Re: Vibration between 70-80 mph
Now I've noticed this same vibration with my new Conti's.
Like others, It's like a wave going through the car and cycles on/off every second or so. Very subtle but I really feel it on smooth hwy surfaces above 50=60 mph but under 130.
Discount has aligned them twice but it's going back for another.
Be aware of this potential issue when purchasing Conti's.