Red Seal Truck and Transport Mechanic Practice Exam

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What does the Tire Load Index indicate?

A numerical code that represents a tire's tread pattern
A numerical code that indicates the maximum load a tire can safely carry
A measurement of tire pressure in PSI
A calculation of tire mileage before replacement

The correct answer is: A numerical code that indicates the maximum load a tire can safely carry

The Tire Load Index is a numerical code that indicates the maximum load a tire can safely carry when inflated to its maximum pressure. This index is crucial for ensuring that tires are matched appropriately to the vehicle and its intended use, as it helps prevent overloading which can lead to tire damage, reduced performance, and potentially hazardous situations. Each tire has a specific load index, and it is vital for mechanics and vehicle owners to refer to this index to choose the right tires that can support the weight of the vehicle and its cargo effectively. Ensuring that tires are used within their load index rating helps maintain vehicle safety, traction, and overall handling performance.