The activities of any company focused on making a profit. Profit is the result of deliberate management actions, coordinated teamwork, effective use of various resources. Efficiency use of transport depends largely on the readiness of the park and its equipment. Tires play a big role here, given the cost of idle vehicles. Tire life is directly dependent on compliance operation, the road conditions. In order to “extend the life of the tire is above all necessary to choose the right type of protector, given the operating conditions. There are several types of protectors, each of which has its purpose. Typically, the name of the type of protector in accordance with international standards, laid in the model name is indicated on the tire or the lateral surface of the tire. Advised to refer to classification of large tires on the international standard TRA: Digger (trucks, transportation land): Ribbed For a front wheel dump trucks E-2-road to scrapers used on sand soils and light soils, where the important cohesive force with the ground. E-3 for rock dump trucks and scrapers used in environments where important resistance to environmental damage and wear. E-4 Deep, for rock ground for dumpers and scrapers used in environments where important resistance to environmental damage and wear. E-7-terrain for multi-scrapers, which are stronger than the E3 and used in conditions, which require only a cross. Grader: G-1 Ribbed For the front wheels graders. G-2-road to the rear wheels of motor graders are used in environments where important cohesive force with the ground.