what would cause a 1994 jeep grand cherokee to start shaking violently at 45 on 1994 Jeep Grand Cherokee

I was driving hit my brakes and it seemed as if had better brakes and then proceeded about a mile and got to 45 mph and a violent shaking then the vehicle statrted overheating with a rubber type smell

Asked by for the 1994 Jeep Grand Cherokee
possibly a brake caliper is sticking and causing overheat condition of pads. this can also be caused by a rubber brake hose that is calasping internally