Which technician is correct about lugnut tightening procedures?

The correct choice indicates that Technician B is correct regarding lugnut tightening procedures. Proper lugnut tightening is crucial for vehicle safety and performance, particularly in preventing wheel detachment while driving.

Technician B's procedure likely adheres to the industry standard of using the proper torque specifications, which are usually provided by the vehicle manufacturer in the owner’s manual. This specific torque ensures that the lugnuts are tightened securely enough to keep the wheel in place but not so tight that it risks damaging the wheel or brake components.

Furthermore, it is important that lugnuts be tightened in a star pattern, which promotes even distribution of pressure across the wheel and prevents warping or uneven wear. This technique also allows for better handling and reduces the likelihood of vibrations while driving.

Understanding the correct torque sequence and values is essential for all technicians performing tire service. Ensuring that the lugnuts are tightened correctly enhances vehicle safety, as improperly tightened lugnuts can lead to serious consequences, such as wheel failure during operation.