Who is correct about using lubricant to seat a tire on a wheel rim?

Using lubricant to seat a tire on a wheel rim is a common practice, and it is crucial to understand how it works to ensure proper tire installation. When a technician uses lubricant, they typically apply it to the bead of the tire, which is the area where the tire makes contact with the rim. This lubrication helps the tire slide into its proper position on the rim during inflation, reducing the risk of damaging the tire or rim and helping achieve a better seal.

The correct usage of lubricant assists in overcoming friction that can occur as the tire bead tries to seat itself. Proper seating is essential to ensure that the tire does not leak air, which could lead to safety issues when the vehicle is in operation.

In contrast, if lubricant is not used appropriately or is used excessively, it could potentially create issues, such as slippage when the tire is not properly seated, making it difficult to achieve an airtight seal.

Technician A's assertion about the correct application of lubricant highlights the importance of this practice in ensuring the tire is safely and effectively mounted to the wheel rim.