Big T

I wish I could get close to that best MPG 14.86 usually 13.23 all hand calculated speedo dead on.

mudder500

I got 444 to the last tank with the light coming on. So i have no clue what that equals wither!! But most i got out of a tank was 500 with 35's.

Ram Daddy

actually a 315-70 IS a 35X12.50....



....and if you only drive 6K miles a year , who cares what your mileage will be

95ram

Mileage will also depend on the tread pattern. An AT will get better MPG than an MT. A solid outer lug will get better than an AT. My usually get around 16-17 mixed.

matego

They are similar but if you go and compare, for example a BFG 315/70/17 to a Dick Cepek (what I have) 35x12.5 the Cepek is 1/2in. taller and 9/10in. wider.

If you ever seen them side by side you would think they were a whole tire size bigger, its a pretty big difference.

Hintz

Im running 315/70 and get an honest to god 19.5 MPGs hand calc., but I have no lift/ leveling kit and a 6speed

oneslowyfz

Hey thanks guys i know i dont really drive the truck, i just got the leveling kit in i orderd the daystar urithane because i have read on hear people have had some issues with noises(sqweeks) with the metal. thanks for all the input and i will try to post a pic once i am done with the truck..

jnester

best mine got since the lift and tires is 20hwy but normally 16 with the stop and go drivin i do

oneslowyfz

have you guys herd anything bad about the daystar plastic leveling kits? thanks in advance?

YJ_Aaron

I just drove 1000 miles in a 05 6 speed on 315 BFG's this weekend. All highway and the hand calc'd mileage was 18.8MPG average. That was running 70-75mph consistently.

JCLeary

I've got 35" Toyo MT's, and I get 11-12 in town and a best of 14 on the highway with the cruise set at 70. On one stint from LA to SF at 75 I got 12mpg... Unloaded. I'm kind of a geek, so I track my mileage. I've entered almost every tank over the 15k life of the truck, and the lifetime average of the truck is 12.1.

I'm curious to see what it is now with the Smarty and trans goodies...

Chopper_Bob

I do believe that mileage numbers vary greatly between the Automatic and the Manual trucks. I have a manual and it seems to spin more RPM's at highway speeds than my buddies Auto. Therefore a taller tire would help mileage on trucks with the manual transmissions. If you are running an automatic tall tires seems to hurt the mileage numbers. I don't know what the high gear ratio is on an automatic compared to a manual. But anyone with a manual would probably agree with me that we are always looking for another gear when arriving at highway speeds. I actually have better fuel economy driving around town than I do when I get on the highway. (Average 19.5 around town / 17 on highway) As soon as my stock tires are wore out I was planning on going to 35's. At one time I figured that this would drop my rpm's at 70mph from 2200 to 1900. In my mind I would gain fuel economy. And yes, all of my mileage figures are hand calculated. The computer reading is practically worthless.

molalla1ton

Well yes it did, when I was more or less stock I would get around 20, that of course if I drive like grandpa (which I am one )

JOESHTRDDSL

Sorry to hyjack the thread but how do you like Rip's twins molalla1ton.

molalla1ton

Rip's twins are fantastic very, very quick to spool.