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TransmissionTypeSingle speed fixed gearOverall Final Drive RatioSmall motor: 9.325:1
Large motor: 9.734:1Reverse GearReverse direction of motor, limited to
15 mph (24 km/h)
Steering
TypeRack and pinion with electronic power steering, speed sensitiveNumber of turns lock to lock2.05Turning Circle (curb to curb)40.8 ft (12.4 m)
Brakes
Type
4-wheel anti-lock braking system (ABS)
with Electronic Brake Force Distribution,
Integrated Advanced Stability Control and
Electronic Accelerator pedal actuated
regenerative braking systemCalipersFront: Four piston, fixed
Rear: Single piston,
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SuspensionFrontIndependent, virtual pivot double
wishboneRearIndependent, virtual pivot double
wishbone
Battery - 12V
Rating33 amp hour or higherVoltage and Polarity12V negative (-) ground
Battery - High Voltage
TypeLiquid-cooled lithium ion (Li-ion)Temperature RangeDo not expose Model X to ambient
temperatures above 140
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Wheels and Tires
Wheel Specifications (Factory)
Wheel TypeSizeOffset20" - All Season - Front9.0J x 201.378" 35 mm20" - All Season - Rear9.5J x 201.575" 40 mm20" - Summer - Front9.0J x 201.378" 35 mm20" - Summer - Rear10.0J x 201.378" 35 mm22" - Summer - Front9.0J x 221.378" 35 mm22" - Summer - Rear10.0J x 221.378" 35 mmLug Nut Torque129 lb. ft (175 Nm)Lug Nut Socket Size21 mmNote: For instructions on how to jack/lift Model X, see Jacking and Lifting on page 208.
Wheels and Tires
218Model X Owner
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Tire Specifications (Factory)Tire TypeSizeLoad Index / Speed Rating20" - Continental - Front265/45R20108 / V20" - Continental - Rear275/45R20110 / V22" - Goodyear or Pirelli - Front265/35R22102 / W22" - Goodyear or Pirelli - Rear285/35R22106 / WRefer to the tire pressures printed on the Tire and Loading Information label. This label is
located on the driver
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Understanding Tire MarkingsLaws require tire manufacturers to place standardized information on the sidewall of all tires. This
information identifies and describes the fundamental characteristics of the tire. It also provides
the tire identification number (TIN) for certification of safety standards, and in case of a recall.1Tire category. P indicates that the tire is for passenger vehicles.2Tire width. This 3-digit number is the width (in millimeters) of the tire from sidewall
edge to sidewall edge.3Aspect ratio. This 2-digit number is the sidewall height as a percentage of the tread
width. So, if the tread width is 205 mm, and the aspect ratio is 50, the sidewall height is 102 mm.4Tire construction. R indicates that the tire is of Radial ply construction.5Wheel diameter. This 2-digit number is the diameter of the wheel rim in inches.6Load index. This 2 or 3-digit number is the weight each tire can support. This number is
not always shown.
Wheels and Tires
220Model X Owner
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7Speed rating. When stated, indicates the maximum speed (in mph) at which the tire
can be used for extended periods. Q=99 mph (160 km/h), R=106 mph (170 km/h), S=112 mph (180 km/h), T=118 mph (190 km/h), U=124 mph (200 km/h), H=130 mph
(210 km/h), V=149 mph (240 km/h), W=168 mph (270 km/h), Y=186 mph (300 km/h).8Tire composition and materials. The number of plies in both the tread area and the sidewall area indicates how many layers of rubber coated material make up the structure of the tire. Information is also provided on the type of materials used.9Maximum tire load. The maximum load which can be carried by the tire.10Maximum permissible in
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Uniform Tire Quality GradingThe following information relates to the tire
grading system developed by the National
Highway Traffic Safety Administration
(NHTSA), which grades tires by tread wear,
traction and temperature performance. Tires
that have deep tread, and winter tires, are
exempt from these marking requirements.
Where applicable, quality grades are found on
the tire
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Tire and Loading Glossaries
General Wheel and Tire TermsAccessory WeightThe combined weight (in excess of those items replaced) of
items available as factory installed equipment.BeadThe inner edge of a tire that is shaped to fit to the rim and form
an air tight seal. The bead is constructed of steel wires which
are wrapped, or reinforced, by the ply cords.Cold Tire PressureThe air pressure in a tire that has been standing in excess of
three hours, or driven for less than one mile.Curb WeightThe weight of a standard vehicle, including any optional
equipment fitted, and with the correct