Help! Strange Vibrations

[TheBigDirty]

My car feel's fine when I'm driving, until I reach about 55 mph. Then the whole car starts violently shaking and the steering wheel starts vibrating like mad. It keeps shaking until I either reach about 63 mph, or I drop back under 55. It does this in all gears, EVERYTIME I pass through 55-63 mph.:bash: It just started doing this all of a sudden, I didn't mess with anything on the car around the time this started. I searched but I could not find anything. Anyone got any ideas?

[downshift_sideways]

We'll since it my old car...I know what the problem is lol..

Do you have the same tire size all around?

and if you haven't got an alignment yet...get it done ;)

[TheBigDirty]

I do have the same tires all around now, but I haven't done an alignment. I figured that was probably it, I am gonna try that first. Thanks!

[downshift_sideways]

Started doing that to me, when I hit a pothole in the mountain.

Never took care of it :-/ Alignment FTW!