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so doest that mean that if my trip reads 200 miles per tank to multiply by 13 percent then addFrom your screen name it sounds like you have an fj60?
You will notice a power loss. Hill starts require more clutch slipping. Long mtn passes can be tedeous. Flat highways are nicer though. And the truck looks better.
Milage...this is more a function of how you drive it. Changing the engine rpm at a fixed speed doesn't make a lot of difference in fuel economy. What will really kill your milage is that you'll now find it much more pleaseant to drive faster on the freeway. 70 is easy with 33" tires and 3.70 diffs. But driving a brick at 70 will suck fuel like you won't believe.
With 33X9.50, 3.70's, no rack I got 16mpg at 60mph and 13 at 70. Remember that your speedo will read low by ~13% with 33's. You'll also need to do the 13% adjustment for calculating milage.
so doest that mean that if my trip reads 200 miles per tank to multiply by 13 percent then add
sweetIf your trip-meter says 200 miles, then you multiply by 1.13. 200X1.13=226 actual miles.
Note that 13% is the correction on my 60, with my "33" inch tires. I've checked it with GPS. Can also check by comparing known milage to tripmeter reading.
For example, if point A to point B is 185 miles, and your odometer shows 164, then you have a correction factor of 185/164 = 1.13