All Porsche 911 Carrera models are equipped with power-assisted four-wheel disc brakes. A brake booster power-assists a dual-circuit master cylinder. A vacuum boost system is used in all models.
Dual-piston calipers act on vented front rotors and rear rotors. A brake pad wear sensor for each wheel indicates when pads need replacement. The dual-drum parking brake is integrated with the rear brake rotors.
^ In order to prevent rear wheel lock-up and loss of steering control during hard braking, hydraulic pressure to the rear calipers is reduced by a rear brake pressure regulator (arrow) installed in the front-to-rear brake line in the luggage compartment, under a small cover.
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