Great points by everyone and the consensus is it will take a big hit on MPG.
Most of it in the city with stop and go. But the highway will suffer also like most said with extra resistance and the change to the airflow of the vehicle being higher. The tire weight has less impact since your up to speed at that point.
Most of it in the city with stop and go. But the highway will suffer also like most said with extra resistance and the change to the airflow of the vehicle being higher. The tire weight has less impact since your up to speed at that point.