Quote:
Originally Posted by liljlandon
Thats factored in, the odo is off by 33%, so if i drive 20 on the odo im actually driving around 30. So i multiply my trip meter by 1.33 to get my actual mileage and divide by my gallons
usually i get 270-300ish off of 12-13gallons.
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I don't think your odometer is off by 33%. By my calculations it's off by 10.7% so you should multiply your odometer mileage by 1.107 to get your actual mileage.
The above assumes exactly 31" OD tires vs. exactly factory 28" OD tires with no other changes to the vehicle.
Or have you checked your odometer with a GPS and know for a fact that it's 33% off? (Which means that something else has been changed, like gears, or your speedometer doesn't work properly.)