Cold Tire Pressure; Load Rating; Maximum Inflation Pressure- Page 620

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Checking and Maintaining Tires

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Tire Labeling

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The tire identification number (TIN) is a group of numbers and letters that look like 
the example in the side column. TIN is located on the sidewall of the tire.

Cold Tire Pressure

 – The tire air pressure when the vehicle has been parked for at 

least three hours or driven less than 1 mile (1.6 km).

Load Rating

 – Means the maximum load that a tire is rated to carry for a given 

inflation pressure.

Maximum Inflation Pressure

 – The maximum tire air pressure that the tire can 

hold.

Maximum Load Rating

 – Means the load rating for a tire at the maximum 

permissible inflation pressure for that tire.

Recommended Inflation Pressure

 – The cold tire inflation pressure recommended 

by the manufacturer.

Treadwear Indicators (TWI)

 – Means the projections within the principal grooves 

designed to give a visual indication of the degrees of wear of the tread.

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Tire Identification Number (TIN)

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Glossary of Tire Terminology

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Tire Identification Number (TIN)

DOT B97R FW6X 2209

DOT: This indicates that the tire meets all 
requirements of the U.S. Department of 
Transportation.
B97R: Manufacturer's identification mark.
FW6X: Tire type code.
22 09: Date of manufacture.

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Week