I am having what seems to be the same issue @ 60-65 mph that goes away at 70mph on my 01' I have the 650 coils and superflex rears. I'm at 24-1/2 center to fender on the front. I'm going lower it tomorrow and see if that helps
I noticed the worn end link sway bar bushings too. They most likely would not cause the vibrations alone, but it made me wonder what the sway bar bushings look like. Again, would not necessarily cause the vibrations but if these bushings are shot would probably magnify it.
I am having what seems to be the same issue @ 60-65 mph that goes away at 70mph on my 01' I have the 650 coils and superflex rears. I'm at 24-1/2 center to fender on the front. I'm going lower it tomorrow and see if that helps