The most noticeable exterior modifications of both all-wheel drive models are their 44 mm (1 ¾ inch) wider flanks, expanded to
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The most noticeable exterior modifications of both all-wheel drive models are their 44 mm (1 ¾ inch) wider flanks, expanded to accommodate the Carrera 4's larger tires. (Photo: Porsche Canada)
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accommodate the Carrera 4's larger 295/35ZR 18 tires, and the Carrera 4S' 305/30 ZR 19 larger rear tires.
The automaker also included its enhanced Porsche Stability Management (PSM) system, optimized for shorter stopping distances and greater control in slippery conditions. PSM, as fitted to the Carrera 4S and 4S Cab, features two additional functions to improve braking performance, the first being preemptive braking design that pre-fills the hydraulic pump in order to reduce the air gap between the pads and the disk and therefore shorten stopping distances before full braking power is applied. This process is especially effective if "the
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| Porsche Active Suspension Management (PASM) lets the driver choose between a comfort-oriented ride and a high-performance track-tuned setup. (Photo: Porsche Canada) |
driver depresses the brake pedal quickly but not forcefully," says Porsche.
The all-wheel drive system is more or less carryover from the 996 C4S, comprised of a multi-disk viscous coupling that transfers between five and forty percent of output to the front wheels when a reduction of traction occurs. Porsche will also make all-wheel drive models available with its new Porsche Active Suspension Management (PASM) system for the first time. Standard on the Carrera 4S, PASM lets the driver choose between a comfort-oriented ride and a high-performance track-tuned setup, optimizing the car's ride/handling equation to make the most of road conditions, and more importantly, a driver's mood swings.
