im gonna get AT 33s when i get the money. will i notice any mpg loss or anything like that? my stock tire is a goodyear wrangler mtr 245 75 16. also what if i went with a 35 inch tire. will i loose mpgs then and how many est.

 

i get about the same with 32's than my old stock units
just got to remember to recalibrate the speedo to get the correct mileage

 

stock setup: 29" tires, 3.73 gears, 4.0L 4x4 18.5MPG

first got 33's: 33" TSL's 3.73 gears, 13mpg

Now: 33's 4.56 gears 15mpg

 

yeah i have 285/75/16 and my gas mileage went way down prob 13mpg

 

im getting 15.63 mpgs consistantly with my 245 75 16s. i have stock gearing. i dont no what gears im running. what should i get mpgs whise?

 

You have a 03 FX4 so id bet you have 4.10s


I currently get ~15mpg(50/50 street/highway) with my 32s which is less then 1mpg worse then stock. So long as you drive the same you will probably notice a drop of 1 mpg with your 4.10s with 33s. With 35s you're probably going to loose ~3mpg

 

ok i just didnt want to drop down to like 10 mpgs

 

im getting 23 mpg now with my 33's... i was getting 19 on stock tires

 

how is that possible?

 

I went from 18 mpg to 16 mpg on 285/75s with 4.10s.

 

????? please do tell!!

 

I get better gas mileage with my 33s too.

I do a fair amount of highway driving. When you put bigger tires on your truck its like gearing it higher. I run about 200 - 300 RPMs less when in overdrive.

 

thats how... and my driving habits have changed as i have gotten older... i dont go over 70 and thats a huge MPG boost... i also dont floor it at a green light and if i see the light ahead is going to change i coast

 

Is this mileage standard for you OHC / "IFS" guys? I stayed at normal @ 21 mpg when I threw on the 33x12.5015 from 225/75/14 on highway, and noticed about 2-3 mpg drop in city (I drive like a bat out of Hell). After the regearing, I now get about 21-22 mpg on highway, and about 20-21 in city.

I wish I have 4.56 though...

 

You're only 2wd pete... that extra few hundred pounds of 4x4 stuff and more moving parts slows us 4x4 guys down a bit.

 

Yea, *shrug* That's definitely true...but Mr. Special & LayingFrame are both 2WD & getting mid teens...

 

People, Please..... for the Love of god! Just use Inches, considering that all Off-Road Tires are referred to in inches.

Thank You - You may carry on now!

 

I just got 17.95 mpg gallon on my 285/75/16.

I was really happy when I say those numbers. I just changed my fuel filter, sea foamed, and used little to almost no A/C.

It makes a difference.

 

I got about 15 or so with 4.10's Did get 18 or so.

 

i get better w/ my 32s

 

what gears would they be running as if i were running 33s?

 

huh? lol. I am runnig 4.10 with 33s. So I do not know the math. It may be ecevlant to 4.00 I have no clue really

 

15.6 mostly highway with my 33s with 3.73 gears, i never recalibrated my speedo its dead on

 

i also get better with 33's and 4.10ls when i drive good, 13-15mpg stock and with 33's i get 18+ when all sensors are cleaned and working good.