Pic. 24.1. Metric designation of tire sizes:
1 - tire type:
R - for passenger cars
T - for temporary installation
C - for commercial vehicles
2 - profile width (in millimeters)
185
195
205
and so on
3 - profile height/profile width
70
75
80
4 - type of construction
R - radial
8 - diagonally encircling
D - diagonal
5 - rim diameter (in inches)
13
14
15
2. Since tire pressure greatly affects vehicle handling and tire wear, check tire pressure at least once a month. Also, check the pressure before every long trip (see chapter 1).
3. Wheel rims are subject to replacement in case of deformation, violation of the tightness of tubeless tires on them, disassembly to an oval shape of bolt holes, severe corrosion damage, violation of vertical symmetry, as well as in case of constant spontaneous loosening of wheel nuts. It is not recommended to repair damaged discs using welding or riveting.
4. Tire and wheel balancing is important in terms of overall handling, braking performance and vehicle performance. Unbalanced wheels can adversely affect vehicle handling, driving performance, and tire life. After each installation of the tire on the wheel, the wheel assembly with the tire should be balanced on a special stand.