Why is my car shaking at 60mph or when i hit a bump?

I would have said you had a bad tie rod end or bad A-frame bushings or maybe a bad pitman arm but these items should have been found when you had the front end alignment.

I would go to another garage and have them check the front end again and see if there is any wear in the things I noted above.

I had the same problem on a 1973 chevy pickup and it turned out to be the pitman arm. I could drive down the road just fine until I hit a bump and the front end felt like it was going to fall apart it shook so bad. The only way to stop it was to slow down to almost a crawl.

I took this truck to several garages until I found one that found the problem. The pitman arm would move on the steering box and the nut was tight. After replacing the pitman arm the problem was gone.

Hope this gives you a place to start and you find the problem.

The tire wear is usually due to a bad alignment which should be fine now since you have had it aligned.

Good luck.

Well the popping sound usually comes from the CV joints when they are worn out they start popping or clicking, but the shaking sounds more like the engine mounts you may want to have them checked out if they are worn out then your engine could fall out if you hit a speed bump too fast.

Could be a lot of things, but I would get it checked out SOON you don't want to break a ball joint while you are going 60

Junk it ! Is old Dont buy americans cars they suck! Buy jappannesse they last longer and better !