I have just had my quick-release trailer tow hitch fitted at my dealer LeTech. As I have reported before, the height of the tow hitch fitted by INEOS was almost good. Together with my trailer dealer, we realised that the double-axle car transport trailer was almost horizontal. It was about 5-7 cm too high at the front.
I know that many people here in the forum have used different adapter plates. However, none of these are approved or officially authorised by INEOS in Germany.
This tow hitch manufactured by Rockinger fits exactly on the trailer hitch of the INEOS Grenadier and complies with the regulations. The ball head sits 7 cm lower than the factory-fitted one. I bought a second adapter plate so that I can quickly attach a wire basket or a bicycle carrier as required. I am also planning to buy a jaw coupling, also from Rockinger, to tow agricultural trailers. However, I still have to look at the diameter of the eyelets on the trailers.
The tow hitch I have now fitted can also tow 3.5 .
Advantage: If I don't need to tow anything, the tow hitch goes in the boot and doesn't hang around at the rear.
@Norb-TX once posted a link to a Youtube video from Hedin Switzerland here. The Rockinger system is also used here. However, this does not appear to be the original towbar. My dealer mentioned, that this adaptation is certainly not authorised in Germany.