My Touran has started making a lot of tyre noise from the offside rear. Noise is loudest between 40/70mph. I've had the wheels re-aligned and tracking adjusted but my tyre fitter says the problem is with the suspension. I've had the 2006 car since new and have only carried 7 passengers twice, for less than 10 miles. Is supension damage likely? The main dealer wanted £200 to align the wheels so I'm frightened of asking what replacing suspension bits is going to cost!