Sevir

Even if you rotate them, you still have them ballooned. Your tire is going to ride in the middle no matter where you rotate it to with that much PSI.

cowboy_trucker

I dont care about milage. I get decent milage, but when the tank is empty I fill `er up and drive somemore. If you want crazy high milage get a bicycle.

annabelle

I get 70,000 to 80,000 miles out of my tire w/ even tread wear. I rotate every 5,000 miles w/ a spare. 10 sets

infidel

Check this out> Cummins Secrets of Better Fuel Economy

Mark Hodowanec

Tires should not baloon unless you overinflate them. My 315 BFGoodrich ATs lasted 70,000 miles & I ran them at MAX PSI (50 psi). They wore dead even. Who knows, maybe if I would have dropped the pressure to 25 psi they would have lasted 140,000

Formerice

I agree if you have a real truck, like a Dodge, ran my OEM Goodyear HP 20" at max air and they went 75,000 miles, including some burnouts and a lot of drag racing. The Toyota that I had before, none of the OEM Firestones made it past 20,000 aired down to 30 psi in a futile attempt to make the ride tolerable.

can17

If you're getting up to 28 MPG then please tell me what YOU'RE doing to increase fuel economy.

Sevir

The person i replyed this too said they was running all 4 tires are 80psi

annabelle

MY 265 BFG's are E rated and have a Max cold PSI of 80 degrees.

Dangerous Dave

Driver technique has as much or more than ANYTHING to do with it.

I was running 80 at all 4 corners but the ride was hinky and it MIGHT have killed my right front bearings.

My best hand calculated tank ever was high 24s.

My average after 191 fill ups stands at 19.313

I too would like to do better, but I'm pretty happy all the same.

I am considering 235/80-17s when I finally get to replace my WAY worn out michelin 265/70-17s.

Sevir

are the 235/80-17's a taller tire? I am going to upgrade to 285/70/17's because it will keep the stock width but give me a taller tire. Sorry i dont understand the tire convertion/% formula

Mark Hodowanec

Taller than what? A 235/80-17 is 31.8" tall. A 265/70-17 is 31.6" tall.

The conversion:
first number is the width in mm
second number is section profile (sidewall height as a percentage of width)
third number is rim diameter in inches

To get the overall diameter)
OD = (first number/25.4) x (second number x 2/100) + third number
for a 235/80 - 17
OD = (235/25.4) x (80 x 2/100) + 17
= 9.25 x 1.6 + 17
= 31.8

Dangerous Dave

It specs to about 5mm taller, but nearly an inch narrower which is why I'm not sure about doing it. I KNOW it will run with less resistance but handling might suffer too much.

GhettoVaquero

keep it under 2000rpm, straight pipe your exhaust and get a less restrictive intake.

I run 35s on my 4x4 with a work horse intake and what is esentially a straight pipe exhaust and average 20mpg on my TANK. mind you i do a lot of highway driving at night but it can be done.

Mark Hodowanec

I'm getting 20 plus on mine as well w/ 4X4, 35s, & tone ring mod. It takes a light foot & keeping it at 65 or so on the highway.