So I just returned from my first long range trip since I've put the 35s on. Now I know everyone is saying that milage and power suck considerably with larger tires and stock gearing, but after doing the calculations, I will say that it is not THAT bad.

Over a 312 mile round trip (40% country roads & 60% freeway) over varying elevations, hills and flats, I managed to get 14.14 MPG. (calculated manually, filling up prior and right after the trip, all on one tank)

As far as the power, yeah, it's a dog, but after all, it is a truck and I've got a crotch rocket for satisfying my acceleration needs.

I was pleasantly surprised.

 

Around town with alot of stopping and going your mileage will probably start to suck. Deffinetly leave your Over drive off unless you're going about 60mph or faster constantly.

On the highway, the high gears with the big tires your mileage will be decent because you're just rolling along.

Offroad you'll probably always want to be on 4-lo with that setup.

 

Not to mention many here think it causes excess wear on the tranny, those big of tires and those high gears.

 

Some 4.88 gears would be more suited to your application.

 

I didn't realize 3.55 was considered a "high gear ratio".

 

Would you care to justify that? What is that based on? It's obvious that in stop and go the milage would be worse, as you've stated above, but I don't exactly agree with the "rolling around" statement either. Last time I checked, my truck didn't roll up any hills. Maybe if I was driving on a frozen lake or something, I would agree with that one.

 

Did you factor in the difference the larger tires make for you mileage calculations? It's pretty substantial.

 

what?

 

When I went to 31" tires my odometer was off by 4%. I would guess with 35" tires you are probably off by close to 10%.

 

Jumping up tire sizes will make the speedometer read incorrectly (slower) than what you are really traveling, therefor it will also read less miles than you actually drive.

If he didn't factor in the difference, than he probably got more like 15 or 16 MPG, and I highly doubt that with those tires/gears. I have never got above 13.5 MPG, EVER. And I bought my truck brand new (although it does have 3.92 gears.