Towing a trailer with 2019 Jimny

I regularly tow several different trailers, including a ~500kg unbraked trailer behind my Jimny. It tows absolutely fine but an unbraked trailer extends the stopping distamce significantly. Do so at your own risk!

Re. the 85% rule, I think it still has it's place for caravans and those that rarely tow anything else, but it should not be applied to towing in general. A caravan is a big empty box, so to be of any significant weight they tend to be massive. It's the size that is more of an issue than the weight. A ton of sand in my 8x4 trailer handles perfectly well behind the Jimny at 60mph. A 1,300kg caravan would be a completely different matter. Wind resistance alone would make it unfeasable to tow for any distance.

Thank you guys for your replies!

I live in Georgia and nobody cares about your trailer weight, police only cares for plate number and documents, so that's not a problem for me. 

My trailer is 140kg with motorcycle mounts, Husqvarna FE350 weighs wet 105kg, so two of them is 210kg. 210+140=350kg + passenger + luggage will reach 450-470kg. I just want to make sure, that it's safe for myself and for Jimny too. Upgrading Jimny brakes to braided brake lines, will make a difference? 
 

I would have thought that your passenger will be in the Jimny and if you put as much weight in the car as you can then you should be close to the 350kg limit so it probably isn’t going to be a problem.

More weight in the car helps with stability and as long as the brakes are good and powerful then adding weight helps under braking. Just avoid fast corners and make sure the trailer is well balanced, the nose weight on the Jimny is only 75kg

The caravan Clubs figure for towing is based on analysis of tested combinations but it cant take into account the ability of the driver.
I drove a walk through panel van towing a twin axle trailer loaded with 20 motor trail bikes. All up weight about 5 tons. I was operating a trail park for North Tyne CC. I passed a test for the van and then the van and trailer. This involved a series of tests including reversing the combination into parking areas denoted with traffic cones. Now if all potential caravan / trailer drivers had to pass a test that included normal traffic situations then road safety would be improved and maybe the Caravan Club would be able to increase the 85% figure that they specify at present.
I am aware that the clubs 85% is not a governments figure which is why I have made the comment above but I believe the figure is realistic because it is based on tested situations. The club is also calling for statutory testing for all potential and existing drivers wanting to tow.

Roger