Shuddering when turning

[RobMac14]

Hi, I've a 2009 D5 Active Auto. Had it from new and love it. Recently the rear tyres have started to shudder when turning either left or right at low speed. I've also had to replace the rear tyres as they wore out on the outside. Tracking was checked and was fine.

Anyone any other ideas what this could be? Has my local garage stumped.

Thanks in advance.

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