why does my 99 camry shake so badly when I travel more than 50 mph?

Good Morning and thank you for submitting a question. We are Advanced Automotive in Redding, Ca. A vehicle that shakes at any give speeds can have any number of things not going right, the first place is tire wheel condition, make sure that the tires are not out of round or do not have any signs of ply seperation, it could as simple as a tire balance issue, that is a good place to start. Other items could be drive axle related. Thanks again, Tim

Maybe out of round tires trying to separate on you, just a guess without driving it.