What causes lower control arm bushings to break?
Need year, make,model. Usually its a design problem, GM & some chryslers have a design similar to a hockey puck mounted horizontally with a vertical bushing in the center. These are very common for breaking. If they used a horizontal bushing design (as in the older RWD cars) the lifespan would be much longer as the stress would moreso be riding on steel bushing not the rubber mount part of the bushing (smaller rubber area needed). Eg: 2000 Chev Cavalier/Pontiac Sunfire front control arm bushings, Rear vertical bushings are very common and I have yet to replace a front horizontal bushing.
