2015 Porsche 911 Targa 4 GTS (991) Technical Specifications
| Porsche Models Technical Data | 911 Targa 4 GTS |
| Engine | |
| Engine layout | Rear Engine |
| Engine type | Boxer-6 |
| Cylinders | 6 |
| Valves per cylinder | 4 |
| Construction | Aluminum block and heads |
| Fuel injection | Direct Fuel Injection (DFI) |
| Fuel | Premium |
| Displacement (Liters) | 3.8 L |
| Bore/Stroke (mm/mm) | 102 mm/77.5 mm |
| Maximum horsepower @ rpm | 430 hp @ 7500 rpm |
| Maximum torque @ rpm | 325 lb.-ft. @ 5750 rpm |
| Maximum engine speed (rpm) | 7800 |
| Compression ratio | 12.5 1 |
| Output per liter | 113.2 hp |
| Lubrication | Integrated dry-sump |
| Electrical System | 12 V, 2600 W alternator; battery capacity 70 Ah |
| Power to weight ratio [lb/hp] | 8.00/8.10 (PDK) |
| Management | SDI 9 |
| Drivetrain | Active all wheel drive |
| Chassis & Suspension | |
| Body |
Monocoque lightweight body in a combination of steel, aluminum and magnesium
|
| Front Axle | MacPherson strut aluminum double wishbone |
| Rear Axle | Aluminum multi-link |
| Steering System | Variable ratio power steering |
| Steering Ratio | 16.6 1 |
| Turning Circle | 36.4 ft |
| Brakes & Wheels | |
| Caliper type | Aluminum monobloc fixed-caliper brake |
| Rotor material | Steel |
| Caliper color | Red |
| Number of pistons (front/rear) | 6/4 |
| Rotor diameter (front/rear) mm | 340 mm/330 mm |
| Rotor thickness (front/rear) mm | 34 mm / 28 mm |
| Standard wheel [size & name] | 20″ Turbo S |
| Wheels (front/rear) | 9J x 20″ ET51 / 11.5J x 20″ ET48 |
| Tires (front/rear) | 245/35 ZR 20 / 305/30 ZR 20 |
| Number of gears | 7-speed |
| Transmission type | 7-speed manual / 7-speed PDK |
| Ratios | |
| 1st | 3.91 |
| 2nd | 2.29 |
| 3rd | 1.55/1.65 |
| 4th | 1.3 |
| 5th | 1.08 |
| 6th | 0.88 |
| 7th | 0.71/0.62 |
| Reverse | 3.55 |
| Front Axle Ratio | 3.33 |
| Rear Axle Ratio | 3.44 |
| Dimensions, Aerodynamics, & Weight | |
| Length (inches/mm) | 177.5 in. / 4509 mm |
| Wheelbase (inches/mm) | 96.5 in. / 2450 mm |
| Width w/ mirrors (inches/mm) | 77.9 in. / 1978 mm |
| Width w/o mirrors (inches/mm) | 72.9 in. / 1852 mm |
| Height- PASM | 50.8 in. / 1291 mm |
| Track width front (inches/mm) | 60.6 in. / 1538 mm |
| Track width rear (inches/mm) | 61.4 in. / 1560 mm |
| Drag coefficient (Cd) | 0.3 |
| Legroom (inches) | TBD |
| Headroom (inches) | TBD |
| Luggage compartment volume (cu.-ft.) | 125 l / 33.0 gal. |
| Fuel tank capacity – refill volume (gal) | 18.0 gal. |
| Curb weight (lbs) min | 3439 lbs. / 3483 lbs. |
| Curb weight (lbs) max | 3616 lbs. / 3660 lbs. |
| Gross Vehicle Weight (lbs) | 4321 lbs. / 4365 lbs. |
| Payload range (lbs) – depend on options | 705 lbs. – 882 lbs. |
| Ground Clearance (Sports Cars) | |
| Ramp-over angle- PASM (degrees) | 11.5° |
| Approach angle- PASM (degrees) | 11.5°/8.6° (w/ spoiler lip) |
| Departure angle- PASM (degrees) | 13.3° |
| Performance | |
| Top track speed (mph) | 188 mph / 187 mph |
| Acceleration 0-60 with Sport Chrono (sec) | 4.5 seconds / 4.1 seconds (PDK) |
