Audi A4

since 1994 of release

Repair and car operation

A4 Audi
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ exhaust System
+ cooling System
+ Fuel tank and fuel pump
+ Air filter and absorption channels
+ injection System
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
- Wheels and tires
   Designations of tires
   Wide-profile tires and rims
   Pressure check in tires
   Check of a condition of tires
   Replacement of wheels
   Check of durability of fastening of wheel bolts
   Unbalanced wheels
   Purchase of new tires
+ Electrotechnical equipment
+ ignition System
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics

Designations of tires

Under existing international agreements the size of tires is given in millimeters or, as in our case, in millimeters and in inches. Designations of 195/65 R 15 91 H or 205/60 R 15 90 V mean the following:

195 or 205: width of tires in not loaded condition in mm.

65, 60, 55: ratio of height of tires and their width = 65: 100, 60: 100 or 55: 100. Old radial tires which are not put any more on Audi A4, have a ratio of height of tires and their width 80: 100. The height and width ratio in tires with designation 65, 60 and 55 is respectively lower.

  1. Max. loading
  2. внутр. pressure
  3. layers
  4. lateral wall
  5. protector
  6. DOT* check
  7. code of the manufacturer
  8. code of the size of the tire
  9. code such as the tire (on a choice, intra factory)
  10. week of manufacturing
  11. year
  12. the radial
  13. the tubeless
  14. nominal width
  15. ratio of cross-section section
  16. the radial
  17. diameter of a rim
  18. index of loading or characteristic
  19. index of speed
  20. ECE* quality mark (an admission sign with a country code, for example, 3 – Italy)
  21. admission number

* DOT – transport Department
* ECE – EEK – the European economic commission

All symbols which you will find on lateral face of the tire, are explained here.

R: designation of a design of the tire as radial.
15: internal diameter of the tire in inches (”).
90 or 91: designation of bearing ability.
Q: admissible maximum speed to 160 km/h – a class of speed for ordinary tires M + S.
S: the maximum speed to 180 km/h.
T: the maximum speed to 190 km/h – the maximum speed for tires M + S.
Н: to 210 km/h.
V: to 240 km/h.
W: to 270 km/h.
Z: over 270 km/h.