What's causing the poor ride in my Mercedes Viano?

A terrible ride quality is spoiling life with my otherwise excellent 2006 Mercedes Viano 2.2 Ambiente. It's running on 225/60/16 tyres on standard 16-inch alloys and I’ve had a mechanic check the suspension, but no faults were found. Any idea what could be wrong?

Asked on 6 October 2013 by MrJonathan

Answered by Honest John
As long as you haven't broken a spring then that's the best ride you are likely to be able to get in this vehicle. The wheel and tyre size is fine.
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