What is the difference between gross combination weight (GCW) and gross combination weight rating (GCWR)?

Gross Combination Weight (GCW) represents the total weight of a combination of vehicles, including all its components: the towing vehicle, trailer, cargo, and any passengers or additional loads. It is essentially the actual weight measured when the vehicle is fully loaded while on the road.

On the other hand, Gross Combination Weight Rating (GCWR) refers to the manufacturer's specified maximum safe weight that a combination of vehicles can safely carry. This rating is determined by the vehicle manufacturer and includes the weight of the towing vehicle, trailer, cargo, and any additional passengers. It sets a limit to prevent exceeding safe operational thresholds and protects both the vehicle and any cargo being transported.

The distinction lies in the fact that GCW is a real-time measurement of weight while driving, whereas GCWR is a predefined limit established to ensure safety and vehicle integrity when loaded.

This clarity helps drivers understand how much weight they are legally permitted to tow or carry while also ensuring they do not exceed safe operational limits.