With your suspension all the way up drive slow over a speed bump.
Do you get a thunk sound as the suspension compresses or comes off the speed bump? If so you have this... control arm bushings (short and long) it also can cause a shake in the steering wheel at 100kph to 110kph in my case. Also will need to do tie rods/ball joints.
I say this solely assuming you don't know how it was previously driven and maintained.
I'm getting close to 250k km on my 2005 4.8iS on shit roads with the occasional open manhole...
Sent from my SM-A730F using Tapatalk