Caravanning without a towcar

When did you find out about weights and how long have you been towing like this. You don't give much detail of car or caravan so posting details might get better answers. How far out is the match and who told you. 

Do you know anybody personally who you could trust and who would tow your van to a site and back for you?  

If we had a problem, our son would willingly tow ours if we asked him.

Worst case - put holidays on hold for a little while and work on replacing your current car. 

Is your van extremely heavy? I'm wondering if a lighter weight van would solve the problem?

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Th e OP wrote Peugeot 5008 David. Some have towing limit of 1200

 Some French cars have a tow limit published which assumes the car is emty apart from driver and a bit. In other words a low maximum Train Weight. 

I assume that the OP knows the legal limits and has taken this from the plated figures given on the car's B post. (Maximum Train Weight minus Maximum Car Weight = Maximum Trailer Weight).

It depends on the precise figures for the outfit involved but, it may be possible for the car with driver to tow the caravan empty or very lightly loaded to site and then make a second journey with passengers and luggage. This would at least mean the car would be available for the family whilst on holiday. For vehicle limits it is the actual weights which are used to determine compliance (whereas for licence limits it is the plated weights).

It’s a 5008 and the current max braked towing weights range from 950 up to 1800kg. 

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I think the OP knows his car model and what it can tow.