Have you ridden a motorbike with a sidecar before? If you haven’t, it’s a completely different experience from two-wheeled motorcycle riding. It’s related, of course—but it’s different enough that you will have a few things to reconsider, going between a two-wheeled machine and your sidecar rig of choice.
That’s even more true if you, like Bike World’s Chris Northover, accidentally buy a busted-up and ancient sidecar whilst drinking with a buddy one night, and then later decide you want to bolt it onto a random bike you have sitting in your garage. Say, a Royal Enfield Meteor 350.