Ortlieb on motorcycles
My experience of using Ortleib is primarily on cycles both on the rear pannier and front lowriders. They have always been excellent and without problem. Only one little winge on my older models (some 10 years old) the plastic bar holding the top pannier carrier mounts will bend when the pannier is stuffed full making fitting to the rack a little tricky. Pack them properly and there is no trouble.
Remember that using them off road on a bicycle they get far harder hits than when protected by the suspension of a motorcycle.
For a temporary set up on a journey of some 1500 miles I rigged up a couple of low loader racks using the motorbike rear rack mounting points, a luggage strap and some cable ties. The racks held position and the panniers were still instant on an off forming a good base for drum bag and tent.
Some gentle of road, many miles of 90+mph (it is a Highland
) motorway and slow weaving through thick traffic, no problem. Good stability, narrow and cheap. Also I snagged a road sign doing an idiot manoeuver out of a car park at 25mph, enough to hole the pannier but did not knock it of the bike or rip off the rack. Rigid 'mortuary boxes' would have either had me off or had a costly load of damage. Also they are significantly narrower making filtering far easier - see photos
"The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt." -Bertrand Russell