Originally posted by G-Benz
My first guess (considering the mileage) would be loose or worn suspension components. The added load on the rear puts added stress to those components, and things start to get loose when driving at high speeds.
I'm not an expert at what to look for, but check the rear crossmembers bushings for signs of wear.
I HAVE CHECK FOR THIS THINGS BUT WHAT I CAN SEE EVERYTHING SEEMS TO BE OK
I THINKING MORE THAT THE ACKUMOLATERS TANK FOR THE REAR SUSPENSIONS IS NO GOOD
CAN THAT BE DOING THIS THING ?