Noise above 40 mph
Many different things can cause a drivetrain noise above 40MPH. The most common are wheel bearings (https://www.yourmechanic.com/article/symptoms-of-bad-or-failing-wheel-bearings), driveshaft (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-driveshaft), U-joints (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-universal-joint-u-joint), or the differential. If you'd like some assistance with these checks, feel free to contact a qualified technician who...