Safe Weight for a Roof Box

Never exceed the permissible gross vehicle weight as specified by the manufacturer. Also ensure that you do not exceed the maximum roof load as prescribed by the car manufacturer.

The safe weight for a car roof can be affected by the width of the box and the length of the roof bar. Below are a few examples using a roof box with a width of 55cm.

useful info for roof boxes

Weight of the roof bars
+ Weight of the roof box
+ Weight of the load

= actual roof load