2008 Porsche 911 Turbo Cabriolet

The Porsche 911 Turbo Cabriolet carries on a twenty year Porsche tradition of offering a soft-top version of its flagship sportscar. Firstly, the 911 Turbo Cabriolet offers the driving performance of a high-powered sports car whilst still providing open-roofed driving pleasure. Secondly, compared to its competition, the open 2+2 seater offers economical fuel consumption, thanks to its lightweight design, outstanding aerodynamics and advanced engine technology.

Like the 911 Turbo Coupe, the Cabriolet is powered by a 3.6-liter six-cylinder ‘boxer’ engine with twin turbochargers and Variable Turbine Geometry (VTG). The powerplant generates 480 bhp and 460 lb-ft of torque at 1950 rpm. With the optional “Sport Chrono Turbo Package”, which includes an overboost function, up to 500 lb-ft is available under acceleration. The manual transmission version can accelerate from 0 to 60 mph in just 3.7 seconds. With the Tiptronic S transmission this time falls to 3.5 seconds. Both versions can reach speeds of up to 193 mph. Fuel consumption for the 911 Turbo Cabriolet is 21.9 miles per gallon (12.9 liters per 100 kilometers) – an exemplary value for this competitive vehicle segment.

The open version of the 911 Turbo only weighs 150 lbs more than the Coupe, the difference accounted for by the reinforcement of the convertible body and automatic extendable rollover protection behind the rear seats. The light, three-layer soft-top, which can be completely automatically opened or closed in 20 seconds, also contributes to a low center of gravity.

Together with the chassis tuned to convertible-specific needs, which includes Porsche Active Suspension Management (PASM) as standard equipment, the new 911 Turbo Cabriolet offers the sporting driving performance typical for a Porsche 911, as well as extremely high driving safety combined with appealing driving characteristics. Porsche Stability Management (PSM) and the managed all-wheel drive Porsche Traction Management (PTM) also contribute to its unparalleled performance. The PTM system, with an electronically-controlled multi-plate clutch, can alternately shift the drive output from the engine between the front and rear axles according to grip levels. The clutch can perform shift intervals in under 100 milliseconds – quicker than the reaction of the engine to load changes.

With a drag coefficient of just 0.31Cd, the 911 Turbo Cabriolet cuts through the air with the ease of the coupe models. Together with the rear spoiler, which automatically extends at speeds from 75 mph – extending 30 mm further than with the Coupe – the vehicle is the only standard series convertible that generates negative lift at the rear axle. Along with its passive safety systems, including six airbags as standard equipment and the comprehensive rollover protection system – with steel tubing integrated into the windscreen frame and extendable rollover bars behind the rear seats – the 911 Turbo Cabriolet also fulfils all legal requirements for passive safety applicable in the worldwide sales markets. Furthermore, it is equipped with one of the most high-performance brake systems available. The six-cylinder fixed-brake calipers up front stem from the Porsche Carrera GT. The race-proven and lightweight Porsche Ceramic Composite Brake (PCCB) system is also available for the 911 Turbo Cabriolet, as an option.

Included in the extensive standard equipment of the 911 Turbo Cabriolet are Bi-Xenon headlights, 19 inch forged wheels, air conditioning, a wind deflector, a top tinted windscreen, the Porsche Communication Management (PCM) – with the satellite navigation module and color monitor, the Bose Surround Sound System and a leather interior.


3.6L horizontally-opposed 6-cyl engine-inc: twin turbochargers, twin intercoolers, variable turbine geometry, dry sump lubrication
Vario-Cam Plus variable valve timing system
6-speed manual transmission
Dual-mass flywheel
All wheel drive-inc: Porsche Traction Management (PTM)
Front/rear stabilizer bars
P235/35ZR19 front tires
P305/30ZR19 rear tires
19″ x 8.5″ front/19″ x 11″ rear pressure cast alloy turbo wheels
Pwr rack & pinion steering
Pwr 4-wheel vented disc brakes-inc: 6-piston front/4-piston rear monobloc fixed alloy calipers
Anti-lock braking system (ABS)
Porsche Stability Management (PSM)
Porsche Active Suspension Management System (PASM)-inc 10mm lowering


Front apron w/lower spoiler edge, additional air extractor vent
Aluminum doors and trunk lid
Pwr folding cabriolet top-inc: wind deflector
Automatic extending rear spoiler
Bi-Xenon headlights-inc: headlight leveling, washers
Front/rear fog lights
Pwr heated mirrors
Rain-sensing front wipers-inc: heated washer nozzles
Red brake calipers


2 + 2 Seating
Pwr front bucket seats w/adjustable lumbar
Drivers seat memory feature
Full leather interior
Leather-wrapped 3-spoke sport steering wheel w/Porsche crest
On-board computer-inc: continuous mileage indication, time, speed & pressure gauge, outside temp
Tire pressure monitoring system
Power windows w/auto up/down, anti-pich feature
Keyless entry
Cruise control
Anti-theft system
Leather PCM handset
HomeLink system
PCM-inc: 5.8″ color display
Alarm system w/radar interior surveillance
AM/FM stereo-inc: CD-player, MP3 capability
9-speaker Bose surround sound system
Automatic climate control w/active carbon filter
Illuminated visor vanity mirrors
Aluminum interior trim-inc: turbo design shift lever
Dual front cup holders
Alcantara-wrapped shift lever/handbrake


City 15/hwy 24 (3.6L engine/6-speed manual trans)
City 15/hwy 23 (3.6L engine/5-speed auto trans)


Anti-lock braking system (ABS)
Driver & front passenger airbags
Side-impact airbags
Porsche Stability Management (PSM)
Porsche side impact protection system (POSIP)
Front seatbelt pretensioners w/belt-force limitation
Child seat anchorage prep (ISOFIX) on passenger side w/airbag de-activation switch


EPA Classification


Engine Type Gas Flat 6-cyl
Displacement 3.6L/219
Fuel System EFI
SAE Net Horsepower @ RPM 480 @ 6000
SAE Net Torque @ RPM 460 @ 1950-5000
SAE Net Torque @ RPM 505 @ 2100-4000


All Wheel Drive
Trans Type 6
Trans Type 5
Trans Description Cont. Manual w/OD
Trans Description Cont. Tiptronic w/OD
First Gear Ratio (:1) 3.60
First Gear Ratio (:1) 3.82
Second Gear Ratio (:1) 2.14
Second Gear Ratio (:1) 2.19
Third Gear Ratio (:1) 1.48
Third Gear Ratio (:1) 1.41
Fourth Gear Rato (:1) 1.00
Fourth Gear Rato (:1) 1.81
Fifth Gear Ratio (:1) 0.97
Fifth Gear Ratio (:1) 0.83
Sixth Gear Ratio (:1) 0.79
Reverse Ratio (:1) 3.17
Reverse Ratio (:1) 2.67
Clutch Size (in) 9.45
Final Drive Axle Ratio (:1) 3.44
Final Drive Axle Ratio (:1) 3.05


EPA Fuel Economy Est – City (MPG) 15
EPA Fuel Economy Est – Hwy (MPG) 24
EPA Fuel Economy Est – Hwy (MPG) 23


Cold Cranking Amps @  F (Primary) – TBD –


Total Cooling System Capacity (qts) – TBD –


Base Curb Weight (lbs) 3494


Dead Weight Hitch – Max Trailer Wt. (lbs) – TBD –
Dead Weight Hitch – Max Tongue Wt. (lbs) – TBD –
Wt Distributing Hitch – Max Trailer Wt. (lbs) – TBD –
Wt Distributing Hitch – Max Tongue Wt. (lbs) – TBD –


Suspension Type – Front MacPherson Strut
Suspension Type – Rear Multi-Link
Suspension Type – Front (Cont.) w/Coil Springs
Suspension Type – Rear (Cont.) w/Coil Springs
Shock Absorber Diameter – Front (mm) – TBD –
Shock Absorber Diameter – Rear (mm) – TBD –
Stabilizer Bar Diameter – Front (in) – TBD –
Stabilizer Bar Diameter – Rear (in) – TBD –


Brake Type Power
Brake ABS System 4-Wheel
Disc – Front (Yes or ) Yes
Disc – Rear (Yes or ) Yes
Front Brake Rotor Diam x Thickness (in) 13.78 x 1.34
Rear Brake Rotor Diam x Thickness (in) 13.78 x 1.10


Front Tire Size P235/35ZR19
Rear Tire Size P305/30ZR19


Front Wheel Size (in) 19 x 8
Rear Wheel Size (in) 19 x 11
Front Wheel Material Aluminum
Rear Wheel Material Aluminum


Steering Type Power Rack & Pinion
Steering Ratio (:1), Overall – TBD –
Lock to Lock Turns (Steering) – TBD –
Turning Diameter – Curb to Curb (ft) – TBD –
Turning Diameter – Wall to Wall (ft) – TBD –


Fuel Tank Capacity, Approx (gal) 17.7


Wheelbase (in) 92.5
Length, Overall (in) 176.3
Width, Max w/o mirrors (in) 72.9
Height, Overall (in) 51.2
Tread Width, Front (in) 58.7
Tread Width, Rear (in) 60.9
Min Ground Clearance (in) – TBD –
Liftover Height (in) – TBD –


Trunk Volume (ft) 3.3


Passenger Capacity 4
Passenger Volume (ft) – TBD –
Front Head Room (in) – TBD –
Front Leg Room (in) – TBD –
Front Shoulder Room (in) – TBD –
Front Hip Room (in) – TBD –
Second Head Room (in) – TBD –
Second Leg Room (in) – TBD –
Second Shoulder Room (in) – TBD –
Second Hip Room (in) – TBD –


Vehicle Name 911
Body Style 2 Door Convertible

Scribbled on September 9th 2008 in Porsche, Porsche 911 Turbo
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