Posted by Traveler on March 06, 19100 at 23:27:28:
In Reply to: Tire sizes and gas milage posted by KSHEEHAN on March 06, 19100 at 09:04:45:
The taller tires help your mileage at slow speeds because of the gear ratio advantage and hurt your mileage at high speeds because you raise the truck and increase wind resistance. Somewhere there is a break even point; 65 MPH ?