Audi А4
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ Exhaust system
+ Cooling system
+ Fuel tank and the fuel pump
+ The air filter and channels всасывания
+ Injection system
+ Coupling
+ Transmission and the main transfer
+ Suspension bracket of wheels and steering
+ Brakes
- Wheels and tyres
Designations of tyres
Rims
Wide-profile tyres and rims
Pressure check in tyres
Check of a condition of tyres
Replacement of wheels
Check of durability of fastening of wheel bolts
Unbalanced wheels
Purchase of new tyres
+ The electrotechnical equipment
+ Ignition system
+ Illumination
+ The alarm equipment
+ Tools and devices
+ Heating and ventilation
+ Body details
+ Salon
Search of malfunctions
Technical characteristics
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Check of a condition of tyres
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- 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 tyres.
- The tyre profile according to the law of 1992 should be depth a minimum of 1,6 mm on all width of a protector.
- But for the sake of safety it is necessary to change tyres at achievement of deterioration of residual width of a profile of 3 mm as wide-profile tyres Audi A4 on wet road emerge earlier, than narrow tyres of cars of old models.
- For deterioration check the eminences which are passing on identical distances across a working surface in grooves of a profile serve. They are designated on sides of tyres by letters TWI (Tread Wear Indicator – an indicator of deterioration of the tyre).
- If these cambers are at one height with protector drawing at the tyre residual depth of 1,6 mm – it is necessary to change tyres urgently.
- On character of deterioration of a profile it is possible to draw some conclusions about which it is written in following section.
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Protector picture
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- The forward tyres erased on an outer side, are not something unusual for Audi. The reason consists in the raised loading on this site of a protector during turn.
- The profile erased on the one hand can specify in wrong balancing of wheels; especially when one tyre is erased obliquely.
- Strong deleting of the middle of a profile can be also a sign too a 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 tyre are erased more strongly, than the profile middle it means that the car long time moved with too low pressure in tyres.
- Uniform washing away in a profile specify in the defective shock-absorber.
- If appears non-uniform истирание in certain places it means that a wheel the tyre cover is unbalanced or damaged.
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Council: If it is necessary to remove a serviceable wheel, for example, for brake check in the beginning it is necessary to note position 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. |
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