The BMW E46 3 Series/M3 Urethane Control Arm Bushing Kit is ready to install as the factory replacement part.
BMW Suspension Bushing Failure Symptoms:
Vehicle has a knocking sound from the area of the front control arms under the vehicle when sharply applying brakes at slow speed. This may be accompanied by slight pulling to one side. At high speed the vehicle may wander or pull to one side while applying brakes.
How to Check the Bushings for Failure:
First, do a road test. Have a friend stand along the vehicle about 15 feet way from the car, while you roll slowly past, then abruptly jab the brake pedal several times.
From the outside of the vehicle you will be able to see the wheel assembly shift back in the wheel housing. In some cases the wheel will move up to 2 inches back, then return when the pedal is released.
Watch the video and see how it is done!
BMW Control Arm Bushing Replacement:
Visually Check the Bushings. With the vehicle safely lifted inspect around the rubber bushing area of the front control arm where the control arm passes through the aluminum ring bracket. If you see the control arms are is mounted drastically off center to one side, this is an indication of the collapsed rubber mount. Any evidence of torn rubber or rust seeping out of the rubber mount area is a sure indication of water that has entered the bushing cavity.
Using a large screw driver or pry bar flex the bushing from side to side. If the bushing move with little or no effort the mount has most likely failed. Watch the bushing relacement video!
How to Replace the Bushings:
Replacing the bushings themselves will require a puller a selection of socket and a automotive hydraulic press. As an upgrade BMP Design offers heavy duty urethane bushing kit that will most likely last the life time of the vehicle in a street application.
To make the installation much easier for the do-it-yourself mechanic we offer complete sets of pre-pressed urethane bushings at pricing lower than the factory complete assemblies.
Select your vehicle: each kit includes both left and right urethane bushings pre-pressed into new aluminum brackets.