I want BFG all terrain ko but....

[WindomEarles]

I'm worried gas mileage will drop. I currently run stock tires. How much of a hit should I expect? I'm going to use stock size.

 

[1engineer]

In the tenths if any.

 

[WindomEarles]

In the tenths if any.

Sweet. I've always liked those tires, but never have bought them. I'll go c rated based on your recommendation (another thread)

 

[El Diablo 82]

Minimal change. I lost about 2 mpg going to 295/70 E rated toyo muds so stock size bfg all terrain KOs would be negligible. I used to run those tires on an explorer and didn't lose any mpg over stock.

 

[Youngerarlaw]

I put them on my 4th gen with 18" and didn't notice much. Regardless, totally worth it.

 

[Kraeken]

I had them on my 4th Gen and there was no noticeable drop in mileage. I believe they were E's. I have E load Duratracs on my 5th Gen and there is also no noticeable difference in mileage. All stock size.

 

[TexasAg]

I've got stock size but E rated, boy these suckers are stiff! Probably should have got the C. I average from 15-17, maybe best I ever got with the factory dumflops was 18, can't figure out why my wife get's 20mpg in here SR5, I guess I have my foot in it a little more:shrug::shrug::shrug:

 

[THEROK]

You guys must defy the laws of physics. The ATs r simply put significantly heavier tires of pure unadulterated unsprung weight.

Check the tire weight and compare. They're prob in the 50s or 10lbs per corner ballparking it

I dropped about 2 mpgs which is a hefty decrease percentage wise.

Acceleration, braking, handling is all adversely affected. Just a matter of ur tolerance level for the offroad gains and in looks.

 

[Blacksunshyne]

Count me in as defying the laws then, I am running 275/70R17 E rated BFG A/Ts and get 17-18 or so. Actually handles better than the stockers on...and of course off road.

There was a half to perhaps 1 MPG lost, but a fair trade off for a great set of tires. Looks like I will get 60K miles out of this set, they have been rotated every 10,000 miles.

 

[THEROK]

Dumb people r everywhere

edit: just to be super clear, i'm not pointing toward one or two people here - nothing personal

 

[Antman]

I only have 1 tank on my E rated Duratracs, but I dropped almost exactly 1 MPG to 17.5. See what happens over the long haul.

 

[Ttn333]

Dumb people r everywhere

edit: just to be super clear, i'm not pointing toward one or two people here - nothing personal

Dumb people making dumb statements.

Just to be clear, I'm pointing at just one person. Nothing personal.

 

[03_4x4Runner]

I posted these articles a while back.

http://www.toyota-4runner.org/perfo...ers-more/88977-article-about-tire-weight.html

http://www.toyota-4runner.org/perfo...interesting-article-about-off-road-tires.html

I went from 265/65/17 to 265/70/17 BFg all terrain on my 4th gen and lost around 2 mpg. These tires were 1 inch taller than stock but much heavier load range c. My mpg was gps calculated to account for the size difference.
There is no way you can get the same mpg with a heavy 3 ply all terrain tire as with the stock tire. you will also notice a small lose in power due to getting the heavier tire rolling.

 

[STX4Runner]

I got stock size BFG ATs in C load. Very minimal loss in mileage. 1 to 0.5 or so. But it is so hard to say because you can never know if conditions when you are paying attention to mpgs are the same before and after tire swap. So many variables go into gas mileage. Once on the stockers I was like "screw the mileage, I need to get somewhere in a hurry." Went over 150 miles fairly agressively and got 23.4 mpg according to the computer. IMO, just do it. The look and feel of the TE totally changes for the better once you get rid of the Prius tires!

 

[Fernandina4runner]

I went with the stock size BFG AT's load range C. They are significantly heavier than the stock Bridgestone's that they replaced. They are also a little bit bigger than what was removed, their 265 and Bridgestone's 265 isn't the same.

My 4runner SR5 was and is stock except for the new tires. I went from averaging 20-21 mpg with stock tires, down to 18-19 with the BFG's.

I don't understand the people that are saying that they didn't see any reduction in mpg. I have mine inflated up to 40 psi and the ride is better than with stock, but I don't think my back could handle any additional psi.

 

[Blacksunshyne]

You guys must defy the laws of physics. The ATs r simply put significantly heavier tires of pure unadulterated unsprung weight.

Check the tire weight and compare. They're prob in the 50s or 10lbs per corner ballparking it

I dropped about 2 mpgs which is a hefty decrease percentage wise.

Acceleration, braking, handling is all adversely affected. Just a matter of ur tolerance level for the offroad gains and in looks.

Dumb people r everywhere

edit: just to be super clear, i'm not pointing toward one or two people here - nothing personal

So, from your personal experience with your 5th gen 4runner equipped with BFGs what kind of numbers are you seeing?

Nothing personal just curious... :thumb:

I'm only kidding around don't take it to serious

 

[Curt Sauve]

I run the stock wheel/tire combo in the spring and summer and average around 20mpg. In the fall and winter I run the BFG AT/FJ Steelies and average around 15mpg, but that is also running winter blend premium and a bit of towing and gravel roads while hunting.

 

[nw_4Runner]

I'm worried gas mileage will drop. I currently run stock tires. How much of a hit should I expect? I'm going to use stock size.

Went from Limited stock size of 245/60R20 to 275/65/R18 ... E-load rating, saw a 1-1.5mpg drop and got some extra hum in exchange for all other benefits. Sounds like you'll be sticking with a more stock experience, would only suggest considering if you need E v. C rating due to weight.

Let us know what you decide and results.