If you want to get really technical with the math, you have to calculate for the actual tire diameter, which changes as the tire wears. A 33" tire is rarely exactly 33", and won't remain at that size throughout it's life. For example, suppose a 33" tire has 15/32 tread when new. When it's worn to 3/32 of tread depth, it will have decreased to a 32 1/4" tire (12/32 worn x 2 sides = 3/4"). The Tire Rack website has all the technical data for every tire it sells including actual width & diameter measurements. It's interesting to look at how many 33" tires aren't really 33" diameter.

After working myself into a frothy mess thinking about this, I've figured you guys are exactly right, and I was exactly opposite of actual on this one.
If you travel an indicated 1 mile in a truck with oversized tires, you have actually traveled further than 1 mile.

Sorry for the fuss, lol!

TripleJack,

For the difference made by swapping from the stock size to 33" tires, my indicated mileage isn't affected that much. Depending on my project load and type, certain tire combos are better than others. I've just put the 33's back on because I'm close to home and working on a sandy fill for the new Folsom Bridge. When I was going to Tahoe everyday, 140 to 170 miles with highway only, lots of high speed downhill corners over the 6,000 foot differential between my office and the project site, it made more sense for the stock tires. I like stopping. Aside from the braking woes (:z:), I'd run the 33's all the time.

Russell

I got 15.5 mph with my 2.6L and 31" muds. I now get 20.5mph with a 4.3L and 32" muds. You figure?

I was told the 2.6 is a old diesel tractor motor design <img src="/forums/images/graemlins/cyclops.gif" alt="" />

I have also read Mitsu fork-lifts.

I got 13 mpg with my 2.6 with 31" tires, 4.22 gears but I was never able to use 5th gear due to the gearing.
I get 17 mpg with the swapped in V8.

Where's the best deal on a webber?

http://www.racetep.com/montero.html
Go through this site and find the application. I ordered from them when they were offering freeshipping. I've seen like 2 Webers on ebay in my time of owning this, but they didn't have the adapter plates. Just order this, its not cheap, but you get EVERYTHING you need w/ easy to follow instructions. I've never worked on a car before and I installed it and tuned it.

TEP and cheap prices generally do not get spoken in the same sentence...