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

Using lubricant when seating a tire on a wheel rim is an important practice to ensure a successful and safe tire installation. Technician A's understanding likely emphasizes the benefits of using proper lubricant to facilitate the tire's movement onto the rim, creating a proper seal between the tire bead and the rim edge. This not only makes the mounting process easier but also helps prevent damage to the tire and rim during the installation.

Using the appropriate lubricant can also help overcome any potential friction that might prevent the tire beads from fully seating in the correct position. This is crucial because a properly seated tire is necessary for the tire to maintain air pressure and perform safely.

In contrast, Technician B might either be misinformed about the necessity of lubricants or could be suggesting that lubricants are never to be used, which is not aligned with best practices in tire installation. Therefore, because Technician A correctly addresses the proper use of lubricant during the tire mounting process, emphasizing its role in achieving a secure fit, their position is deemed accurate.