1. Both tragedies were caused by wheels coming off cars during a crash and flying into the stands. 2. A. Steering wheel shimmy or shake is usually caused by wheels being out of balance. 3. It was unclear whether a broken wheel caused the track damage or vice-versa. 4. The cause is believed to be a wheel bearing that caused an axle to drag and catch on the train switch. 5. Authorities believe a broken wheel caused the wreck in the northern village of Eschede, although they have yet to determine what caused it to break. 6. German authorities believe a broken wheel caused the accident. |