Rear springs and bushes

[David Knight]

Hi to all just had 2 new rear springs and bushes fitted on my 07 e class saloon, don't know what they've done but the car handles like, feels really light on the back end, it also has had the steering adjusted. When I was driving along the motorway crossing back into inside lane the car wobbled all over the place, it's never done that before, and I drive that road every day. Has anyone got any ideas before I speak to the garage on Monday. Thanks David