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

Check of a condition of tires


    Once completely turn each wheel. Alien bodies, for example, small stones, take out a narrow screw-driver, trying thus will not damage a profile of tires. The tire profile according to the law of 1992 should be depth of at least 1,6 mm on all width of a protector. But for the sake of safety it is necessary to change tires at achievement of wear of 3 mm of residual width of a profile as wide-profile tires Audi A4 on the wet road emerge earlier, than narrow tires of cars of old models. For check of wear the eminences passing at identical distances across a working surface in grooves of a profile serve. They are designated on sides of tires by the letters "TWI" (Tread Wear Indicator – an indicator of wear of the tire). If these cambers are at one height with protector drawing, at the tire residual depth of 1,6 mm – it is necessary to change tires urgently. On nature of wear of a profile it is possible to draw some conclusions about which it is written in the following section.

Protector picture


    The forward tires erased on outer side, are not something unusual to Audi. The reason consists in raised load of this site of a protector during turn. The profile erased on the one hand can indicate the wrong balancing of wheels; especially when one tire is erased obliquely. Strong deleting of the middle of a profile can be also a sign of too high pressure. This effect is shown especially strongly on back wheels. Or it arises at too fast driving at which the protector surface is approximated. If both external shoulders of one tire are erased more strongly, than the profile middle, it means that the car a long time moved with too low pressure in tires. Uniform washing away in a profile point to the defective shock-absorber. If there is a non-uniform istiraniye in certain places, it means that the wheel is unbalanced or the tire is damaged.

 Council: If it is necessary to remove a serviceable wheel, for example, for brake check, in the beginning it should be noted the provision of a wheel concerning a nave. Otherwise after installation balancing will be broken. Further it is necessary to pay attention to that the brake disk did not rotate on a wheel nave.