Bridgestone/Firestone North America announces the new M850 n/Off-Highway Radial tire, which is engineered to promote long tread life for flatbed haulers, dumps and other demanding delivery and hauling jobs to and from construction sites. The M850 radial uses a deep 24/32-inch tread for long original mileage. Since many fleets remove on/off-highway tires because of excessive heel-and-toe wear, the M850 uses a specially designed block/rib tread pattern for long, even wear on a variety of road surfaces.