The Cabriolet removes the standard 911's metal top, but adds chassis reinforcement and electric motors, bringing total curb weight to only 51 pounds more than the coupe's. The soft top has been reworked so that when up, its aerodynamics match those of the coupe (drag coefficient is 0.29).

The top stows under its own tonneau cover in a 20-second push-button operation that can be done at up to 31 mph. Porsche claims the sound level, even at racetrack speeds, is nearly as low as the coupe's. The top is equipped with a heated glass rear window and rain channels to manage water flow.

The Carrera 4 is 44 mm wider at the rear fenders than a rear-wheel-drive 911 in order to handle the larger tires for the all-wheel-drive system. The average rear/front torque split is 65/35, with at least 5% of power always sent to the front. The viscous clutch that samples each wheel's traction can instantly transfer an additional 5 to 40% of engine power to the front wheels when conditions call for extra grip.

Also watch for other HOT CARS HOT HUBS:

Ultimate Guide to Porsche 911 Turbo Coupe 2008

Ultimate Guide to Porsche 911Carrera 4 Coupe 2008

Ultimate Guide to Porsche GT3 Coupe 2008

The complete information to All Standard Features of Porsche 911 Carrera 4 Cabriolet 2008 :

Transmission

* 6-Speed Manual Transmission With Overdrive

Steering

* Power Rack and Pinion Variable Assisted Steering * Telescopic Steering Column * Tilt Steering Column

Suspension

* Independent MacPherson Strut Front Suspension With Coil Springs and Gas Charged Shock Absorbers * Independent Multi-Link Rear Suspension With Coil Springs and Gas Charged Shock Absorbers * Front Stabilizer Bar

Electrical

* Front Power Outlet * 12-Volt, 70 Amp/HR Battery * 2100 Watt Alternator * Audio Pre-Wiring

Braking & Traction

* All-Wheel Drive * Electronic Brake Assistance * Traction Control * Porsche Stability Management (PSM(R)) Vehicle Stability Control System Operated Via Engine Power Reduction, ABS and Traction Control * 4-Wheel Anti-Lock Brakes * Front Power 318-mm X 28-mm Vented Disc and Rear Power 299-mm X 24-mm Vented Disc Brakes * Electronic Brake Force Distribution

Safety

* Seat Mounted Front Side Airbags * Passenger Airbag Cutoff Sensor Activated By Weight and Installed Child Seat * Side Head Curtain Airbags * Front Seatbelt Height Adjusters * Driver Airbag With Dual Stage Deployment * Passenger Airbag With Dual Stage Deployment * Front and Rear Crumple Zones * Front and Rear Outboard 3-Point Seatbelts * Side Guard Door Beams * Trunk Anti-Trap Device * Automatic Stainless Steal Safety Rollbar * Pretensioners With Force Limiters

Anti-Theft & Locks

* Power Door Locks With Automatic Locking * Vehicle Anti-Theft Via Alarm, Electric Steering Wheel Lock, Engine Immobilizer and Interior Monitoring

Remote Controls & Remote Releases

* HomeLink(R) Universal Garage Door Opener * Multi-Function Remote Operates Alarm, Door Lock/Unlock and Trunk * Remote Trunk Release

Seats

* Rear Split Folding Bench Seat * Front Dual Reclining Bucket Seats With Adjustable Seat Height * Leather Seats

Storage

* Rear Storage Located Behind Rear Seats * Covered Lower Console Storage Located On Floor * Coinholder * 2 Cupholders Total * Front Dual Door Mounted Storage * Locking Glovebox * Front Dual Seatback Storage Pockets * Front Automatic Locking Storage

Instrumentation

* Trip Computer With Average Speed and Miles To Empty * Service Interval Indicator For Break Wear and Oil Level * Cruise Control * Exterior Temperature Gauge * Tachometer * Tire Pressure Monitor * Rollover Sensor * Digital Clock * Oil Pressure and Oil Temperature Gauges * Porsche Communication Management (PCM) (R) Centralized Control Instrumentation For Audio, Trip Computer and DVD Navigation Aid (If Equipped)

Interior Lighting

* Illuminated Entry Includes Footwell

Exterior Lighting

* Front and Rear Foglights * Automatic Headlights With Automatic Off * Perimeter Lighting Activated Via Remote With .5 Minute Activation * Projector Beam Halogen Headlights

Entertainment, Communication & Navigation

* AM/FM Radio With 235-Watts and 9 Speakers Total; CD Player; MP3 Player * Radio Antenna

Heating, Ventilation & Air Conditioning

* Automatic Climate Control * Interior Pollen Air Filter

Interior, Design, Decor & Floor Covering

* Leather Steering Wheel * Leather Located On Center Floor Console, Shift Knob, Doors and Steering Wheel

Wheels & Tires

* Front SBRP235/40ZR18 and Rear SBRP265/40ZR18 High Performance Tires * Alloy Wheels, Front 18-In. X 8-In. and Rear 18-In. X 11-In. * Inflatable Spare Tire Kit

Windows, Mirrors & Wipers

* Dual Power Adjustable Heated Exterior Rearview Mirrors * Rear Window Wiper * Heated Washer System * Glass Rear Window On Convertible * Power Windows With One-Touch Up and One-Touch Down and Pinch Protection * Front Dual Illuminated Vanity Mirrors * Rear Window Defroster * Front Dual Sunvisors * Variable Intermittent Rain Sensing Windshield Wipers

Exterior, Design, Paint & Finish

* Front and Rear Bumpers * Wind Deflector For Convertibles * Front Air Dam * Rear Air Dam * Retractable Rear Spoiler