Since Modern Tire Dealer began assembling the list of low rolling resistance truck tires that are SmartWay-verified, the number of qualifying tires and brands has increased dramatically. In the last three years, the number of SmartWay-verified truck tires has doubled, from 612 steer, drive, all-position and trailer tires in 2015 to 1,226 truck tires this year. Compared only to last year, the number is up 23.4%. The number of brands on the list has spiked as well over the same three-year period, from 193 to 270. The U.S. Environmental Protection Agency (EPA) says using SmartWay-verified tires can achieve fuel savings of 3% if: All tires are properly inflated, based on the manufacturer’s specifications. They are used on Class 8, line-haul tractor trailers. They are used on the axle positions for which verification is specified. (For tractors equipped with 6x2 drivetrains, verified steer or trailer tires may be used on the tag axle with tire manufacturer approval. Even if low rolling resistance tires are only used on the tractor or trailer, the EPA says there will be incremental fuel savings.