Alcoa has introduced a new wide base wheel engineered to work with today's low-profile, long haul tires on drive and trailer axles. The new 22.5 by 14-inch wheel spec's include 10 hole, hub piloted mount with 285.75mm bolt circle. In the wide base system, one wide wheel and tire replace a set of dual wheels and tires. At a lean 71 pounds, the Alcoa wide base wheel carried a 12,800 pound maximum load rating.