Steering wheel shake/vibration at freeway speed
I was hoping that Civic experts here might be able to provide me with some helpful advice. I have a 1997 Civic DX with ~100k miles. When traveling at freeway speeds (65-75 mph), I recently noticed that the steering wheel shakes or vibrates. This is not associated with braking or with any recent incident with a large pothole. Also, replacing the two front tires with new ones and balancing all four wheels has not solved the problem. I also tested whether the tie rods might be loose but they were not. Last year, I replaced both front drive axles. Based on this information, someone at O'Reilly speculated that my problem might be due to loose motor mounts or a bad front wheel bearing. However, my front wheels don't show any obvious play and seem to turn freely.
Does anyone have a helpful suggestion?
Thanks in advance,
RonJ