Audi Q3: Uniform tire quality grading
- Tread wear
- Traction AAA BC
- Temperature ABC
Quality grades can be found where applicable on
the tire side wall between tread shoulder and
maximum section width .png)
fig. 154.
For example: Tread wear 200, Traction AA, Temperature A.
All passenger car tires must conform to Federal Safety Requirements in addition to these grades.
Tread wear
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 course.
For example, a tire graded 150 would wear one and one half (1 1/2) times as well on the government course as a tire graded 100.
The relative performance of tires depends upon the actual conditions of their use, however, and may depart significantly from the norm due to variations in driving habits, service practices and differences in road characteristics and climate.
Traction
The traction grades, from highest to lowest, are AA, A, Band C. Those grades represent the tire's ability to stop on wet pavement as measured under controlled conditions on specified government test surfaces of asphalt and concrete. A tire marked C may have poor traction performance.
Temperature
The temperature grades are A (the highest), B, and C, representing the tire's resistance to the generation of heat and its ability to dissipate heat when tested 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 temperature can lead to sudden tire failure.
The grade C corresponds to a level of performance which all passenger car tires must meet under the Federal Motor Vehicle Safety Standard No. 109. Grades 8 and A represent higher levels of performance on the laboratory test wheel than the minimum required by law.
WARNING
The traction grade assigned to this tire is based on straight-ahead braking traction tests, and does not include acceleration, cornering, hydroplaning or peak traction characteristics.
WARNING
The temperature grade for this tire is established for a tire that is properly inflated and not overloaded. Excessive speed, underinflation, or excessive loading, either separately or in combination, can cause heat buildup and possible tire failure.
WARNING
Temperature grades apply to tires that are properly inflated and not over or underinflated.
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Tire pressure monitoring system
General notes
Each tire, including the spare (if provided),
should be checked monthly when cold and inflated
to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard o
General information
Regular, proper care helps to maintain your vehicle's
value. It can also be a requirement when
submitting warranty claims for corrosion damage
and paint defects on the body.
The required cleaning and
SEE MORE:
Fastening and unfastening safety belts
Fig. 60 Belt buckle and belt latch
Fig. 61 Releasing the belt buckle from the belt latch
Fastening the safety belt
Pull the safety belt by the belt buckle evenly
across your chest and lap.
Insert the belt buckle in the belt latch belonging
to the seat until it audibly engages
fig. 60.
Pull
Operating in the cockpit
Fig. 78 Deluxe automatic climate control with 2 zones/3 zones: controls
Observe the safety precautions.
The functions can be switched on and off by
pressing the buttons or adjusted by turning the
knob. When the function is switched on, the LED
in the respective button or knob turns on.
Cooling mod
