Quote:
Originally Posted by CUTiger
If your odometer/speedometer has not be recalibrated for the larger tire size you have to find what percentage larger the new tire is from the original. (just divide the new tire size by the old) My 31s were 19% bigger then my oems so I multiplied my tripometer reading by 1.19 to find how many miles I had actually gone.
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Never did well in math....OEM is 15" New is 16". Divide 16 by 15 = 1.0666...... 1.06% ?
Trip is 300 miles X 1.06 = 318 divided by 18 gallons = 17.66 mpg
Does that look right?
Thanks for the math lesson
__________________
jighead <:}>>><
**2000 XLT Ext Cab / Auto / 3.0 Flex / K&N Air /
Dual FlowMaster / Throttle Body / Cruise
**1996 XL Std Cab / 5 Spd / 2.3 / may sell
**1998 XLT ext cab / Auto / 4.0 / sold
