My rig is also my daily driver. With soaring gas prices, I'd like to cut back how much gas my Runner drinks around town. What's the smallest tire size I should run on my 4runner. Mostly stock for now with the exception of some lift. I've got the 16 inch rims.

I'm gonna be getting a second set of wheels for some BFG MT KM2 in 255/85/16 when they come out. And yes, they are coming, ggot word from BGF the other day. They won't say when, but I'm thinking September.

 

if you want the best gas mileage stick with stock. If you go smaller, it'll be easier to accelerate, but you'll be revving higher. If you go big, you'll rev lower but spend more time accelerating.

Its best to stay with stock because toyota obviously made it that way for a reason. It works best with the rest of the car.

 

27x9.5 TSLs

 

245-70-16

 

they make a 195-45-16.... http://www.tirerack.com/tires/Compar...11&RunFlat=All

 

How long, if ever, will it take to offset the price of new tires in gas savings?

 

Dont go small tire, just get a tire with load range E and pump up the PSI. i just heard from another member that they have had a very large increase in their fuel economy simply by pumping up the PSI. i get 25MPG in my 3.0 so a newer 4Runner could/should get more.

 

How the hell are you gettin 25mpg? What psi do you run your tires at? I would like to try this.
Also, do you have manual lockin hubs...or add?

 

i have 265x75 Toyo Open Country M/T at 43PSI. i have ADD and soon going either SAS stock w/ 2: lift OR manual hubs of IFS.

Tire pressure makes the WORLD of difference in fuel economy! As the most recent commercial said, 5 PSI can make the world of difference.

 

stay with the stock height but find something narrow. look at geo metro's and little cars running around that get good mpgs. pizza cutter tires for the least rolling resistance.

Al

 

In the phoenix area, it's pretty easy to get a new set of used tires. Lots of people upgrade immediately after buying a truck. I've seen sets that were used to simply get the truck home for as little as $200.

Also consider I'm upgrading my offroad set to 255/85/16 bfg km2 when they come out. At nearly $200 each, they're expensive.

Running a different tire for around town stuff would GREATLY extend the life the offroad set.

Right now gas here is over $4/gal.

It would probably pay off pretty quick.

My other option is a to buy a second vehicle. That would also save wear-and-tear on my rig.

 

Running a Load range E would kinda be counter productive. The added rotational weight would actually negatively affect fuel economy.

I know what you say about airing up. I run at around 40 psi myself. I typically get about 17.5-18 mpg in daily driving.

I've noticed this past week that driving style has the biggest impact on fuel economy. I just got an extra 50-60 miles out of a tank by making steady, slow accelerations and keeping it under 65 (usually around 60) on the highway. I tried keep the rpm under 2k at all times.

 

Well i only got 23MPG with my old 31x10R15 Pro Comp Xterrain pumped to 38PSI. When i got the Toyo's that are Load Range E, i GREATLY improved my fuel economy. So i dont know if it was the size that gave me better MPG what but that is what i have from personal experiance.

 

I think it may have something to do with not running a cat. I too have 265/75s and like i said i only get 17.5-18mpg. I can't and won't run without a cat.

 

hmmm, I have no emissions testing here, and have hollowed cats before, never noticed an increase in mpg tho...usually the opposite.