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I'm about to get new rims and tires, and am trying to decide between BFG M/T 32's or 33's. What will the difference be if I run the 32's on my gas mileage and power loss. What about 33's. I know that I should re-gear, especially with the 33's, but until I do, what changes will I see. I'm running stock 31's now. It's my dd, but I do quite a bit off road and have to find some kind of middle ground. :rolleyes: Thanks!
 

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im running 32's and im not regeared, i cant tell a difference from the 30's i ran, i dont think 33's will be that much different, what gears does your truck have now
i think its on the inside door panel
 

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Just stock gears for my truck (see signature). I would assume the the engine would have to work quite a bit harder to spin 2" taller, 2.5" wider tires, times 4 wheels. Harder work with same gears should decrease engine efficiency and power.
 

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You'll notice a decrease in fuel economy and power...give it a try, you might noot thinks it's bad enough to regear.
 

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i'm running 32" BFG M/Ts and i dont notice a difference except for a 2 mpg drop but the power difference is not noticable
 

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Went from 265/70-16's to a set of 32's and lost about 2mpg. It is a little slower but it wasn't exactly a rocket ship before. I think you will find a 32 won't hurt you bad enough to regear. 33's may be a different story.
 

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Chirp, chirp
 

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i wouldnt bother regearing with 32's...with the V6 you'll be fine. i noticed a very slight loss of power and a slight loss of mpg, but not enough to fork out the cash for new gears. i would definately regear if i got 33's
 

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YoTRacer158 said:
i wouldnt bother regearing with 32's...with the V6 you'll be fine. i noticed a very slight loss of power and a slight loss of mpg, but not enough to fork out the cash for new gears. i would definately regear if i got 33's
I tend to agree. I have 32's and the 3.91 gears (non-TRD truck) and it's definitely liveable. However, I never got to drive the truck with the stock tires/wheels and I bought it with 31s on it, so I don't know how much of a loss I'm really living with. I can say that I could feel some difference when I moved up to 32s and I lost a couple mpg (lift at same time).

I'm planning to gear it to 4.56 and add a locker (or 2) whenever I get the money, but that'll probably be a while.
 

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Peanut Butter said:
I'm about to get new rims and tires, and am trying to decide between BFG M/T 32's or 33's. What will the difference be if I run the 32's on my gas mileage and power loss. What about 33's. I know that I should re-gear, especially with the 33's, but until I do, what changes will I see. I'm running stock 31's now. It's my dd, but I do quite a bit off road and have to find some kind of middle ground. :rolleyes: Thanks!
It all depends on what you plan on doing with your truck. If you tow/haul and significant weight you'll need to regear. If any power loss and mpg loss will drive you nuts you'll need to regear.
With the TRD you have 4.10s so it is managable.

if you go with 33s and do regear, go to 4.56s for just slightly better than stock w/31s or 4.88s for awesome offroading performance.
 

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Discussion Starter #12
Chirp, chirp
 
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