lighter tires (and not mashing the gas pedal), I was averaging about 14 mpg. Too soon to tell for sure, but looks like I will am losing about .5 mpg with the heavier tires.

 

This makes sense as I have heard talk about heavier tires contributing to reduced mpg.

 

Interesting. I would have guessed more of a drop with 295’s. Any idea the weight of the toyo’s?

 

That’s a pretty similar setup to mine, I’m averaging around 13.9mpg mixed highway and mountains. Same size tires, but Cooper XLT’s

 

Did you verify your odometer reading with the bigger tires?

 

According to the radar signs, my truck reads closer to actual MPH with 295/70s than it did when it was stock. Speedo reads around 1MPH under radar signs now, at 65. Used to read 2-3 over at 65 when it was stock.

 

I wouldn’t base accuracy on radar signs. You don’t really care what the Speedo says, because it might be off. Check the odometer on a long trip. Use that corrected mileage to track your fuel economy.

 

I average 12.2 with stock sized ko2s, no lift lol

 

I average around 13 also with Duratracs 305 55R20's

 

After installing 4.88s I had to reset my Hypertech and used Google maps on my phone along with Ulysse Speedometer pro on the Phoenix android HU.

 

The AT2s are around 64lbs I believe. Haven't done anything with my odo.

 

generally each major enhancement like larger more aggressive tires, body lift, suspension lift, larger overhead rack, ect detracts .5-1 mpg. It does add up or down however you see it....

 

Interesting data. I track mine as well and here is a summary from my Fill Up app. I've owned the truck a year now. These numbers are stock suspension and stock 275/65/18 Michelin tires. The 17.62 mpg figure is from driving from VA to CO for an elk hunt this past Sept.

This will probably change since I'm about to level the truck and go up a size in tires (275/70/18). I don't see it being a big change though.

I'll also mention that the MPG calculator on our trucks is pretty accurate. My wife's Santa Fe is off a few MPG's.

 

The weight will always affect MPGs. Even more so when you do more city driving. Once you get going you should notice that average MPGs are the same. I carry a Four Wheel Camper on my truck full time now and with a 3inch lift and 295 toyos I get 11-12mpgs. My camper is around 1100lbs.

One thing that I have noticed is the brand of fuel I use. I normally fuel up at Shell gas stations and have better luck compared to non brand name places.

 

I’ve been averaging about 17.5 mpg with stock wheels and tires. Curious how much it’ll drop once I upgrade to 275/70/18 Falken Wildpeaks. I find the biggest difference in MPG comes from driving style. I’m extremely light on the gas.

 

What app is this?

 

Fill Up. Im sure there are better ones but I've been using this one for years now.

 

Nice spreadsheet. Are you recalculating your distance driven with the larger tires before doing your MPG numbers?

 

I'm still am exploring Ulysse and work good with the Phoenix HU

https://play.google.com/store/apps/details?id=com.binarytoys.speedometer

 

Thanks. No, but that's a good idea.

 

using a-car (fuelly) app.

i gave up trying to track this stuff in excel like the old days

 

also wanted to add these screenshots to show more of the app...

 

Damn, I'm jealous of 17 mpg.............

I'm a city driver with a heavy foot averaging 11 mpg