Shakin star

Golf ball, no, beads, yes

 

If they start going bad do to alignment or balance issues, they're pretty much done, and are never going to run smooth.

Is the shaking at highway speed, or in the mid 30 mph area?

25 years old, I'd be looking at the bolts on the shackles, the springs, and the shackles and the springs themselves. The bolts on the rear springs typically get replaced when you do motor mounts when the clutch is done ( 800Kish ).

Once those tires get even a little out of round they just get worse.

 

Does it smooth out once you get up to speed?

 

A dealer is usually a good place for a good alignment.

I hate going to a dealer probably worse than anyone. But they do typically do a good job with steering.