Overview

Model:

2008 Cadillac XLR and XLR-V luxury roadster

Body style / driveline:

XLR: 2-door hardtop convertible with rear-wheel drive

Construction:

hydroformed perimeter frame, structural center tunnel, aluminum cockpit frame

Body material:

composite exterior panels

Manufacturing location:

Bowling Green, Ky.

Key competitors:

XLR: Mercedes-Benz SL500, Lexus SC 430, Jaguar Xk8

Engine

Type:

Northstar 4.6L V-8 VVT (variable valve timing)

Displacement (cu in / cc):

279 / 4565

Bore & stroke (in / mm):

3.66 x 3.31 / 93 x 84

Block material:

cast aluminum

Cylinder head material:

cast aluminum

Crankshaft material:

forged steel

Valvetrain:

DOHC, 4 valves per cylinder, four-cam continuously variable valve timing

Ignition system:

coil-on-plug ignition, with extended-life dual platinum-tipped spark plugs

Fuel system:

sequential electronic fuel injection

Compression ratio:

10.5:1

Horsepower (hp / kw @ rpm):

320 / 239 @ 6400

Torque (lb-ft / Nm @ rpm):

310 / 420 @ 4400

Recommended fuel:

premium recommended but not required

Max. engine speed (rpm):

6750

Estimated fuel economy
(mpg city / hwy / combined):

15 / 24 / 19.5

Transmission

Type:

Hydra-Matic 6L50 (MYC) rear-wheel drive, electronically controlled 6-speed automatic with torque converter clutch and Driver Shift Control

Gear ratios (:1):

First:

4.03

Second:

2.37

Third:

1.55

Fourth:

1.15

Fifth:

0.85

Reverse:

3.02

Final drive ratio:

2.73

Chassis/Suspension

Front:

short/long arm ( SLA ) double wishbone, cast aluminum upper & lower control arms, transverse-mounted composite leaf spring, Magnetic Ride Control

Rear:

short/long arm ( SLA ) double wishbone, cast aluminum upper & lower control arms, transverse-mounted composite leaf spring, Magnetic Ride Control

Steering type:

Magnasteer power-assisted rack-and-pinion

Steering ratio:

17.2:1

Steering wheel turns (lock to lock):

2.9

Turning diameter, curb to curb (ft / m):

39 / 11.9

Brakes

Type:

power-assisted disc with 4-channel ABS, front and rear

Rotor diameter x thickness (in / mm):

front: 12.8 x 1.3 / 325 x 32
rear: 12.0 x 1.0 / 305 x 26

Wheels/Tires

Wheel type and size:

std: spun-cast aluminum, 18 inch x 8 inch
opt: chrome, 18 inch x 8 inch

Tires:

Goodyear EMT Run Flat

front: P235/50R18

rear: P235/45R19

Dimensions
Exterior

Wheelbase (in / mm):

105.7 / 2685

Overall length (in / mm):

177.7 / 4513

Overall width (in / mm):

72.3 / 1836

Overall height (in / mm):

50.4 / 1279

Track (in / mm):

front: 62.2 / 1580
rear: 62.2 / 1580

Minimum ground clearance
(in / mm):

6.61 / 168

Curb weight (lb / kg):

3647 / 1654

Interior

Seating capacity
(front / rear):

2 / 0

Headroom (in / mm):

37.6 / 955

Legroom (in / mm):

42.6 / 1083

Shoulder room (in / mm):

54.3 / 1380

Hip room (in / mm):

53 / 1346

Capacities

Cargo volume (cu ft / L):

Top up:

11.6 / 328

Top down:

4.4 / 125

Fuel tank (gal / L):

18 / 68.1

Engine oil (qt / L):

7.5 / 7.1

Performance

Acceleration (0-60 mph / 0-97 km/h):

5.8 sec.

Max. lateral acceleration:

0.90g

2006 Cadillac XLR-V luxury roadster

Body style / driveline:

2-door high-performance hardtop convertible with rear-wheel-drive

Construction:

hydroformed perimeter frame, structural center tunnel, aluminum cockpit frame

Manufacturing location:

Bowling Green, Ky.

Key competitors:

Mercedes Benz SL 55 AMG Roadster, Lexus SC Convertible, Jaguar XKR Convertible

Northstar V-8 SC

Configuration:

supercharged 4.4L DOHC V-8

Displacement (cu in / cc):

267 / 4371

Bore & stroke (in / mm):

3.58 x 3.31 / 91 x 84

Block material:

upper – sand-cast 319 T7 aluminum
lower – die-cast aluminum

Cylinder head material:

319 T7 semi-permanent mold cast aluminum alloy

Valvetrain:

roller follower DOHC, 4 valves per cylinder, variable valve timing

Ignition system:

coil-on-plug with extended-life dual platinum-tipped spark plugs

Fuel delivery:

returnless, electronic sequential fuel injection

Compression ratio:

9.0:1

Horsepower (hp / kw @ rpm):

443 / 330 @ 6400 rpm (SAE certified*)

Torque (lb-ft / Nm @ rpm):

414 / 561 @ 3900 rpm (SAE certified*)
90-percent of peak torque available between 2200 and 6000 rpm

Recommended fuel:

premium required

Maximum engine speed (rpm @ fuel shutoff):

6700

Emissions controls:

• BIN8/EURO 4 compliant
• close-coupled catalytic converters
• EGR and AIR not required
• meets Federal, California , and LEV2 evaporative emissions standards

Hydra-Matic 6L80six-speed, rear-wheel-drive, electronically controlled, automatic overdrive transmission with torque converter clutch. Clutch-to-clutch architecture with integral electro/hydraulic control module

Gear ratios:

First:

4.03

Second:

2.36

Third:

1.53

Fourth:

1.15

Fifth:

0.85

Sixth:

0.67

Reverse:

3.06

Maximum shift speed:

6500 rpm

Final drive:

2.56

short/long arm ( SLA ) double wishbone, cast aluminum upper & lower control arms, transverse-mounted composite leaf spring, Magnetic Ride Control

Rear:

short/long arm ( SLA ) double wishbone, cast aluminum upper & lower control arms, transverse-mounted composite leaf spring, Magnetic Ride Control

Traction control system:

full-range

Stabilizer bar:

front: hollow, 28.6 by 4.5 mm wall thickness
rear: hollow, 23.6 by 3.5 mm wall thickness

Steering type:

Magnasteer power-assisted rack-and-pinion

Steering wheel turns, lock-to-lock:

2.9

Turning circle, curb-to-curb (ft / m):

39 / 11.9

heavy duty with cross-drilled rotors and high-performance brake linings, dual piston front calipers and single-piston rear calipers. Power-assist with 4-channel ABS front and rear.

Rotor diameter x thickness (in / mm):

front: 13.4 x 1.3 / 340.4 x 32
rear: 13 x 1 / 330.2 x 26

front: aluminum, 19 x 8.5
rear: aluminum, 19 x 8.5

Tires:

front: P235/45R19 – Pirelli Run Flat
rear: P235/45R19 – Pirelli Run Flat

Length (in / mm):

177.7 / 4513

Width (in / mm):

72.3 / 1836

Height (in / mm):

50.4 / 1279

Wheelbase (in / mm):

105.7 / 2685

Tread - front (in / mm) (C/L of at ground):

61.63 / 1564.4

Tread - rear (in / mm) (C/L of at ground):

62.13 / 1578.16

Interior

Seating capacity (front / rear):

2 / 0

Headroom (in / mm):

37.6 / 955

Legroom (in / mm):

42.6 / 1083

Shoulder room (in / mm):

54.3 / 1380

Hip room (in / mm):

53 / 1346

18 / 68.1

Engine oil (qt / L):

7.5 / 7.1

Seating capacity (front / rear):

2 / 0

Curb weight (lb / kg) estimated:

3804 / 1726