Kerbweight

Have you contacted the club yet as was suggested?

No point really. As Lutz has high-lighted, there is no fixed definition of kerbweight in law, therefore the "85%" rule is an irrelevant guess broadly swept into folklore with a will to make matters safer. In law the only weights that matter are the plated weights of the vehicle and caravan.

That’s exactly what I posted to you at the very beginning in your first thread. It is no more than a guide with no standing in law but you seemed to want the club to change to something else🤷🏻‍♂️

https://www.caravanclub.co.uk/club-together/discussions/information-technical-tips-advice/caravans/outfit-matching-service/

It must of been posted somewhere else or its been Deleted User.

Nope, follow the link, it's there.

But there is a fixed definition of kerbweight in law, the trouble is that few stick to it. Instead, they create their own definition and expect others to know what it includes. The situation isn't made any easier by the fact that the vehicle manufacturer is not required to document kerbweight anywhere.

Mass in running order (or mass in service as the V5c calls it) is no better because it only refers to the actual weight of the one vehicle that was submitted for type approval. Other vehicles of the same type or model but with further factory fitted options may weigh more, but their mass in running order remains the same.

The closest documented figure is the 'actual mass' shown as item 13.2 in the vehicle's certificate of conformity. It is only a calculated value, but at least it does take into account the full equipment specification relating to that particular vehicle.

surely the correct weight would be done on a weighbridge with full tank of fuel and no driver. you can then work out the match from that. peace of mind for yourself. 

the answer to a vehicle kerb weight is on the log book

simples

Not all log books have the kerbweight on them and not all have the "mass in service" weight either. 

Possibly there's no legal requirement to publish the kerbweight of vehicles here in the UK was because all have manufacturing tolerances of +/- 5%, which in the pre-automation days, was probably the reason why 20 identical vehicles coming off the production line, would all weigh differently. With today's technology, they should all weigh the same (or have the same mass) but as I recall, the tolerances still remain.