Thinking about building your own sidecar, or just want to understand what's going on with these monsters? A few subtle differences make a huge change in the way the machine handles compared to a "normal" bike. The bike is leaned out a few degrees as a counter to the sidecar's mass. The front also toes in a few degrees more than the rear, to reduce wear on the rear tire. Most factory combos come pre-aligned, to reduce the headache.