| The lift will hurt the mpg on the highway too! The higher up the truck is the more drag there will be on it because no matter how tall your tires are, air doesn't flow under the truck very well at all. For better mpg you can also re gear your differentials to take into account your taller tires and get back to your stock final drive ratio. This won't solve all your problems either because the taller tires have more mass to get moving, and more rolling resistance once moving. If you want mpg slamm it & put skinnies on it. |