How many lug nuts should be present and properly secured on the vehicle?

The correct answer regarding the number of lug nuts that should be present and properly secured on a vehicle is typically determined by the manufacturer’s specifications for the specific vehicle. For many heavy trucks and commercial vehicles, 10 lug nuts is a common configuration, especially for wheels that have dual setups.

Having the proper number of lug nuts in place and securely tightened is crucial for ensuring that the wheel is safely attached to the axle and can handle the stresses encountered during operation. If the lug nuts are insufficient in number or not secured properly, it can lead to wheel detachment while the vehicle is in motion, posing a serious safety hazard.

The other options do not align with the typical configuration found on many vehicles. Certain vehicles may have more or fewer lug nuts, but for most commercial applications, 10 is a standard number that provides adequate security when properly tightened. It is essential to always refer to the specific vehicle's service manual for the exact specifications pertaining to lug nut quantity and torque settings.