А silent block or bushing is an integral part of the suspension. It is a link between other functional units. The main purpose is to soften vibrations of the car body when driving and ensure a smooth ride.
Silent blocks are made from rubber or polyurethane. The first material is used in the production of original parts, the second – for alternative options. They consist of an inner sleeve, where a hole is provided for a bolted connection, and an outer ring. These elements are made of metal, and the space between them is filled with rubber or polyurethane.
When is it rational to use polyurethane bushings?
Such parts are mainly installed on older model cars. Due to long-term use, their depreciation deteriorates. With the help of polyurethane bushings it can be restored, making the suspension more energy-intensive and elastic.
After installation, the suspension becomes more elastic. This is the main reason for using such parts on vehicles whose performance has been degraded due to constant use in adverse road conditions.
This option is also suitable for drivers who practice an aggressive driving style. Control accuracy improves and the machine becomes more responsive. Therefore, polyurethane is also used on vehicles used for amateur sports competitions. Their behavior becomes more predictable.
You can also install polyurethane silent blocks if you do not have the budget to purchase original parts. They cost much less, so there are savings on suspension repairs.
The wear resistance of such parts is average. This is worth considering. Therefore, it is recommended to change them at least every 100,000 km, or even more often if driving on poor-quality road surfaces.
There are many advantages of polyurethane silent blocks. Therefore, they are preferred by experienced drivers who value good handling and long service life in adverse conditions.