There is actually a formula used to determine the turning radius of a motorcycle. I can't remember what that formula is off the top of my head, but, the average is about 19 feet. That, of course, is under optimum circumstances. I've seen "riders" that couldn't turn their bikes around in 30 feet!
An old motorcyclist told me once that the mark of a real motorcyclist is the ability to ride slowly and make a u-turn on a country two lane road. That, and the desire to be able to manuever around idiots that pull out of front of me or change their minds about turning off the road (or any number of other dangerous situations), keeps me practicing an Iron Cross at least once a month. I can do a tight u-turn with my wife on pillion in about 13 feet.
The Burgman 650 is not the easiest bike with which to do u-turn. The mechanics make it somewhat easier than a conventional motorcycle, no clutch to "feather", just keep the RPM's up and use the rear brake to control your speed. But, the physical configuration makes it a little more difficult, that is my humble opinion based on 44 years of riding all different types of motorcycles.
I would recommend everyone work on doing u-turns and slow speed riding. The most important thing to remember is to ALWAYS KEEP YOUR HEAD AND EYES TURNED IN THE DIRECTION YOU WANT THE BIKE TO GO!
It's just cool to be riding and pass something interesting along the road you want to pull into, and being able to just pull a u-turn (providing it can be done safely). It's even better when there's other riders already there.
Ride safely, but have fun!!!!
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