Thread: Tire pressure & fuel economy

Originally Posted by Basenjiboy

Would the fact that you are running 65/70/16 might have something to do with it as well?
My 2010 Triton factory tyres were 245/65/17 - you are looking at a difference of 4% diameter and 15 revolutions per km (how accurate is the trip computer).

Dash odometer matches closely with GPS speed, not sure what that means re trip computer fuel consumption accuracy which obviously also depends on reported fuel used. Anyway the point is, it’s indicating a gain of about in 20% fuel economy with tires blown up from 29 to 36.