I have a 93 civic DX coupe. I'm getting a weird vibration at 80 mph and ends at around 95 mph. it will either make the steering wheel vibrate very slightly, but very fast or makes my dash vibrate. It doesn't seem to affect the handling of my car at the speeds. The wheels are balanced and the alignment settings are within spec. Suspension is stock, brakes are stock, but I think my calipers have been sticking.
Any clues on what would be causing this problem? I plan on upgrading my front brakes to a 2000 civic si setup and coilovers pretty soon hopefully, I don't know if this will get rid of the problem, but I doubt it. I'm guessing that maybe it is the axles? But they had been replaced about two years ago. Anything I should look for?
Thanks

 

I was going to say check to make sure your wheels are balanced...but you may want to have a look at those calipers. Are there any noices to go along with these vibrations....?

 

No noises, just the vibration that either goes through the steering column, or the dash, vibrates mainly the gauge cluster and the part of the dash around it. The steering clumn and dash don't vibrate at the same time.
It only does it at that speed, not at that particular rpm, I can be in 4 or 5th gear and it will occur. I'm pretty positive it's not the wheels, unless I've gone through 4 rims that all are out of balance. It did this with a set of 15" si wheels, 14 inch steels and 18 inch "racing" wheels.
Anyhow any help would be appreciated because it has me stumped, and vibrations like that can be a little unnerving at 80-95mph.