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The strut together with other vital components that make up the car’s suspension system, such as the springs and shock absorbers, maintains the balance of the car’s movement especially if it passes through bumps and other road features. Maintaining the balance is not an easy task since it requires proper ride height, reduced shock forces effect, appropriate car weight, optimum control of the car’s direction, and firm grip of the tires on the road.
Struts are not universally made. Each vehicle make like the BMW has its own pair of BMW struts assemblies to match the other components of the suspension system. There are varied styles available nowadays but commonly used are spacer bushing, inner plate and center sleeve types. Spacer bushing strut design has its bearing on the center area with unconnected inner brushing. Its main function is to maintain stability of the vehicle from side to side especially if the car is running on bumpy highways. Torn, damaged or cracked rubber bushing must be replaced at once.
The other types, inner plate and center sleeve styles also have the same purpose but they differ in features. The inner plate strut design has an inner plate covered with molded rubber to prevent the strut piston rod from pushing through the upper or lower surface plate in case the rubber core failed to do its duty. It is difficult to determine if something is wrong with the inner rubber bushing because of the upper and lower service plates that covers the rubber area.
The center sleeve design on the other hand is made up of a center sleeve on the rubber bushing for better motion control. Like the inner plate strut, upper and lower retainer washers are also available to prevent contact between the strut rod and the strut mount. Replacement of the bearing and the strut mount is done separately since they are not included as one component unlike the other mentioned types.
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Featured
BMW Struts
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