Traction TESLA MODEL S 2015 User Guide

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

tire repair kitinflating with air only 116
inflating with sealant 115
replacing the sealant canister 117tiresall-season 111
balancing 110
chains 112
industry glossary of terms 148
inspecting and maintaining 110
pressures, how to check 109
quality grading 147
replacing 111
replacing a tire sensor 113
rotation 110
specification 144
summer 111
temperature grades 147
tire markings 145
tire sealant 114
traction grade 147
treadwear grade 147
winter 112
touch up body 120
touchscreenclean mode 119
cleaning 119
Controls 74
overview 72
Settings 77
software updates 99
tow chain, connecting 151
Tow mode 150
towing 150
towing a trailer 137
towing instructions 150
TPMSFCC certification 158
overview of 112
traction control 54
trademarks 153, 154
traffic alerts 86
Traffic-Aware Cruise Control 60
trailer hitches 137
transmission specifications 140
Transport Canada, contacting 156
transporting 150
trip chart 70
trip information 69
trunk, front 12
trunk, rearchild protection lock 7
disabling interior handle 7
TuneIn 85
turn signals 50
U
uniform tire quality grading 147
Units & Format 77unlockingtrunk, front 12
trunk, rear 10
unlocking and locking doors 4
unlocking when key doesn't work 7
USB devicesconnecting 87
playing audio files from 86
USB ports 87
V
vehicle certification label 136
Vehicle Identification Number (VIN) 134
vehicle loading 135
vent, sunroof 15
ventilation 82
VIN (Vehicle Identification Number) 134
volume control 72
W
walk-away locking 7
Wall Connector 102
warning flashers 50
warning lights, summary of 44
washer fluid, topping up 125
washer jets, cleaning 121
washers, using 51
weight specifications 139
wheel chocks 152
wheelsalignment 110
replacing 111
specifications 143
Wi-Fi, connecting to 98
windshield washer fluid, topping up 125
winter tires 112
wiper blades, replacing 121
wipers and washers 51
wipers, de-icing 51
X
XM radio 85
Index
164Model S Owner's Manual