The brake calipers hold the brake pads in place and use hydraulic pressure to press the pads against the rotors when the brakes are applied. The bolts that hold the rear calipers in place may not have been sufficiently tightened during vehicle assembly. If the mounting bolts were to come loose, the caliper could detach from the vehicle resulting in loss of braking ability. The loose caliper could also strike the wheel, causing sudden deflation of a tire. Either of these situations may increase the risk of a crash. Land Rover dealers will inspect and tighten the rear brake caliper mounting bolts to correct this concern.