Not sure why Hymer have put MRO there. In fact it's 'Axle 0' or nosewheel and is the weight limit on the tow hitch. 'Axle 1' is your only axle weight limit and matches the vans MTPLM. Some vans have an MTPLM lower than their Axle limit but the MTPLM allocated by the manufacturer is the load limit, unless upgraded with their permission. MIRO/MRO isn't legally required to be plated and in the case of Touring vans the brochure MIRO may well be much less than the vans actual weight after factory fit options are added.