2015 TESLA MODEL S Wi fi

Understanding Tire Markings
Laws 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 safety standard certification and in case of a recall.
Wheels and Tires
Specifications145

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.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 inflation pressure. This pressure should not be used for normal driving.11U.S. DOT Tire Identification Number (TIN). Begins with the letters DOT and indicates
that the tire meets all federal standards. The next 2 digits/letters represent the plant
code where it was manufactured, and the last 4 digits represent the week and year of
manufacture. For example, the number 1712 is used to represent the 17th week of 2012.
The other numbers are marketing codes used at the manufacturer’s discretion. This
information can be used to contact consumers if a tire defect requires a recall.12Treadwear grade. This number indicates the tire’s wear rate. The higher the treadwear number is, the longer it should take for the tread to wear down. A tire rated at 400, for
example, lasts twice as long as a tire rated at 200.13Traction grade. Indicates a tire’s ability to stop on wet roads. A higher graded tire should allow you to stop your vehicle in a shorter distance than a tire with a lower
grade. Traction is graded from highest to lowest as AA, A, B, and C.14Temperature grade. The tire’s resistance to heat is grade A, B, or C, with A indicating
the greatest resistance. This grading is provided for a correctly inflated tire, which is
being used within its speed and loading limits.
Wheels and Tires
146Model S Owner's Manual

Uniform Tire Quality Grading
The 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’s sidewall between the tread shoulder and maximum section width. For example:
• TREADWEAR 180
• TRACTION AA
• TEMPERATURE A
The quality grades are described next. Note: In addition to the marking requirements,
passenger car tires must conform to Federal Safety Requirements.
Treadwear
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified government test course.
For example, a tire graded 150 wears one and
a half times better on a government test
course than a tire graded 100. The relative
performance of tires depends on the actual
conditions of their use, however, and can depart significantly from the norm due to
variations in driving habits, service practices, road characteristics, and climate.
Traction
The traction grades, from highest to lowest,
are: AA, A, B, and C. These grades represent a
tire’s ability to stop on wet pavement as
measured under controlled conditions on test
surfaces of asphalt and concrete. A tire
marked C might have poor traction performance.Warning: Defective tires are dangerous.
Do not drive if a tire is damaged,
excessively worn, or is inflated to an
incorrect pressure. The safety of the
vehicle and occupants can be adversely
affected. Check tires regularly for wear
and to ensure there are no cuts, bulges or
exposure of the ply/cord structure.Warning: The traction grade assigned to
the tire is based on straight-ahead
braking tests, and doesn’t include:acceleration, cornering, hydroplaning or
peak traction characteristics.
Temperature
The temperature grades are A (the highest), B, and C, representing the tire’s resistance tothe generation of heat and its ability to
dissipate heat when tested under controlled
conditions on a specified indoor laboratory test wheel. Sustained high temperature cancause the tire to degenerate and reduce tirelife, and excessive temperature can lead to
sudden tire failure.
The grade C corresponds to the minimum
level of performance that all passenger car
tires must meet under the Federal Motor Safety Standard No. 109. Grades B and A
represent levels of performance on the
laboratory test wheel that exceed the
minimum requirements.
Warning: A tire’s temperature grade is
established for a tire that is properly
inflated and not overloaded. Excessive
speed, under-inflation, or excessive
loading, either separately or in
combination, can cause heat buildup and
possible tire failure.
Wheels and Tires
Specifications147

Wheels and Tires GlossaryAccessory 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 fluid levels.Gross Vehicle WeightThe maximum permissible weight of a vehicle with driver,
passengers, load, luggage, and equipment.kPa (kilo pascal)A metric unit used to measure pressure. One kilo pascal equals
approximately 0.145 psi.Maximum Inflation PressureThe maximum pressure to which the tire should be inflated. This pressure is given on the tire side wall in psi (lbf/in).Caution: This pressure marked on the tire is the maximum
allowed by the tire manufacturer. It is not the pressure Tesla recommends using for Model S.Maximum Loaded Vehicle
WeightThe sum of curb weight, accessory weight, vehicle capacity
weight, and production options weight.Production Options WeightThe combined weight of options installed which weigh in
excess of 3 lb more than the standard items that they replaced, and are not already considered in curb or accessory weights.PSI (lbf/in)Pounds per square inch (the unit used to measure tirepressure).Recommended Tire Inflation
PressureTire inflation pressure, established by Tesla, which is based on the type of tires that are mounted on the vehicle at the factory.
This information can be found on the Tire and Loading
Information label located on the door pillar.RimThe metal support for a tire, or tire and tube, upon which the
tire beads are seated.Vehicle Capacity WeightThe number of seats multiplied by 150 lbs plus the rated amount of load/luggage.
Wheels and Tires
148Model S Owner's Manual

Tesla Roadside Assistance is available to you, 24 hours a day, 365 days a year, for the duration of
your warranty period.
To contact Roadside Assistance, call:
1-877-79TESLA (1-877-798-3752)
Advise the representative of the vehicle identification number (VIN), license plate number, mileage, your location, and the nature of the problem. The VIN is on the upper dashboard on thedriver’s side of your vehicle and is visible through the windshield.
Roadside Assistance covers transportation of Model S for up to 50 miles (80 kms) in the event of
a flat tire. However, owners are responsible for transportation expenses if the Battery is over- discharged. For a complete description of the terms and conditions of the Tesla RoadsideAssistance Program, refer to the policy that was provided to you by Tesla when you purchasedModel S.
It is your responsibility to provide vehicle transporters with instructions on how to transport
Model S (see Instructions for Transporters on page 150).
Contacting Roadside Assistance
Roadside Assistance149

Use a Flatbed Only
Use a flatbed trailer only, unless otherwise
specified by Tesla. Do not transport Model S with the tires directly on the ground.Caution: Damage caused by transporting
is not covered by the warranty.Caution: To transport Model S, follow the
instructions exactly as described next.
Disable Self-Leveling (air
suspension vehicles only)
If Model S is equipped with Smart Air
Suspension, it automatically self-levels, even when power is off. To prevent damage, you
must activate Jack mode to disable self- leveling:
1. Touch Controls > Suspension on the
touchscreen.
2. Press the brake pedal, then touch Very
High to maximize height.
3. Touch Jack.
When Jack mode is active,
Model S displays this indicator
light on the instrument panel,
along with a message telling you
that active suspension is
disabled.
Note: Jack mode cancels when Model S is
driven over 4.5 mph (7 km/h).
Warning: Failure to activate Jack mode
on a Model S equipped with Smart Air
Suspension can result in the vehicle becoming loose during transport, which
may cause significant damage.Activate Tow Mode
Model S may automatically shift into Park
when it detects the driver leaving the vehicle, even if it has previously been shifted into
Neutral. To keep Model S in Neutral (which disengages the parking brake), you must use
the touchscreen to activate Tow mode:
1. Shift into Park.
2. Press the brake pedal, then on the
touchscreen, touch Controls > Settings >
Service & Reset > Tow Mode .When Tow mode is active, Model S
displays this indicator light on the
instrument panel, along with a
message telling you that Model S is
free-rolling.
Note: Tow mode cancels when Model S is
shifted into Park.
Caution: If the electrical system is not
working, and you therefore cannot
release the electric parking brake,
attempt to quick start the 12V battery.
For instructions, call Tesla. If a situation
occurs where you cannot disengage the
parking brake, use tire skids or transport
Model S for the shortest possible distance
using wheeled dollies. Before doing so,
always check the dolly manufacturer’s specifications and recommended load
capacity.
Instructions for Transporters
150Model S Owner's Manual

Connect the Tow Chain
The method used to connect the tow chain depends on whether Model S is equipped with
a towing eye (located in the front trunk).
If not equipped with a towing eye:
1. Attach the tow chains to the large hole on
each of the rearmost lower suspension arms underneath the front of the vehicle.
2. To protect the underbody from any
damage that could be caused by the tow
chains, place a 2" x 4" piece of wood
between the tow chains and the
underbody.
Caution: Before pulling, position the
wood between the tow chain and the
underbody to ensure the underbody is protected from any damage that couldbe caused by the tow chain.If equipped with a towing eye:
1. Remove the nose cone.
Insert a plastic pry tool into the top right
corner, and gently pry the nose cone
toward you. When the clip releases, pull
the nose cone toward you, without
twisting or bending, to release the three
remaining clips.
2. Insert the towing eye.
Fully insert the towing eye (found in the
front trunk) into the opening on the right
side, then turn it counter-clockwise until securely fastened.
3. Attach the tow chain to the towing eye.
Caution:
Before pulling, make sure the
towing eye is securely tightened.
Instructions for Transporters
Roadside Assistance151

Pull Onto the Trailer and Secure theWheels
Secure wheels using chocks and tie-down
straps:
• Ensure any metal parts on the tie-down straps do not contact painted surfaces or
the face of the wheels.
• Do not place straps over body panels or through the wheels.Caution: Attaching straps to the chassis,
suspension or other parts of the vehicle's
body may cause damage.Caution: To prevent damage, do not
transport Model S with the tires directly
on the ground.
Instructions for Transporters
152Model S Owner's Manual