About half a year ago I had it at the Clio (Bj. 2001): When driving backwards from the carport the left rear wheel is blocked. Causes were rusted pads from the brake jaw, which had stuck in the drum. Today the same thing with my Kangoo (Bj. 2002), however, the wheel dissolved again, the cause is still unexplained. What kind of scrap does Renault install on the rear axle? Can someone report similar things?