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2013 BMW Z4 sDrive28i 2dr Roadster

Trim Info:

Rear Wheel Drive, Convertible, Two Seaters
23 (2012) mpg city / 34 (2012) mpg hwy

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Technical Specifications

Technical Data

Body Style:

Convertible

Drivetrain:

Rear Wheel Drive

EPA Classification:

Two Seaters

Passenger Capacity:

Base Curb Weight (lbs):

3307

EPA Fuel Economy Est - City (MPG):

23 (2012)

EPA Fuel Economy Est - Hwy (MPG):

34 (2012)

Engine Type:

Turbocharged Gas I4

Displacement:

2.0L/122

Fuel System:

Direct Injection

SAE Net Horsepower @ RPM:

240 @ 5000

SAE Net Torque @ RPM:

260 @ 1250 - 4800

Trans Description Cont.:

Manual

Suspension Type - Front:

Independent

Suspension Type - Rear:

Independent

Front Tire Size:

P225/45R17

Rear Tire Size:

P225/45R17

Front Wheel Size (in):

17 x 8.0

Rear Wheel Size (in):

17 x 8.0

Front Wheel Material:

Aluminum

Rear Wheel Material:

Aluminum

Brake ABS System:

4-Wheel

Disc - Front (Yes or ):

Yes

Disc - Rear (Yes or ):

Yes

Rear Brake Rotor Diam x Thickness (in):

11.800 x 0.800

Fuel Tank Capacity, Approx (gal):

14.500

Wheelbase (in):

98.300

Length, Overall (in):

167.000

Trunk Volume (ft³):

10.900/6.400

Advanced Technical Data

EPA Greenhouse Gas Score:

6 (2012)

Fuel Economy Est-Combined (N/A):

27 (2012)

Trans Type:

First Gear Ratio (:1):

3.680

Second Gear Ratio (:1):

2.060

Third Gear Ratio (:1):

1.310

Fourth Gear Ratio (:1):

1.000

Fifth Gear Ratio (:1):

0.810

Sixth Gear Ratio (:1):

0.680

Reverse Ratio (:1):

3.350

Final Drive Axle Ratio (:1):

3.080

Tons/yr of CO2 Emissions @ 15K mi/year:

6.7 (2012)

Total Cooling System Capacity (qts):

8.700

Steering Type:

Electric Rack & Pinion

Steering Ratio (:1), Overall:

14.400

Lock to Lock Turns (Steering):

3.000

Turning Diameter - Curb to Curb (ft):

35.100

Brake Type:

Pwr

Front Brake Rotor Diam x Thickness (in):

13.000 x 0.900

Front Leg Room (in):

42.200

Front Shoulder Room (in):

53.300

Width, Max w/o mirrors (in):

70.500

Height, Overall (in):

50.800

Track Width, Front (in):

59.500

Min Ground Clearance (in):

5.100

Seventh Gear Ratio (:1):

0.840

Eighth Gear Ratio (:1):

0.670

Tips on Servicing

Car Brakes: How Do You Know When to Change Them?

By Zach Bowman For those who suffer a daily commute through heavy traffic, your vehicle's braking system can bring thousands of pounds of metal, plastic and empty Starbucks cups to a stop hundreds of times before you get to work. It goes without saying that these pieces wear out, but they do so slowly, meaning you may not notice they need attention until ...