What must an owner file if the operating weight of a commercial vehicle changes?

When the operating weight of a commercial vehicle changes, it is essential for the owner to file a new REG 4008 declaration. This form is specifically designed to report changes in the vehicle's weight to ensure that the registration reflects the current status of the commercial vehicle. The REG 4008 helps in adjusting the fees and taxes associated with weight classifications, as commercial vehicles are often subject to weight-based regulations.

Maintaining accurate records of a vehicle's operating weight is crucial for compliance with transportation laws and regulations, including those related to safety and road usage taxes. If the weight changes significantly, addressing it through the appropriate form helps the Department of Motor Vehicles (DMV) keep accurate records, which is vital for both legal and operational reasons.

The other options are associated with different processes. The REG 5000 form is for vehicle change of ownership or status, registration renewal forms pertain to renewing the vehicle's registration, and inspection reports are typically required to prove that the vehicle meets safety and emissions standards. Therefore, submitting a new REG 4008 declaration is the specific action required when a commercial vehicle's operating weight is altered.