Tire diameter and width matter wheel size not so much.
If you buy narrow tires mileage will go up, tires that have a diameter that keeps the stock gearing help as well.
Wide sticky tires = less gas mileage..
Tires that use higher pressure tend to get better mileage as well.
Dave __________________
Dave - PDX
1995 318ti - Active Black and Tan.
2005 330xi - Mtech 1 - 6spd - Orient Blue/Black |