Yamaha’s history isn’t all greatness—sometimes, it’s bold experiments gone terribly wrong. From the dangerously unreliable XZ 550 Vision, whose carburetor failures could leave riders stranded mid-intersection, to the GTS 1000's over-engineered suspension that alienated touring enthusiasts, it’s a parade of missteps you won’t believe. And don’t even get us started on the three-wheeled engineering quagmire that is the Niken! Dive into this list of Yamaha's seven worst and nine best motorcycles—it’s time to pull back the curtain.