Control arms connect your 2015 BMW 335i suspension to the actual frame and manage the motion of the wheels so they are synchronized with the body of your car. Performance control arms are lightweight, and are designed to handle more rough conditions than OE control arms. Aside from better strength for those of you who may off-road or race, performance control arms are also purposeful for those of you just wishing to lower your vehicle. When lowering your vehicle you may run into an issue with rubbing with your OE control arms. Performance control arms also allow for wider wheels to be run. Many manufacturers offer adjustable control arms, and are available in several metal options including aluminum and steel. Sport Compact Warehouse is your premier source for Performance Control Arms. Contact one of our experienced representatives today with any questions you may have.