has anyone upgraded their tires to 35s on the 6.2 gas? currently have 33s and want to get 35s sitting on fuel wheels. What was your before and after fuel economy. thanks

 

I'm in the low teens overall on 35's with 4.30 gears....I don't drive it real hard or hammer on it much....It had what looked like 33's on it when I bought the truck used, swapped to 35's on Methods shortly after I brought it home..Didn't really pay attention to the mileage before the swap..

Looking at going even bigger in the spring..

 

Well I just went from stock 33's to some nice Goodyear duratrac's. way more rubber on them and has left me wanting little more power with the 6.2! as for gas lost a few miles in town but not on the highway. Popped a K&N air filter in and seemed to bring a little get up and go. I have a heavy foot so hard for me to talk about millage. Just wanted to add the thought about lost of power with heaver tires!

 

Was expecting to lose a little power. I wonder how much is sacrificed when towing

 

I haven't got the chance to do any towing yet as I've just recently got this 2013. I only have about a month of driving to go off of but with 3.73s, I've lost about 1mpg going from stock all-season Michelin's on factory 18s to these 35" Cooper Discoverer STTs on 20x10 XDs.

I haven't done anything to the 6.2L yet aside from a Flowmaster Super44 series muffler. I'm averaging around 11 mpg combined but then again this is way more powerful than my old pickup with 5.4L so I kinda have a hard time keeping my foot out of it

 

I went from 33's on 18s factory to 35's on 20's. Lost about 1 mpg. I love the look and feel much better. I still feel enough power when needed. I too have not towed with them yet. Illinois salt and grime right now! FYI i have 3.73 gears.

 

Have you guys corrected your speedometers?

 

Not yet, will address that with tuning module. My list of wants vs needs just keeps growing.....

 

You will probably see that 1mpg loss come back then. Becuase the truck is moving faster then the computer thinks it is. May even increase in fuel economy. happened to me on my last truck

 

What gear ratio do you have currently? If you want to maintain the factory power levels you may have to change this, also if you want to increase the in town MPG's.

 

Hate the salt and grime!!! Love the snow but defiantly don't miss that from NY, especially now that my truck will live a lot longer and not get abused by rust.

 

you shouldn't see too much of a loss in mpg. you should be able to regain it and maybe more with a tuner and maybe a CAI or K&N filter

 

The factory 20" wheels have 34" tires (275/65/20)

 

I have not corrected the speedo-i have the same wants/needs list!!!

 

Until you correct the speedo you don't know what the milage is and it will look lower than what it is. Like mentioned you can almost get 35s stock so they really aren't a stretch.