Hi Guys, need your help on this.

I have a problem with my B310 during cruising at speeds beyond 60kph ++
The rear end of the car seems to be unstable and it swerves left and right for no reason. Even on a straight road, i can feel the back end is not synchronized with the front.

I changed the axle bushes (all 8 of them), changed the tires, checked on wheel alignment and also checked on the suspension, but problem still persists.

The car handles well most of the time during fast cornering (100kph++)..but when it comes to a straight & unlevelled road, the car just behaves abnormally.

Please help me to troubleshoot...advance thanks for your advice.