A Motorcycle Gives a Tow Truck Almost Nothing to Hold
Start with what is missing. A car in park has a parking pawl locked into the transmission, four contact patches spreading its weight, and tow eyes or frame rails the manufacturer rated for pulling. Take all three away and you have a motorcycle: two contact patches in a line, a gearbox with no park position, and a frame whose most grabbable parts are the ones already carrying the most stress.
Three things a car offers a tow operator that a bike simply does not:
- No park position. A bike held by its gearbox alone can still be rolled, and a sidestand is a kickstand, not a brake.
- Two contact patches, in line. A motorcycle does not stand up on its own at any point in the process, loaded or unloaded.
- No rated recovery points. Handlebars, levers, mirrors and the sidestand all move or bend under load. None of them is an anchor.
The Straps Are the Tow, Not the Truck
The manufacturers say it outright. The owner's manual for a current Indian Scout instructs transporters not to tow the motorcycle with another vehicle, because towing will impair the motorcycle's steering and handling. That is the whole case for carrying a bike rather than pulling it, and it is where the comparison with cars stops being useful. For a car, which truck shows up is a real question with two good answers. For a motorcycle it is not a question at all.
Once a bike is on a deck it stops being a vehicle and becomes cargo, and cargo has rules. The Federal Motor Carrier Safety Administration sets a floor on restraint: the aggregate working load limit of the tiedowns must be at least one-half the weight of the article, and cargo must be firmly immobilized or secured on or within a vehicle by structures of adequate strength.
The count matters as much as the rating. Under those rules an article greater than five feet but less than ten, which covers nearly every road motorcycle, needs at least two tiedowns regardless of weight. Two is the floor, not the plan. Two straps can hold a bike down against one direction of travel and leave it free to pivot in another, which is why a motorcycle tow in practice runs four, pulling against each other, with the front wheel already sitting in a chock before the first strap is tightened. A flatbed does the easy part. The straps do the work.