Originally Posted by beamishken
does a sub 750kg trailer require a chain? never did the last time I towed one ( which was a long time ago to be fair)
Not sure the type approval stuff says "chain". Basically over 750 you need a breakaway cable that when the hitch fails the handbrake applies then snaps and leave the trailer stationary on the motorway without showing brake lights for the car following to close to plough into.
For under 750 as you have no brakes it might roll back down a hill on the motorway which is REALLY bad so you have to attach your trailer with a secondary coupling device. So when the axle fails you drag it behind you digging a rut into the carriageway ;-)
I'm under the impression everything is supposed to be type approved. But I struggle to find chains with E mark. None of the unbraked I've ever bought has had a chain. One had a 3mm wire loop
So at 60mph ... On The motorway up hill ... Your 750kg trailer disconnects .. What force does the chain need to take?
How do I know the 3mm wire is strong enough?