C OM PET I TOR S

CURRENT BASE PRICE* dollars x 1000*Base price includes freight, any performance options, and applicable gas-guzzler tax.

GT-R TRACK EDITIONVIPER GTS911 GT3R8 V-10 PLUS

100 130 160 190

N O TA B L E H I G H L I G H T STwo electric motors control the toe-control links that steer the rear wheels up to 1.5 degrees. At low speeds, the rear wheels steer in the opposite direction of the fronts to increase the yaw rate. Above 50 mph, the rear wheels steer in the same direction as the fronts for greater high-speed stability.

SPE CI F IC AT IONSPRICEAS TESTED ........................................ $142,265BASE ................................................. $131,350

VEHICLE TYPE: rear-engine, rear-wheel-drive, 2-passenger, 2-door coupeOPTIONS: Porsche Ceramic Composite Brakes, $9210; Sound Package Plus, $700; Sport Chrono clock, $400; Guards Red seatbelts, $340; telephone module, $265STANDARD: power windows and locks, remote locking, tilting and telescoping steering wheelAUDIO SYSTEM: CD player; media storage; minijack, USB, and Bluetooth-audio inputs; 7 speakers

ENGINEflat-6, aluminum block and headsBORE X STROKE ... 4.02 x 3.05 in, 102.0 x 77.5 mmDISPLACEMENT ................... 232 cu in, 3800 ccCOMPRESSION RATIO .............................. 12.9:1FUEL DELIVERY SYSTEM ........... direct injection VALVE GEAR: double overhead cams, 4 valves per cylinder, hydraulic lifters, variable intake- and exhaust-valve timingREDLINE/FUEL CUTOFF .......... 9000/9000 rpm POWER .............................. 475 hp @ 8250 rpmTORQUE .......................... 324 lb-ft @ 6250 rpmDRIVETRAINTRANSMISSION ................... 7-speed dual-clutch

automatic with manual shifting modeFINAL-DRIVE RATIO ................ 3.97:1, limited slip

EXTERIOR DIMENSIONSWHEELBASE ..................................... 96.5 inLENGTH ........................................... 178.9 inWIDTH ............................................... 72.9 inHEIGHT ............................................ 50.0 inFRONT TRACK ................................... 61.0 inREAR TRACK ..................................... 61.2 inGROUND CLEARANCE .......................... 3.7 in

INTERIOR DIMENSIONSSAE VOLUME ................................... 50 cu ftTRUNK ............................. F: 4 cu ft R: 9 cu ft

STABILITY CONTROL .............. partially and fully defeatable, launch control

WHEELS AND TIRESWHEEL SIZE/CONSTRUCTION ........ F: 9.0 x 20 in

R: 12.0 x 20 in/forged aluminumTIRES ........................ Michelin Pilot Sport Cup 2

F: 245/35ZR-20 (91Y) R: 305/30ZR-20 (103Y)

CAR AND DRIVER TEST RESULTS

TEST NOTES: We attempted a launch using the “paddle neutral” scheme, but the engine bogs as the clutch slams shut. The real launch-control program manages the clutch and wheelspin judiciously to knock off 0.3 second. Upshifting with the paddles shaves off another tenth.

HANDLINGROADHOLDING, 200-FT-DIA SKIDPAD ............... 1.12 gUNDERSTEER ....................... MINIMAL

TEST NOTES: The GT3 is absolutely neutral around the skidpad. At the limit, it’s much easier to provoke understeer than it is to break the 305/30 Michelin Pilot Sport Cup 2 tires loose at the rear.

INTERIOR SOUND LEVELIDLE ........................................... 59 dBAFULL THROTTLE ...................... 94 dBA70-MPH CRUISING .................... 77 dBA

FUELCAPACITY .................................. 16.9 galOCTANE .......................... 93 (required)EPA CITY/HWY ....... 16/23 mpg (C/D est)C/D OBSERVED ..................... 17 mpg

WEIGHTCURB ............................................ 3197 lbPER HORSEPOWER ...................... 6.7 lbDISTRIBUTION ......... F: 39.3% R: 60.7%TOWING CAPACITY ........................... 0 lb

TEST NOTES: Braking performance from the carbon-ceramic setup is nothing short of phenomenal, averaging 1.21 g during the shortest stops. The pedal is firm and easily modulated.

BRAKING, 70-TO-ZERO MPHFIRST STOP ................................... 135 ftSHORTEST STOP ...................... 135 ftLONGEST STOP ............................ 139 ftFADE RATING ................................ NONE

ACCELERATIONZERO TO SECONDS

30 MPH .............................................. 1.240 MPH .............................................. 1.750 MPH ............................................. 2.360 MPH ....................................... 3.070 MPH ............................................. 3.980 MPH ............................................. 4.890 MPH ............................................. 5.9100 MPH ....................................... 7.1110 MPH ...................................................... 8.5120 MPH ..................................................... 10.1130 MPH .................................................... 12.0140 MPH .................................................... 14.3150 MPH ...................................................... 17.1

ROLLING START, 5–60 MPH .......... 3.9 TOP GEAR, 30–50 MPH ................. 2.2TOP GEAR, 50–70 MPH .................. 2.11/4-MILE ............. 11.2 sec @ 126 mphTOP SPEED (DRAG LTD, MFR’S CLAIM) .............. 195 mph

tested by ERIC TINGWALLin Schwäbisch Hall, Germany

GEAR RATIO MPH PER MAX SPEED 1000 RPM IN GEAR (rpm)1 ........ 3.75 ...... 5.3 ............ 48 mph (9000)2 ........ 2.38 ..... 8.3 ............ 75 mph (9000)3 ........ 1.72 ....... 11.6 ............ 104 mph (9000)4 ........ 1.34 ...... 14.8 ........... 133 mph (9000)5 ........ 1.11 ........ 18.0 ........... 162 mph (9000)6 ........ 0.96 ..... 21.3 ........... 192 mph (9000)7 ....... 0.84 ..... 24.0 .......... 195 mph (8100)

CHASSISunit constructionBODY MATERIAL: steel and aluminum stampingsSTEERINGrack-and-pinion with variable ratio and variable electric power assistRATIO ................................................ 17.2–13.1:1 TURNS LOCK-TO-LOCK ................................ 2.7TURNING CIRCLE CURB-TO-CURB ........... 36.4 ft

SUSPENSIONF: ind, strut located by 1 diagonal link and 1 lateral link, coil springs, 2-position cockpit-adjustable electronically controlled shock absorbers, anti-roll barR: ind; 2 diagonal links, 2 lateral links, and a toe-control link per side; coil springs; 2-position cockpit-adjustable electronically controlled shock absorbers; anti-roll bar BRAKESF: 16.1 x 1.4-in vented, cross-drilled, carbon- ceramic discR: 15.4 x 1.3-in vented, cross-drilled, carbon-ceramic disc

AUDI R8 V-10 PLUS (5.2-LITER V-10, 550 HP, 7-SP AUTO)NISSAN GT-R TRACK EDITION (3.8-LITER V-6, 545 HP, 6-SP AUTO)PORSCHE 911 GT3 (3.8-LITER FLAT-SIX, 475 HP, 7-SP AUTO)SRT VIPER GTS(8.4-LITER V-10, 640 HP, 6-SP MAN)

PORSCHE 911 GT3

ACCELERATION 0–60 & 1/4-mile, seconds

GT-R TRACK EDITION911 GT3R8 V-10 PLUSVIPER GTS

2.8 3.0 3.2 11.2 11.4 11.6

ROADHOLDING 200- or 300-foot skidpad, g

911 GT3GT-R TRACK EDITIONVIPER GTSR8 V-10 PLUS

0.95 1.00 1.05 1.10 1.15

70–0 BRAKING feet

911 GT3GT-R TRACK EDITIONVIPER GTSR8 V-10 PLUS

130 135 140 145 150