Uniform Tire Quality Grading System (UTQGS)
This information relates to the tire grading system developed by the U.S. National Highway
Traffic Safety Administration for grading tires by tread wear, traction, and temperature
performance.
▼ Tr e a d We a r
The tread wear grade is a comparative rating based on the wear
rate of the tire when tested
under controlled conditions on a specified government test cour se.
For example, a tire graded 150 would wear one-and-a-half times as well on the government
course as a tire graded 100.
The relative performance of tires depends upon the actual condi tions of their use, however,
and may depart significantly from the norm because of variation s in driving habits, service
practices and differences in ro ad characteristics and climate.
▼Traction-AA, A, B, C
The traction grades, from highest
to lowest, are AA, A, B, and C. These grades represent the
tire's ability to stop on wet pavement as measured under contro lled conditions on specified
government test surfaces of asphalt and concrete. A tire marked C may have poor traction
performance.
WA R N I N G
The traction grade assigned to this tire is based on braking (straight ahead) traction tests and
does not include acceleration cornering (turning), hydroplaning, or peak traction
characteristics.
▼ Temperature-A, B, C
The temperature grades A (the hi
ghest), B, and C, represent the tire's resistance to the
generation of heat and its ability to dissipate heat when teste d under controlled conditions
on a specified indoor laboratory test wheel.
Sustained high temperature can cause the material of the tire to degenerate and reduce tire
life, and excessive temperatures can lead to sudden tire failure.
Grade C corresponds to a level of performance which all passeng er vehicle tires must meet
under the Federal Motor Vehicle Safety Standard No. 109. Grades B and A represent higher
levels of performance on the labo ratory test wheel than the minimum required by law.
Customer Information and Reporting Safety Defects
Uniform Tire Quality G rading System (UTQGS)
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Tire Maintenance
Improper or inadequate vehicle maintenance can cause tires to w ear abnormally. Here are
some important maintenance points:
▼ Tire Inflation Pressure
Inspect all tire pressu
re monthly (including the spare) when th e tires are cold. Maintain
recommended pressures for the best ride, top handling, and mini mum tire wear. Use the
pressures specified on the vehicle tire information placard or tire label for optimum service.
▼Tire Rotation
To equalize tread wear, rotate the tires every 12,000 km (7,500
miles) at the latest or sooner
if irregular wear develops. Mazda recommends to rotate every 8, 000 km (5,000 miles) to
help increase tire life and d istribute wear more evenly.
Do not include (TEMPORARY USE ONLY)
spare tire in rotation.Forward
Inspect the tires for uneven wear and damage. Abnormal wear is
usually caused by one or a
combination of the following:
Incorrect tire pressure
Improper wheel alignment
Out-of-balance wheel
Severe braking
After rotation, inflate all tire pressures to specification (pa ge 9-7) and inspect the lug nuts
for tightness.
CAUTION
Rotate unidirectional tires and radial tires that have an asymmetrical tread pattern or studs
only from front to rear, not from side to side . Tire performance will be weakened if rotated
from side to side.
Customer Information and Reporting Safety Defects
Tire Information (U.S.A.)
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Index
Lighting Control................................4-71
Lights-on Reminder.......................... 7-47
Light BulbsReplacement................................ 6-40
Specifications.................................9-6
Lubricant Quality ................................ 9-4
Luggage Compartment......................5-74
Cargo Securing Loops ................. 5-74
Cargo Sub-Compartment............. 5-74
Luggage Compartment Light............ 5-58
M
Maintenance
Information.................................... 6-2
Scheduled.......................................6-4
Map Lights........................................ 5-58
Mazda Connect................................. 5-34 Appendix..................................... 5-46
Appendix (Mazda Connect (Type
A))................................................5-26
Appendix (Mazda Connect (Type
B))................................................ 5-46
Connected Service... .................... 5-55
Mazda Connect Basic
Operations....................................5-38
Mazda Connect Basic Operations
(Mazda Connect (Type A))..........5-17
Mazda Connect Basic Operations
(Mazda Connect (Type B)).......... 5-38
Mazda Connect (Mazda Connect
(Type A))..................................... 5-14
Mazda Radar Cruise Control with Stop &
Go function (MRCC with Stop & Go
function).......................................... 4-145 Close proximity warning........... 4-149
Cruise control function.............. 4-157
Display indication......................4-147
Setting the system..................... 4-150
Stop hold control....................... 4-156
Message Indicated in Multi-information
Display.............................................. 7-45
Message Indicated on Display.......... 7-43
Meters................................................ 4-11
MirrorsOutside mirrors..... ....................... 3-32
Rearview mirror.......................... 3-34
Mirror Defogger......... ....................... 4-83
Moonroof...........................................3-40
Multi-information Display (Type
A).......................................................4-13
Multi-information Display (Type
B)....................................................... 4-30
Multi-information Display (Type
C)....................................................... 4-46
O
Off-Road Traction Assist Off-Road Traction Assist indicator
light............................................ 4-109
Off-Road Traction Assist
switch......................................... 4-110
Outside Mirrors......... ........................ 3-32
Overhead Console............................. 5-72
Overhead Lights................................ 5-58
Overheating....................................... 7-23
Overloading....................................... 3-52
Owner Maintenance Closing the hood...... ................... 6-18
Engine compartment overview.... 6-19
Key battery replacemen t..............6-33
Opening the hood........................ 6-17
Owner maintenance
precautions................................... 6-15
P
Parking Sensor System (Mazda Connect
(Type A))......................................... 4-276
Sensor detection range.............. 4-278
10-7
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