8.5. Tires and wheels

Wheels of Mercedes of the E-class
Information specified on the tire
Important data on tires
Check of pressure in tires
Replacement of a wheel
Check of a condition of tires
Wheel imbalance
Possible malfunctions of tires, their reasons and ways of elimination




Fig. 7.20. Structure of the multilayered tire: 1 – protector; 2 – breker (substrate): reduces resistance to swing; 3 – nylon cord: raises high-speed characteristics of the tire; 4 – metal cord layer: increase course stability when driving; 5 – framework: gives to tires the form and durability; 6 – air-tight inside layer (core): replaces the camera; 7 – sidewall: protects a framework from damages; 8 – board profile: provides stability at the movement and controllability; 9 – onboard ring: provides dense landing on a wheel; 10 – shelf of a rim: serves for good controllability and high course stability


The framework structure, composition of rubber and the difficult drawing of a protector allow to carry modern tires (fig. 7.20) to original hi-tech products which make a significant contribution to passive safety of your car. Tires accept car weight, absorb blows at arrival on roughness of a roadbed and serve for transfer of force at the movement, braking, maneuvering.
The run of the tires installed on forward wheels averages 15 000–35 000 km, on back wheels – 30 000–50 000 km. The latest in seven-eight years of the tire is become useless as the composition of rubber loses the properties over time.