I have a 97 Saturn SL. When I go 75 mph I noticed that the front wheels seem to vibrate a lot. Below 75 mph and the car is fine. I rotated the tires but did not re-balance them. Do I need to re-balance the tires or are the wheel bearing bad or is it something else.
Any help is appreciated.

Thanks! :)

Rebalance them.

You may want to have the alignment checked (4 wheel alignment) if balancing doesn't resolve the problem.

Thanks for the response. I will re-balance them and hope that solves the problem.

I had the exactly the same problem as yours. I had the tires rebalanced 2 times and still didn't solve anything. One mechanic said the tires are usually the problem. Bought new tires and viola, vibrations gone.