It's there in the manual cars too. I've had my car in the shop twice in the last week and a half for a vibration that came on at 60mph. Up until 60, everything was absolutely perfect. Then from 60 to 80 (where I spend 75% of my driving time), I had a rough vibration. I don't even think the techs drove my car the first time. They did what they call a "force load balance" on my wheels/tires and said it was fixed. I drove home and thought to myself, "they didn't drive the car or they would have caught this". I took it back and the service manager tried to tell me this was a normal characteristic of mustangs. I'm like "That's funny. This is my 5th mustang and I've never felt this before". I drove another Brembo car just like mine to make sure it wasn't normal (which I already knew) and even offered to go on a test drive with them to prove my point. They took the car back and ended up replacing the driveshaft the 2nd time around. I got it back yesterday and the car feels pretty good, but I'm not completely sure the vibration is 100% gone.
