My Bmw 520d Tourer had done c 3000 miles as Westerly Motors demo vehicle when I bought it just over 4 years ago . It now has done 36000 miles and I am most disappoineted with it . The rear suspension has failed twice and two wheels crack or buckle requiring replacement - cost in excess of £ 2000. I live close to Sherborne and drive on local roads when i have to .I do not drive off road or on rough tracks and am careful about avoiding potholes . It clearly is designed only for smooth first class roads . I will never buy another BMW .