Audi 100/A6

1990-1997 of release

Repair and car operation

14.17.2. Shinnye whims

THE GENERAL DATA

While in service the car there is a deterioration of a protector of a tyre cover which can be divided on normal and abnormal. Deterioration is considered normal if the small resource of a protector is caused not by presence of any mechanical defects in the given vehicle, and grows out of service conditions.

Normal deterioration can be caused:

      – A condition, a profile and road planning (on a mountain streamer deterioration twice above, than in normal conditions);
      – In the speed and rigidity of a manner of driving;
      – An ambient temperature and a climate;
      – Capacity of the engine;
      – Compatibility of type of the tyre with service conditions.

Abnormally fast deterioration is caused by defect or deviations from norm in a vehicle suspension bracket, system of a steering or brakes. This type of deterioration has an inclination passing on the one hand another. Abnormally fast deterioration is shown in a kind соскобленности which is looked through within all protector, and also in shape more or less appreciable wavy deterioration appearing on one of end faces протекторного of the block. It is caused by that wheel moving does not coincide with a plane of its rotation. If there was a non-uniform deterioration of the tyre, it is necessary to check up the following:

      – Pressure in tyres;
      – Correctness of installation of wheels;
      – Adjustment, including the back bridge;
      – Balancing;
      – To check up a mechanical condition of the car: bearings, plugs, springs, the ends of routeing draughts, pins.

The tyre with unilateral cone-shaped deterioration on an equal flat surface slides with withdrawal as it happens when on a plane the cone slides. Only symmetry of tyres on the right and at the left (let even strongly worn out) relieves of such withdrawal. In what an error? That replacement of one wheel by another was made without any system.

If wheels on the car did not interchange the position, the deterioration picture remains approximately symmetric concerning a median plane of a body, and the car is quite comprehensible heads.

The majority of automobile instructions contains instructions on in what terms and in what order it is necessary to interchange the position of wheels that their deterioration remained uniform enough. Tyres with the directed drawing of a protector (having on sidewall to an arrow "a rotation direction") demand still большего attention. Here the replacement scheme under the instruction is absolutely unacceptable – it is possible to interchange the position of only forward and back wheels of one party (left, right). Otherwise tyres it should in addition перебортировать – who begins to do it?

As you can see, even use of identical tyres not always guarantees normal behaviour of the car on road. And different in a standard size, a design, protector drawing and so on? In these cases you can face various "unexpectedness".

We already repeatedly wrote about the factors having adverse influence on a tyre cover, and also how to prolong a life to the tyres. Now possibility personally to be convinced of it is given to you.

Run on the lowered wheel

– Fast leak of air (cuts, wrong repair or installation);       – Long driving after a puncture;       – Very low pressure in the tyre

Non-uniform deterioration (unilateral deterioration)

– Wrong adjustment of wheels;       – Untimely shift of wheels

Non-uniform deterioration (deterioration a stain)

– Sharp dispersal-braking;       – Faulty brake system;       – A faulty suspension bracket;       – Excessive adjustment of a disk and the tyre;       – Untimely shift of wheels

Non-uniform deterioration (edge deterioration)

– Untimely shift of wheels;       – A faulty suspension bracket;       – Sharp dispersal-braking;       – Wrong pressure in the tyre and / or an excessive overload

Отслоение

– Wrong pressure in the tyre and / or an excessive overload;       – Excessively high speed

Cut протекторной parts

– External cuts (from sharp stones, nails, bolts, glass Etc.);       – Careless driving

Cut-otsloenie протекторной parts

– отслоение between протекторной rubber and a cord брейкеров weakens because of external cuts, grooves from stones;       – An elevated pressure in the tyre and an overload

Cut-rupture

– Rupture because of external cuts or blows;       – An elevated pressure in the tyre and an overload;       – Careless driving on high speed

Cuts from a disk

– A faulty disk;       – An inappropriate disk on the size

Attrition from a disk

– A faulty disk;       – An inappropriate disk on the size;      – Insufficient pressure in the tyre and an overload;      – Sharp or abnormal braking, dispersal, performance of turns;      – Untimely shift of wheels

Ozone cracks

– Wrong storage, ozone influence at storage on the sun or close теплоэлектрогенераторов;       – Long storage;       – Excessive deformation боковины because of an overload or low pressure

Lateral cut

– External cuts (from borders, sharp stones);       – Careless driving;       – Excessive deformation боковины

"Hernia"

– A swelling on sidewall (the localised blow causing отслоение Between elements боковины or a skeleton);       – Careless driving