Motor Type
Front Motor AC permanent magnet synchronous motor, liquid-cooled, with variable frequency drive
Rear Motor AC induction motor, liquid-cooled, with variable frequency drive
Nominal Voltage 320 volts
Transmission
Type Single speed
fixed gear
Overall Final Drive Ratio
Small motor: 9.3:1
Large motor: 9.7:1
Reverse Gear Reverse direction of motor, limited to
15 mph (24 km/h)
Steering
Steering Specifications
Type Variable ratio rack and pinion with electronic power steering, speed sensitive
Number of turns lock to lock 2.33
Turning Circle (curb to curb) 40.3 ft/12.3 m
Brakes
Brakes Specifications
Type
4-wheel anti-lock braking system (ABS) with Electronic Brake
Force Distribution, Integrated Advanced Stability Control and
Electronic Accelerator pedal actuated regenerative braking system
Calipers
Front: Four piston,
fixed
Rear: Single piston, floating
Rotor Diameters (ventilated) Front: 13.98”/355 mm
Rear: 14.37”/365 mm
Front Rotor thickness
New: 1.26”/32 mm
Service limit: 1.18”/30 mm
Rear Rotor thickness New: 1.10”/28 mm
Service limit: 1.02”/26 mm
Front Brake Pad Thickness (excluding back
plate)
0.346”/8.8 mm
Subsystems
184 MODEL S Owner's Manual
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