2. Proper Tires (Tread Pattern/Roll Resistance, Size, Inflation)

Tires are another often misunderstood portion of good fuel economy. They are actually one of the most important links between you and the road. Without them, you’d just sit in your driveway making a lot of noise. There are three factors of a tire that can affect your fuel economy, the overall size, tread pattern, and inflation value. Overly Large wheels (both width & diameter) hurt mileage due to their increased weight and roll resistance. Tread patterns are also a factor in economy, as certain patterns create more rolling resistance than others. The last factor is inflation. A tire off by as little as 5 PSI, according to Car and Driver, can reduce fuel economy by one to two percent.