service MAZDA MODEL 6 2021 Owner's Guide

Reporting Safety Defects (Canada)
Canadian customers who wish to report a safety-related defect a nd concern to Transport
Canada, Defect Investigations and Recalls, may telephone the to ll free hotline
1-800-333-0510, or go to the Road Safety website at:
https://www.tc.gc.ca/en/services/road.html
Customer Information and Reporting Safety Defects
Reporting Safety Defects
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Uniform Tire Quality Grading System (UTQGS)
This information relates to the tire grading system developed by the U.S. National Highway
Traffic Safety Administration fo r grading tires by tread wear, traction, and temperature
performance.
▼ Tr e a d We a r
The tread wear grade is a compara
tive 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 variations in driving habits, service
practices and differences in road 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 th is tire is based on braking (straight ahead) traction tests and
does not include acceleration cornering (t urning), hydroplaning, or peak traction
characteristics.
▼ Temperature-A, B, C
The temperature grades A (the highest), 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 t o 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 S afety Standard No. 109. Grades B and A represent higher
levels of performance on the laboratory test wheel than the min imum required by law.
Customer Information and Reporting Safety Defects
Uniform Tire Quality Grading System (UTQGS)
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Tire Maintenance
Improper or inadequate vehicle maintenance can cause tires to wear abnormally. Here are
some important maintenance points:
▼ Tire Inflation Pressure
Inspect all tire pressure monthl
y (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 distribute 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 9-8) 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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