If you car shakes only at around 55 to 70 m.p.h. more than likely you have a tire balance problem, or a tire problem of some kind. You may have a tire beginning to separate which can lead to a tire failure. A shake at any speed needs to be addressed but high-speed shakes can be a real safety concern. If you have a drive line shake it will be felt at much lower speeds and again at higher speeds.
#tire #failure #shake