Red Dog

I get 14.5-15.5 MPG with 35’s and an automatic transmission and 4.88 gears. I think it is an acceptable MPG. Before I changed the gears it was much worse.

roadking54

I'm similar....14-16.5 mpg, unlimited auto with 35's, 5.13's, superchip, CAI, and exhaust.

12-14 mpg pre gears with O/D off.

JEP THNG

My 315/70 R 17 GY Duratracs measured right at 33.5"

jknit

See I have a 6 speed w the mountain edition gears, I'm trying to figure out the weight diff between a 35 inch nitto trail grappler and the 33 inch open country hoping since the toyo is such a heavy tire the weight increase won't be too too bad, I read a gear change in a standard doesn't effect mileage much so it may not be worth it, insight?

CrazyShadow

I did a litle research on weight of most popular 37'' tires


Type______________Size_____________Weight___Load Range__Price(each)
Irok Radial_________37x12.5 R17_________81_______E_________400
Interco SSR________37x12.5 R17_________90_______D_________385
BF Krawler_________37x12.5 R17_________87_______C_________485
BF Mud KM2________37x12.5 R17_________72_______D_________390
MTR Kevlar_________37x12.5 R17________74________D________385
Toyo Open Country__37x13.5 R17________93________E_________420
Nitto Mud Grappler___37x13.5 R17________90________E_________420
ProComp Xterrain____37x12.5 R17________83_______D_________380
ProComp Xtreme Mud_37x12.5 R17________83_______D_________390
Mickey MTZ_________37x12.5 R17________83_______D_________435

I was not sure about the KM2, some sites say 71 to 73 lbs

Toyos and Mud grappler are the heaviest, since they are 13.5 wide

jenly8

I run the Toyo 35 m/t with 5.13 gears and I get 12-13mpg. I think the rotating mass of these heavy tires is killer

jknit

91 lbs holy bleep

adrom

toyo's are HEAVY. my buddy has them on his truck and you can tell the difference from the tires he had, same size

07JKDakotaEd

Runnin the same setup and getting the same mpg, but the tires are bulletproof and when I go to 37s these will be the tires I get

jknit

i found somewhere saying that the 35" Trail Grappler was 79 lbs and the Toyo open country 33.5" was 86 lbs...i would think at a 7 lb difference per tire, I shouldn't see much of any of a diff in mileage changing to the 35?