Highway drone.

[Bludger]

Hi everyone, this is my first post in this section after picking up a Megane today. It is a 2004 2.o 6sp with 75000km. I was suprised to find the car was a little noisy and had a fine vibration at speed over 100kph. When swerving from left and right at 104kph the noise did not vary or go away but it did when the car bottomed in wallows. It has half worn Continental tyres. It didn't pull to either side and otherwise drove well.
what do you think?

[wanda]

Maybe its the shock absorbers