6.7L mileage with oversize tires??

[Daburt]

A friend of mine has an 07 mega 4X4 6.7 2" leveling kit,juice w/attitude 35"x20"X9" Toyo Open Country M/T , 6-Speed Man Trans w/ 3.73 gears averages 700-750miles per tank on highway going from here Cuero, Tx to Lake Charles, La around town for a week and back home with no fueling in between!!!

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2008 Ram 2500 SLT Mega 4X4 HBS 2" leveling kit, Audibahn complete system, dpf,cat and muffler fell off complements of Snap-on and the 8"stacks are in the mail!

[mega1]

I run 305/70/17 nitto terra grapplers on my 08 mega cab and I have 5500 miles on it. I only get 12 to 12.5 empty and 8 to 8.5 pulling my 24ft gooseneck. These are hand calculated numbers.

[porkchop2245]

I have 315/70/17s on mine with egr on and exhaust gone i was at about 15.5 hand caculated with egr gone and exhaust gone im at 17.8 hand caculated

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2007 Mineral Gray 2500 6.7 Cummins 6 speed auto,6in Bds lift,35in motorcraft courser ats,5.9 Flat air filter,BayArea 4in TBE ,Missing EGR must have fell off Vortex Bedliner and Sprayed Rockers, Chrome door handles

[Yellow68SS]

i lost about 3 mpg with my 37's, and that is with the speedo corrected.

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07 QC SB Sport, 6.7 auto
6 inch SuperLift ridin on 20" black Mako's with 37x13.50 Xtreme AT's
Edge J/A, Power Pup, MP-8, BADP delete and down pipe, EGR delete

[07HighLife]

what about anybody runnin 37in toyos? whats your mpg

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[04 ram 1500 5.7]

my gasser gets 8 if lucky... hence the want for the cummins

[JASE4X4]

Originally Posted by 07HighLife

what about anybody runnin 37in toyos? whats your mpg

13-16 mpg, diesel at $4.40 a gal. and still running 37s. Only in America!

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'07.5 3500, 6.7L, 6 SPEED AUTO, LARAMIE MEGACAB, 6" LIFT, 37x13.50x18 TOYO MT'S, SC F-PAQ, MP-8, AIRBAGS, MOPAR SRT HOOD, BUCKSTOP BUMPER, WARN 16.5TI, PIAAS.
COMBAT VET, SSGT-USMC

[dieselrambud]

Originally Posted by JASE4X4

13-16 mpg, diesel at $4.40 a gal. and still running 37s. Only in America!

You got 3.73 or 4.10 gears? How's the power?

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2008 2500HD, 4x4, inferno red, 3.73, megacab, 6-auto, eBay color matched flares, Rize 8" lift, 37"x12.5" Pro Comp Xtreme ATs, Dick Cepek 17x9, 35% front tint, Bilstein 5100s

[JASE4X4]

I'm running 3.73. Power was pretty good until it hit fourth gear, then it fell on it's face. Now I have a Superchip flashpaq on extreme and TS MP-8 turned all the way up, power is no longer a problem. I actually gained 2-4 mpgs with this set up if I keep my foot out of it. I was getting 11-12 mpgs with less power. I also use Stanadyne diesel additive, I'm told it helps with mpgs also.

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'07.5 3500, 6.7L, 6 SPEED AUTO, LARAMIE MEGACAB, 6" LIFT, 37x13.50x18 TOYO MT'S, SC F-PAQ, MP-8, AIRBAGS, MOPAR SRT HOOD, BUCKSTOP BUMPER, WARN 16.5TI, PIAAS.
COMBAT VET, SSGT-USMC

[redfisherman007]

Did yall take into consideration that some of you all might have different rear ends?lower gears burn more fuel.

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THIBODAUX,LOUISIANA
2008 Q CAB 6.7
6 SP M B&W FLIPHITC

[CHKelley]

redfisherman007-- Thanks for pointing that out. I'm running 3.42's and actually wondering what that will do to my power and mileage once I add 305/70/17 tires.

I know my mileage might go down, hoping I don't see any power loss.

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2008 QCSB 6.7L 4X4 2500 6-speed Mineral Gray

[libeachbum]

4.10s and 35's getting 12mpg in town, 16mpg hwy empty. That's taking into account the extra miles from the tires. Diesel today was 4.89

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2007 2500 6.7, 2" level, 35" bfg's