Whats causes vibration only on th freeway going 65-75 what can be wrong
on 2004 Ford Mustang

2004 ford mustang convertable 2 dr

2 answers 2 comments
Rear tire separation, IMO.
If tires have been checked and balanced, google "scuttle shake" sometimes called "cowl shake" related to rag top autos. (Possible!)
You are right I do have convertible but referring to the first answer what is tire seperation
Thanks for your help.
Internal tire plys are, well seperated. Tire out of round, worse at higher speed. We just offering a best guess, it's all we can do online! Now , if we could take it for a test drive, that's a different story! So that may be what you need to do is have a mechanic drive it.