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Audi A4, S4since 2000 of releaseRepair and car operation |
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Audi A4, S4 + Introduction + Governing bodies and receptions of safe operation + Current leaving and service + Engine + Systems of cooling, heating and air conditioner + Power supply systems, release and decrease in toxicity of the fulfilled gases + Systems of electric equipment of the engine + Manual box of gear shifting + Automatic transmission + Coupling, power shafts and differential + Brake system - Suspension bracket and steering Security measures at work + Suspension bracket of forward wheels + Suspension bracket of back wheels - Corners of installation of wheels of the car Corners of installation of wheels of the car - the general information Conditions of check of corners of installation of wheels + Steering and safety cushions + Body + Onboard electric equipment 
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Corners of installation of wheels of the car Corners of installation of wheels of the car - the general information Corners of installation of wheels considerably influence stability of the car, wear of tires and fuel consumption. Values of corners are given in Specifications. Disorder is a corner between the plane of a wheel and a vertical. It can be positive if wheels are inclined outside or negative if wheels are inclined inside. The disorder corner, generally influences uniformity of wear of tires of forward wheels. If disorder of one wheel positive, and another negative, withdraws the car aside at movement on a straight line. The convergence is a projection of a corner between the plane of a wheel and a horizontal axis of the car on the horizontal plane. The positive convergence means that wheels are in front located more closely to each other, than behind at measurement at height of an average point of a wheel. The negative convergence means that wheels in front are at bigger distance from each other, than behind. The cross-section inclination of an axis of turn of a wheel is a corner between an axis of turn of a rotary fist and a vertical, in a projection on a vertical the plane across the car. At the expense of corners of disorder and a cross-section inclination of an axis of turn of a point of a contact of wheels with the road settle down closer to an axis of a rotary fist. It supports so-called «a running in shoulder», driving is easier than subjects. Also blows from roughness of a covering are less transferred to a steering. Longitudinal inclination of an axis of turn of a wheel. The axis concerning which there is a wheel turn, takes place in space so that its lower part is directed forward. Such corner of a longitudinal inclination is called as positive. At positive value of a corner self-return of a wheel to average situation after turn improves.
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