Steering Wheel Vibrate problems of the 2009 Ford Focus

It first started when I was driving down the highway and I started to feel my steering wheel shake. Nothing major, I just thought it was out of alignment. Days later, I had my front windows rolled down when I was pulling out of my drive way and I could hear my front and rear suspension creaking really bad. And now even when the cars turned off and not moving at all its still making a high pitched screeching noise coming from the suspension noise. . . No clue how that's even possible. I know its not coming from the engine cause the cars turned completely off, and I've tested it out with the hood open to see if I could possibly hear it better but im still hearing it from the front and rear suspension area. I've googled "Ford Focus suspension problems" and tons of other people have had similar problems with their suspension from Focuses from 2000-2011. I did more reading and peoples camber will start to change to the point where they're buying new tires every year. . . Im just saying I don't want a front suspension part to break apart down the highway when im driving 70 and have me crash into a ditch or a truck or something like that. Definitely something to check out.

My 2009 Ford Focus has had obvious suspension issues since 6000 miles. Rear tires always slip in wet conditions from a stopped position during a normal initial acceleration. Furthermore at speeds greater than (>) 60 mph the steering wheel vibrates and the car shakes. I am a fairly good driver and in countless "normal" driving conditions my car has gotten into an "out of control state" luckily I was able to recover. I had taken the car to a Ford dealership to be told the tires were causing the problem. I replaced tires, had an alignment performed and again in short order (less than 6000 miles driven) the issues came up again. This is an extremely dangerous safety issue. First of all the need to accelerate without your back tires and rear of vehicle sliding/shifting side to side is essential. Furthermore, a car should not vibrate and rattle violently at speeds of only 55 mph. I fear that if I continue driving this car in it's current state, I run the risk of getting into an accident.