Honda GOLDWING GL1800/A 2015 Owner's Manual page 225

Transporting Your Motorcycle
If your motorcycle needs to be transported, it should be carried on a motorcycle
trailer, or a truck or trailer with a flatbed area. Do not tow your motorcycle, as
towing can seriously damage the transmission.
When contacting a towing or transporting service, be sure to ask if they have a
flatbed area, a loading ramp or power ramp to safely lift the motorcycle, and
motorcycle tie-down straps.
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