Any idea what this means?

[bananaman1]

Recently purchased a Toyota rav 4 to tow a caravan with......any idea what all this info means that is on the tow bar ? I assume the 90kg is nose weight

[Kenty]

All straight forward except possibly the 'd' value which is :-
Design, Testing and Certification
The towbar manufacturer requires the following vehicle data to design a towbar:
Manufacturer's specified fixing points.
Gross vehicle weight or mass (GVW or GVM)
Gross Trailer Weight or Mass (GTW or GTM) that the model of vehicle can tow.
This information is included in the Vehicle's Handbook. From this data the towbar manufacturer constructs a test load, called D Value, which will be used to test the towbar. As well as providing the test load, the towbar manufacturer is obliged to include a D value in kn on the towbar identification plate.
"D" Value
The "D" value is calculated as follows:
(GVW x GTW ) / (GVW + GTW) x 9.81/1000 (gravity)= kn
Where GVW is Gross Vehicle Weight, and GTW Gross Trailer Weight.
The maximum D value for an M1 vehicle is 17.7kn that represents a GVW of 3500 kgs towing GTW of 3500kgs.
It is possible to design a towbar that fits the whole range of models of one particular vehicle. Because Towing Capacity is related to GVM then each model may have a different value for D. To prevent overload of the Towing Vehicle refer to the Vehicle Manufacturers' Handbook to confirm the GTW for your particular model.

'S' is the max permitted nose weight.

Edited by Kenty on Sunday 31st July 16:42

[bananaman1]

Thanks :-)