Polyurethane Brake Reaction Bushes
These bushes are a very common failure point on all E36, E46 and Z4’s causing adverse tyre wear, incorrect alignment and your vehicle to track on the motorway.
BMW manufacture these bushes from a rubber compound containing natural products which deteriorate with age. As they age the bush becomes softer and more pliable, resisting the forces placed on it less and less. Therefore allowing more and more movement of suspension components and offering less and less control over the suspension geometry.
This in turn causes accelerated tyre wear, braking instability and poor handling. This is the single biggest reason you can instantly tell the difference driving a three year old car compared to a showroom new one.
At Grosvenor we don’t believe in wasting your money, this is why we no longer fit these inferior, standard rubber BMW bushes that your vehicle was made with, just for them to fail again later down the line. Rather than just fitting replacements, we have devised a solution.
We fit a set of uprated Polyurethane bushes and issue a lifetime guarantee!
Looking at the above picture the standard BMW rubber bush is pictured to the rear, our polyurethane bush is pictured at the front. As you can see, the material and design of the bush is different.
Polyurethane bushes don’t deteriorate like standard rubber bushes, so in 20,000 miles they will feel the same as the day we’ve fitted them.