On certain vehicles (GVW 25t), a crack may occur on the flange of the front hub after driven a lot on a curvy road, due to the lack of durability of the hubs. Also, a crack may occur sooner, depending on other conditions, such as vehicle maintenance and loading. If left unfixed, the crack can grow. At worst, the cracked part gets ruptured, causing the wheel to fall off. This recall is to include more vehicles in the past recall (case number RJ-1056-0, issued on 24 March 2004), after the further strength tests.