lineforeman99
Active Member
- Location
- Montrose CO
How much power will I lose if I go to a 265 75 16 in stead of the 245's that are on the truck now?
Chevy Duramax
- Thread starter lineforeman99
- Start date
Gary T
Registered User
- Location
- Draper, Utah
I have 265's on my 06 DMax. I have the Torsion bars twiked up a bit and it will still rub lightly sometimes on tight turnns. Didn't notice any power loss, or change in braking.
gripguru
Nate Davidson
- Location
- Meridian ID
I am shopping for 285s for mine, I have just over 9K on an '07. I think that you will really like that truck. As with any vehicle watch the temps, but especially while towing uphill.
I've got 315/85 on mine I still get 20mpg empty, but it's hard to say with the added power stuff, I can tell you I had it turned all the way up and had to turn it back down, couln't keep the tires from spinning even with a trailer on (and w/the eaton). I have a heavy foot, but it was rediculous.
- Location
- Bountiful, land of rocks
That certainly puts my Powerjoke to shame... Since I put my Toyos on, I don't slip a tire much at all.
- Location
- Grand Junction, CO
I just calculated the mileage of my Dodge CTD a few hours ago. After filling up in Tooele, driving to Elko, NV, more freeway driving to/from the job site, (most of the freeway driving was over 80 MPH) and by hand-calculating my mileage, I got 19.7 MPG.
It's not your truck, its the Toyos, they just hook up too well. Brother and i have about the same mods done to our Dmaxs, except that he runs Nittos and i run Toyos, and he can spin them easier then i can!
1\4elliptic toy
shenanigans!
- Location
- The Dark Side
I'm running 36 inch swampers on my 07 duramax, I still get 18ish mpg at over 80 mph I drive to phoenix at least twice a month and to vegas every week.
Samuraiman
Sand Pile
- Location
- St George Utah
My experience in the shop with the big diesel trucks. For starters the Duramax has the cheapest filters when servicing. This includes tranny, oil, fuel, air. My 01 duramax has 167000 miles and has only had a water pump and a warranty on a set of injectors. The brakes are still original, I guess that could be the trans or mostly the driver. It has hauled hay, 3 or more cars on a car hauler etc.. It has no power mods intake or anything and pulls great. Sometimes when I pull a big load I will stick the hypertech program in for the trip. Then take it out. I seem to get around 16-18 mpg and once as high as 22mpg. I have never printed a fuel chart and did a hard copy. Hauling a big to huge load one time from St George to Loa I got about 12 that is the worst it has ever gotten. I am running the 285-75-16 cooper atr tire's, and for some reason I am the only one that don't have tire rub. My torsion bars etc are stock height so I don't know what the deal is. Anywho. I love the truck over any of the others.
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MR.CJ-7
Your Realtor
- Location
- Woods Cross, UT
Are you running the 285's on the stock rims or did you go aftermarket?
I have an '07 classic with only 3K on it and I'm ready to junk the ugly 245's .
I am still waiting to see the mileage everyone else talks about. I routinely see 15 maybe 15.5 in a city/highway mix. The few times I have pulled my 8500# TT I only see 9.5 or 10 MPG. Hopefully this goes up a bit with break in.
I too was skeptical to buy an auto for a tow rig. I had a 6spd stroker, but after towing with the allison I can't think of any reason I would choose a manual over this auto.
Let me say I absolutely love the "cruise grade brake" feature. My first try was on Parley's. Luckily there was very little traffic. I set cruise at 65ish when I jumped off Hwy 40. I left it alone until I hit traffic in SLC at the mouth of the canyon. I didn't have to touch the brakes or accelerator the whole way and never went below 65 on the uphill side or over 70 on the downhill side.
I have an '07 classic with only 3K on it and I'm ready to junk the ugly 245's .
I am still waiting to see the mileage everyone else talks about. I routinely see 15 maybe 15.5 in a city/highway mix. The few times I have pulled my 8500# TT I only see 9.5 or 10 MPG. Hopefully this goes up a bit with break in.
I too was skeptical to buy an auto for a tow rig. I had a 6spd stroker, but after towing with the allison I can't think of any reason I would choose a manual over this auto.
Let me say I absolutely love the "cruise grade brake" feature. My first try was on Parley's. Luckily there was very little traffic. I set cruise at 65ish when I jumped off Hwy 40. I left it alone until I hit traffic in SLC at the mouth of the canyon. I didn't have to touch the brakes or accelerator the whole way and never went below 65 on the uphill side or over 70 on the downhill side.
red
Active Member
- Location
- Eagle Mountain
your fuel economy will go up once your done with the breakin on your duramax.
the manual tranny was available through 06 models but not very common, 07+ gm decided there wasnt enough demand for it anymore so they cut the zf6 from the lineup. the only auto i would ever recommend to a vehicle that tows frequently is the allison, avoid the 06 and older dodge auto's unless you like being in a tranny shop and the ford auto if your towing over 15k pounds on a regular basis.
problem with 285's is alot of people will get aftermarket rims with a little more backspacing putting the inside edge of the tire closer to the frame/body.
i'm not sure whats up with the brakes on the gm's, most of the people i know with them are reaching about 200k miles before they should replace their brake pads.
the manual tranny was available through 06 models but not very common, 07+ gm decided there wasnt enough demand for it anymore so they cut the zf6 from the lineup. the only auto i would ever recommend to a vehicle that tows frequently is the allison, avoid the 06 and older dodge auto's unless you like being in a tranny shop and the ford auto if your towing over 15k pounds on a regular basis.
problem with 285's is alot of people will get aftermarket rims with a little more backspacing putting the inside edge of the tire closer to the frame/body.
i'm not sure whats up with the brakes on the gm's, most of the people i know with them are reaching about 200k miles before they should replace their brake pads.
Elkhunter96
Registered User
- Location
- Hooper
I run 285 70 17 on my 06 d-max on some stock wheels and they do not rub. I have a set of aftermarket wheels with 285 75 16 tires and they do rub. It is all about the back spacing, that is why I put the stock ones back on.
I ended up with 15 mpg pulling my jeep to moab and back, but that is with mud tires and breaking in the new AFE stage II and Silverline exhaust. Unloaded and on a flat freeway I get 19-20.
I ended up with 15 mpg pulling my jeep to moab and back, but that is with mud tires and breaking in the new AFE stage II and Silverline exhaust. Unloaded and on a flat freeway I get 19-20.
redrockcrawler
earth rover 2012
- Location
- hooper
i pull a 44 ft enclosed trailer fully loaded it is about 18000#-20000# my 03 duramax pulls it great i would recommend one for pulling also i get 12.5 mpg pulling that trailer
Elkhunter96
Registered User
- Location
- Hooper
My dad in his 04 d-max gets around 14 when he is pulling triple on a 30ft fifth wheel and a 14ft four wheeler trailer. He is runing 265 michelin road tires with a silverline 4 inch exhaust and a AFE stage II intake.
redrockcrawler
earth rover 2012
- Location
- hooper
down an back bitchLiar!!!!
redrockcrawler
earth rover 2012
- Location
- hooper
I'm always working!! Come get your tranny!!