Some early G80 M3 and G82 M4 manual transmission models exhibit driveshaft vibration. Attributed to driveshaft balance or center bearing alignment. BMW issued a technical service bulletin.
Symptoms
Vibration at highway speeds (60-80 mph), driveline shudder during acceleration
Fix / Remedy
Driveshaft rebalancing or replacement under warranty/TSB. Center support bearing alignment check.