Wow! I guess I can tow my TM at 160 km/h! That's like, 100 mph!
I'm not sure what Switzerland wants for documentation. I seriously can't imagine any manufacturer of wheels and tires making anything rated lower than 100 km/h. I think the limiting speed must be related to the handling characteristics of a trailer/tow vehicle combination. Maybe there is documentation that we don't normally see from manufacturers to certify that the TM is road worthy on north american freeways?