The world’s biggest monster traillie is a ridiculous concept that on paper shouldn’t work at all. It weighs 223kg, the suspension is three inches taller than the standard R1200GS and with a 33-litre tank full of fuel you almost need two people to lift it off the sidestand. But in reality it’s one of the best mile-eating bikes money can buy and one of the quirkiest, most interesting bikes on the road today.