Which part of a motorcycle should be touching the curb when parked next to it?

When parking a motorcycle next to a curb, the rear wheel should be touching the curb. This is crucial for stability and safety. Positioning the rear wheel against the curb helps to prevent the motorcycle from rolling into the street, as it acts as a physical barrier. It also allows the motorcycle to be more securely supported by its side stand, ensuring that it remains upright and reduces the risk of tipping over.

Parking with the rear wheel against the curb is a common practice that aids in maintaining balance and makes the motorcycle less prone to accidental movement, especially on sloped surfaces. This method is also beneficial in keeping the area clear for pedestrians and traffic.

While the other options may seem reasonable, they do not provide the same level of stability or safety as having the rear wheel against the curb. For instance, if the front wheel were touching the curb, it could result in the bike tipping over, especially if it is parked on an incline. Similarly, having the handlebars or the side stand in contact with the curb would not provide the necessary support needed for the motorcycle to remain upright.