What could be a reason for rejecting the wheel assembly during inspection?

When inspecting a wheel assembly, one critical reason for rejection is the presence of objects sticking below the edge of the wheel rim. This situation can pose a significant safety hazard, as debris can affect the integrity of the wheel and potentially lead to tire failure or loss of control while driving. Items lodged in this area can also interfere with the proper sealing of the tire, resulting in air leaks or uneven wear. Therefore, ensuring that the wheel rim is clear of any obstructive materials is essential for maintaining vehicle safety and performance.

While rust on rims, mismatched wheel sizes, and outdated tire tread designs are all concerning and can affect vehicle operation, the immediate impact of foreign objects on the wheel assembly's safety is particularly critical, making it a valid reason for rejection during inspection.