How many MPGs could I gain (realistically) going back to stock tires??

No, just bought the 4 cylinder engine and stayed pretty stock. The CAFE numbers on the window stickers were easy for me to meet, and sometimes exceed.

 

I'm paying $5.56

 

Prices were 4.86 yesterday, 5.19 today... kicked myself for not filling up a week ago at 4.35.
It will go up more with the Holiday approaching, always does, those oil folks know how to make a buck or two.
They'll jack it up to 6+ and then ease off down to 5.xx and we'll think we're getting a deal.

Guess I'll bite the bullet and just do it.

 

i have cooper discover m+s 6 plys on my steelies for winter I gain 2-5 mpgs going back to stock tires on steelies.

 

The a/t goodyears are wider also, plus due to their thread pattern i think they trap more air creating more rolling resistance. I remember driving my tacoma home the day i took it from the dealer i bought it from. It was a 160 mile ride back home. I got a little over 24 mpg on the truck with the oem firestones while keeping speeds under 65 mph.

 

Stock tires aren’t going to change the fact that you are driving 100+ miles a day…that is clearly your money burning factor here…

You need a different vehicle to see some changes in your wallet. Not different tires on your tacoma. Just my honest perspective from someone who works with many 100+ mile commuters every day. (Mines under 30 round trip)

Not saying its a bad idea or you shouldn’t do it if you want to, but it’s not going to save you any noticeable money.

I see it as common sense. 100 miles is a lot to be commuting daily even if it were a brand new stock tacoma

 

I had the same thing happen. My Prerunner, which I bought new, had the 245/75-16 Dunlop AT20. As I was approaching 50,000 miles, I found a set of TRD/OR wheels at a good price, so I bought them and then when I bought new tires I went with the 265/70s that are the stock size for the OR. Went with Firestone LE2, which weighed 7 lbs more per tire. Not sure of the weight difference between the stock steelies and the OR wheels, but I lost 1.5 mpg on the highway, and I track my mileage on a regular basis. Went through 2 sets of the Firestones and just last week bought new tires and went back to the stock tire. Haven’t had a chance to do a long highway run yet, so I don’t if I’ll regain what I lost. It’ll be interesting to see.

 

I’m on stock size tires (Michelin LTX AT2) 265/70/17 with SCS Ray10 wheels. I get 18 mpg tank average with mixed city driving. Rarely on the freeway. If I were a freeway driver, mpg would be about 22mpg. Maybe 23.

 

That doesn't make sense as far as the firestone destination le2 tires being 7 lbs heavier than whatever you had. I weighed the same firestones that came off my tacoma. They were just a couple oz's over 33 lbs. You had to have some real oddball tires around that size if they were 7 lbs lighter.

 

Yeah, I’m off a couple of pounds. When I bought them, the specs for the LE 2 at 265/70 said they weighed 37 lbs. The Dunlops at 245/75 weigh 32 lbs. Sorry. But the fact remains that mileage takes a hit when you go to heavier tires.

 

I have two sets of wheels and tires partly due to the difference in fuel economy. I have the stock Goodyear Wranglers which I use as my daily driving set and a I have tall skinny 33” e-load mud terrains that I use as my wheeling set.

On the road, the two sets have about a 1mpg difference (accounting for the diameter difference), a noticeable difference in a acceleration, a noticeable difference in comfort, and a really noticeable difference in noise. The mud terrains do a lot better off road, but they suck on the road. Trade offs trade offs.

EDIT: the mud terrains are also a lot harder to mount and balance.

EDIT: I also owned a 2016 SR5 with all seasons, an auto transmission, and a chin strap and it got 2-4mpg better than the stock 2020 OR 6mt in mixed driving. Driving habits matter and I tend to rev the manual higher than the auto.

 

My stock 2019 manual V6 OR was averaging sub 20, even on the highway.