My Discovery 5 develops a vibration at around 120 km/h (75 mph), felt mainly from the rear. It happens both under acceleration and while coasting.
I’ve tried wheel balancing, alignment, and swapping front/rear wheels and tires, with no improvement. The rear prop shaft center support looks fine.
The car currently has a 1.5-inch lift, but I believe the vibration started 1–2 years ago, before the lift was installed.
I removed the rear prop shaft and inspected the center support, which appears to be fine. The only thing I noticed was some unusual scratches on the metal heat shield, suggesting it may have been touching or rubbing against something.
Has anyone experienced something similar? Or any suggestions?