A tank slapper is when the handlebars wildly oscillate. They are also called speed wobbles or death wobbles and, as the latter name implies, they can be lethal. They are usually developed at high ...

Some call it “shimmy,” sportbike riders call it “tank slapper” and in the 1970s bikers in England called it “weave.” Harley riders call it the “Death Wobble.” The “Death Wobble” is a phenomenon where ...