Hi, Another problem i have is when i go round a roundabout im getting a knock from the back driver side, sound like the wheel? It just knocks once and it sound a bit like something heavy, almost like if you can imagine sliding a weight on to a weight lifting bar and the noise it would make when it knocks on to the next weight??? Hope this makes sense? It been doing it since i had a service about 2 months ago but its not getting any worse? Hope someone can help?? Thanks