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 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.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), (Y)=vehicle
Tire and Loading Glossaries
General Wheel and Tire Terms
Accessory 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
Pressure
The maximum pressure to which the tire should be inflated. This pressure is given on the
tire side wall in psi (lbf/in2).
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 3.
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 (1.4 kg) more
than the standard items that they replaced, and are not already considered in curb or
accessory weights.PSI (lbf/in2)Pounds per square inch (the unit used to measure tire pressure).Recommended Tire
Inflation Pressure
Tire 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 (68 kg) plus the rated amount of load/luggage.
Load Carrying Definitions
Normal occupant weight68 kilograms (150 lbs) times the number of occupants specified in the second column
of the tables for calculating load limits (see
Vehicle Loading on page 180).
Occupant distributionDistribution of occupants in a vehicle.Passenger car tireA tire intended for use on passenger cars, multipurpose passenger vehicles, and trucks, that have a gross vehicle weight rating (GVWR) of 10,000 lbs (4536 kg) or less.Rim diameterNominal diameter of the bead seat.Rim size designationRim diameter and width.Rim type designationThe manufacturing industry
Vehicle normal load on the
tireLoad on an individual tire that is determined by distributing to each axle its share of
the curb weight, accessory weight, and normal occupant weight and dividing by two.
Pneumatic Radial Tire Definitions
Bead separationA breakdown of the bond between components in the bead.Bias ply tireA pneumatic tire in which the ply cords that extend to the beads are laid at alternate angles
substantially less than 90 degrees to the center line of the tread.CarcassThe tire structure, except tread and sidewall rubber which, that when inflated, bears the load.ChunkingThe breaking away of pieces of the tread or sidewall.CordThe strands forming the plies in the tire.Cord separationThe parting of cords from adjacent rubber compounds.CrackingAny parting within the tread, sidewall, or inner liner of the tire extending to cord material.Extra load tireA tire designed to operate at higher loads and higher inflation pressure than the
corresponding standard tire.GrooveThe space between two adjacent tread ribs.Inner linerThe layer(s) forming the inside surface of a tubeless tire that contains the inflating medium
within the tire.Inner liner
separationThe parting of the inner liner from cord material in the carcass.Load ratingThe maximum load that a tire is rated to carry for a given inflation pressure.Maximum load
ratingThe load rating for a tire at the maximum permissible inflation pressure for that tire.Measuring rimThe rim on which a tire is fitted for physical dimension requirements.Open spliceAny parting at any junction of tread, sidewall, or inner liner that extends to the cord material.Outer diameterThe overall diameter of an inflated new tire.Overall widthThe linear distance between the exteriors of the sidewalls of an inflated tire, including
elevations due to labeling, decorations, or protective bands or ribs.PlyA layer of rubber-coated parallel cords.Ply separationA parting of rubber compound between adjacent plies.Pneumatic tireA mechanical device made of rubber, chemicals, fabric and steel or other materials, that,
when mounted on an automotive wheel, provides the traction and contains the gas or
fluid
that sustains the load.
Radial ply tireA pneumatic tire in which the ply cords that extend to the beads are laid at substantially 90
degrees to the center line of the tread.Reinforced tireA tire designed to operate at higher loads and at higher inflation pressures than the
corresponding standard tire.Section widthThe linear distance between the exteriors of the sidewalls of an inflated tire, excluding
elevations due to labeling, decoration, or protective bands.SidewallThe portion of a tire between the tread and bead.Sidewall separationThe parting of the rubber compound from the cord material in the sidewall.
Wheels and Tires
191Specifications
F
factory defaults, restoring: 122
factory reset: 122
fan speed, interior: 123
favorites (Media Player): 134
Favorites (navigation): 129
FCC certifications: 203
features, downloading new: 148
firmware (software) updates: 148
flash drives, playing audio files from: 134
flashers, warning: 53
floor mats: 169
fluids: 159, 171
replacement intervals: 159
reservoirs, checking: 171
fog lights: 51
forward collision warning: 112
front license plate: 177
front passenger detection: 38
front trunk: 16
G
G-meter: 65
garage doors, opening: 144
gates, opening: 144
GAWR: 180
gears: 50
glovebox: 19
Glovebox PIN: 140
Gross Axle Weight Rating: 180
Gross Vehicle Weight Rating: 180
ground clearance: 182
GVWR: 180
H
Handling Balance (Track Mode): 65
hazard warning flashers: 53
head supports: 24
headlights: 51, 52
after exit: 52
controlling: 51
high beams: 52
heating: 123
high beam headlights: 52
high voltage: 151, 160, 186
Battery specifications: 186
components: 151
safety: 160
hills, stopping on: 64
hitches: 181
Home location: 131
HomeLink: 103, 144
programming and using: 144
when using Summon: 103
hood: 16
horn: 45
hub caps: 163
I
I
recent (Media Player): 134
Recents (navigation): 129
recording videos: 70, 142
recording videos (Track Mode): 65
regenerative braking: 59
regenerative braking, in Track Mode: 65
relative speed limit: 115
release notes: 148
restarting the touchscreen: 48
Reverse gear: 50
RFID transponders: 174
roadside assistance: 194
roof racks: 181
rotating tires: 162
Round Trip Energy (navigating): 131
S
safety defects, reporting: 203
safety information: 29, 34, 42
airbags: 42
child seats: 34
seat belts: 29
Schedule: 157
schedule service: 149
scheduled charging: 157
scheduled departure: 157
using: 157
seat belts: 27, 28, 168
cleaning: 168
in a collision: 28
overview of: 27
pre-tensioners: 28
wearing when pregnant: 28
seat covers: 26
seat heaters: 123, 125
seating capacity: 180
seats: 23, 123
adjusting: 23
heaters: 123
security settings: 140
sensors: 78
Sentry Mode: 140
service data recording: 200
service intervals: 159
Settings, erasing: 122
shifting gears: 50
Show Calendar Upon Entry: 138
Side Clearance (Summon): 103
side collision warning: 109
slip start: 61
Smart Summon: 106
smartphone: 6
authenticating as a key: 6
Software Reinstall: 148
software reset: 122
software update preferences: 148
software updates: 148
specifications: 182, 184, 186
12V battery: 186
brakes: 184
cargo volume: 184
dimensions: 182
exterior: 182
High Voltage Battery: 186
interior: 182
motor: 184
steering: 184
subsystems: 184
suspension: 186
tires: 186
transmission: 184
weights: 184
wheels: 186
speed assist: 115
Speed Limit Mode: 121
speed limit warning: 115
Stability Assist (Track Mode): 65
stability control: 61
starting: 48
steering specifications: 184
steering wheel: 51
lights, controlling: 51
steering, automatic: 86
streaming radio: 133
streaming services: 133
summer tires: 165
Summon: 103
Summon Distance: 103
supercharging: 158
described: 158
idle fees: 158
pay-per-use fees: 158
suspension specifications: 186
T
telematics: 200
temperature: 54, 123, 153, 189
Battery (high voltage), limits: 153
cabin, controls for: 123
outside: 54
Index
tires: 189
Teslacam: 70
tie-down straps: 195
tilt/intrusion detection: 140
Tire and Loading Information label: 180
tire noise: 166
Tire Pressure Monitoring System: 164
overview of: 164
tire pressures, checking: 161
tires: 161, 162, 165, 166, 186, 187, 189
all-season: 165
balancing: 162
chains: 166
inspecting and maintaining: 161
pressures, how to check: 161
quality grading: 189
replacing: 162
replacing a tire sensor: 165
rotation: 162
specification: 186
summer: 165
temperature grades: 189
tire markings: 187
traction grade: 189
treadwear grade: 189
wheel configuration: 161
winter: 165
toll system transponders, attaching: 174
torque specifications: 184
touch up body: 169
touchscreen: 4, 45, 148, 168
cleaning: 168
overview: 4
restarting: 45
software updates: 148
towing a trailer: 181
towing instructions: 194
Toybox: 197
TPMS: 164
overview of: 164
Track Mode: 65
Tracking Disabled: 128
traction control: 61
trademarks: 199
Traffic Light and Stop Sign Control: 94
Traffic-Aware Cruise Control: 81
trailer hitches: 181
transmission specifications: 184
transponders, attaching: 174
Transport Canada, contacting: 203
Transport Mode: 194
transporting: 194
trip chart: 68
Trip Planner: 131
trunk, adjust opening height: 14
trunk, front: 16
trunk, rear: 14
turn signals: 53
U
ultrasonic sensors: 78
uniform tire quality grading: 189
Unlock On Park: 12
unlocking: 11
USB devices: 19, 134
connecting: 19
playing audio files from: 134
USB flash drive: 140
USB ports: 19
V
Valet mode: 43
vehicle certification label: 180
Vehicle Hold: 64
Vehicle Identification Number (VIN): 179
vehicle loading: 180
ventilation: 125
videos and recording: 70, 142
videos and recording (Track Mode): 65
VIN (Vehicle Identification Number): 179
volume control: 4
volume control (media): 133
W
Walk-Away Door Lock: 12
Wall Connector: 152
warning flashers: 53
washer fluid, topping up: 171
washer jets, cleaning: 170
washers, using: 57
weight specifications: 184
wheel chocks: 195
wheels: 162, 163, 186
aero covers, removing and installing: 163
alignment: 162
lug nut covers, removing and installing: 163
replacing: 162
specifications: 186
torque: 186
Wi-Fi, connecting to: 147
Index