the real theory on larger tires

[Its a Diesel Punk!!]

hey bros,, im lookin to get 315/70/17,i have 265/70/17 now,,,whats the real theory on larger tires ,,do u lose that much mpg with any kind of drivin or just city??,,,,do you gain mpg on the highway???..i hear some many different theories.....whats the deal or even your experience.....thnx in advance

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07 5.9 auto 4x4 QC LB,,,Smarty Jr POD,,,,Icebox w/ S&B filter,HELL BENT 2" levelin kit,4" homemade str8 piped w/ 6"tip, Recon smoked cab lights,Rat Black H2s w/ 35" Pro Comp Xtreme A/T's....Phantom Gauges,Boost,Pyro,Trans Temp

[Travis A]

i know with mine i lost mpg badly because too much rubber on the road but all i do is city driving so i expected that

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early 04 dodge ram dually auto mods: Full billet DTT tranny, Edge J w/ A, Smarty beta 4.2, AFE stage 2, S&B Intake horn, remote starter, turbo timer, train horn, dipricol Trans, fuel, and rail. silencer ring MIA.

[gl155man]

i dont really know how much my milage decreased because i didnt have my truck very long before the 315's went on but it seems to run a couple of hundred rpm's lower on the highway( about 1700 at 70 mph) which i would think would give you better mileage. i got them at the beggining of winter here in michigan and usually average about 15 mpg, the best per tank i have seen is 18 mpg. i drive about half and half city/highway and pin it all the time so what i get may be different then if i were to drive it easy. hope this helps

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2004.5 QCSB 4x4 Auto

PPE/TST

DTT Trans

[Its a Diesel Punk!!]

anybody else??

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07 5.9 auto 4x4 QC LB,,,Smarty Jr POD,,,,Icebox w/ S&B filter,HELL BENT 2" levelin kit,4" homemade str8 piped w/ 6"tip, Recon smoked cab lights,Rat Black H2s w/ 35" Pro Comp Xtreme A/T's....Phantom Gauges,Boost,Pyro,Trans Temp

[texs4x4]

I lost 4 mpg with 305 x 85 r16, but I had 6 on the ground . My mileage has gone back to 22 with the smaller tires I run now

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2007 Mega Cab 4x4 dually 5.9----stock so far

2001 Dodge 3500 dually---gone but not forgotten

[JasonY]

I lose 5-6mpg in every situation BUT highway with my 315's vs the stock 265's. Depends on my speed on the highway for mileage around 60 its about the same. I also get MUCH better mileage towing with the 265's.

Jason

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2001.5 Ext. Cab Short bed 4X4-315 BFG AT's/AEM HD intake/MBRP 4"/Silencer ring M.I.A/Raptor 100/new VP44/Mag deep trans pan/Edge EZ/RV275's/Quad Commander/Kool-Vue power/heated tow mirrors

[RDyson]

I'm running 285/70/17 Toyo's. They dropped my rpm's about 150--but my mileage stayed the same. I think anything bigger will cost you some mileage.

Randy

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03 SO/Auto, QC/4X4, TST/Smarty, Boost/Fuel/Pyro/Rail Pressure, SPS-62, Goerend, Amsoil 4510, Airdog, Arson Kit, GDP Power-Flo, Grid Eliminator, Fuel Tank Vent Mod, Donaldson 51", Flux 1's, ARP, 613/1171, 13.16@108.2

[rcfreak24]

You gotta think the bigger tires weigh quite a bit more, especially if you get MT tires, all that tread.. But id lose a few MPG to run bigger MT tires any day

[mega07]

if you want to play, you have to pay

06 bd with k&ndrop in 315/70/17 ATs from hummer.