Specs

Research 2012 BMW Z4 specs for the trims available. Choose the desired trim / style from the dropdown list to see the corresponding specs.

sDrive28i Roadster

Brakes

Front Brake Rotor Diam x Thickness (in) 13.0 x 0.9
Drum - Rear (Yes or )
Rear Drum Diam x Width (in)
Brake Type Pwr
Brake ABS System 4-Wheel
Disc - Front (Yes or ) Yes
Disc - Rear (Yes or ) Yes
Rear Brake Rotor Diam x Thickness (in) 11.8 x 0.8

Cargo Area Dimensions

Trunk Volume (ft³) 10.9/6.4

Cooling System

Total Cooling System Capacity (qts) 8.7

Electrical

Cold Cranking Amps @ 0° F (Primary) - TBD -
Maximum Alternator Capacity (amps) 170

Emissions

Tons/yr of CO2 Emissions @ 15K mi/year 6.7
EPA Greenhouse Gas Score 6

Engine

Engine Type Turbocharged Gas I4
Fuel System Direct Injection
SAE Net Horsepower @ RPM 240 @ 5000
SAE Net Torque @ RPM 260 @ 1250 - 4800
Engine Order Code
Displacement 2.0L/122

Exterior Dimensions

Length, Overall (in) 167.0
Liftover Height (in) - TBD -
Min Ground Clearance (in) 5.1
Track Width, Rear (in) 61.4
Track Width, Front (in) 59.5
Height, Overall (in) 50.8
Width, Max w/o mirrors (in) 70.5
Wheelbase (in) 98.3

Fuel Tank

Fuel Tank Capacity, Approx (gal) 14.5

Interior Dimensions

Front Leg Room (in) 42.2
Front Shoulder Room (in) 53.3
Front Hip Room (in) - TBD -
Front Head Room (in) 39.1
Passenger Volume (ft³) - TBD -
Passenger Capacity 2

Mileage

EPA Fuel Economy Est - City (MPG) 23
EPA Fuel Economy Est - City (MPG) 24
Fuel Economy Est-Combined (MPG) 27
EPA Fuel Economy Est - Hwy (MPG) 34
EPA Fuel Economy Est - Hwy (MPG) 33

Steering

Lock to Lock Turns (Steering) 3.0
Steering Ratio (:1), Overall 14.4
Steering Type Electric Rack & Pinion
Turning Diameter - Wall to Wall (ft) - TBD -
Turning Diameter - Curb to Curb (ft) 35.1

Summary

Vehicle Name BMW Z4
Body Style Convertible

Suspension

Shock Absorber Diameter - Front (mm)
Stabilizer Bar Diameter - Rear (in)
Stabilizer Bar Diameter - Front (in)
Shock Absorber Diameter - Rear (mm)
Suspension Type - Front Independent
Suspension Type - Rear Independent
Suspension Type - Front (Cont.)
Suspension Type - Rear (Cont.)

Tires

Spare Tire Size
Front Tire Size P225/40R18
Front Tire Size P225/45R17
Rear Tire Size P255/35R18
Rear Tire Size P225/45R17
Front Tire Order Code
Rear Tire Order Code
Spare Tire Order Code

Trailering

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

Transmission

Trans Type 6
Final Drive Axle Ratio (:1) 3.73
Clutch Size (in) - TBD -
Reverse Ratio (:1) 3.35
Trans Description Cont. Again
Trans Description Cont. Manual
Trans Description Cont. Automatic w/Manual Shift
Final Drive Axle Ratio (:1) 3.08
Trans Type 8
Trans Order Code
Drivetrain Rear Wheel Drive
Seventh Gear Ratio (:1) 0.84
Seventh Gear Ratio (:1)
Eighth Gear Ratio (:1) 0.67
Eighth Gear Ratio (:1)
Reverse Ratio (:1) 3.30
Sixth Gear Ratio (:1) 0.68
Sixth Gear Ratio (:1) 1.00
Fifth Gear Ratio (:1) 0.81
Fifth Gear Ratio (:1) 1.29
Fourth Gear Ratio (:1) 1.00
Fourth Gear Ratio (:1) 1.67
Third Gear Ratio (:1) 1.31
Third Gear Ratio (:1) 2.11
Second Gear Ratio (:1) 2.06
Second Gear Ratio (:1) 3.14
First Gear Ratio (:1) 3.68
First Gear Ratio (:1) 4.71

Vehicle

EPA Classification Two Seaters

Weight Information

Base Curb Weight (lbs) 3307
Base Curb Weight (lbs) 3263

Wheels

Spare Wheel Material
Front Wheel Size (in) 17 x 8
Front Wheel Size (in) 18 x 8
Rear Wheel Size (in) 17 x 8
Spare Wheel Size (in)
Rear Wheel Size (in) 18 x 8.5
Front Wheel Material Aluminum
Rear Wheel Material Aluminum