Wheel assembly for vehicle having drive plates in which forces exceeding a level are not transferred to the axle

A vehicle comprising:

• (i) a chassis;
• (ii) a cab for accommodating at least one occupant;
• (iii) at least one wheel assembly comprising:
• a wheel rim adapted to support a tire;
• a first support plate mounted to said rim;
• a second support plate for mounting to an axle;
• at least one first coupling device, connected between said first and second support plates, for transferring torque between said first and second support plates and, when said first coupling device is engaged with said first and second support plates, prevention of radial displacement of the first support plate relative to the second support plate is independent of said at least one first coupling device;
• and
• at least one second coupling device, connected between said first and second support plates, for securing said first and second support plates together, said second coupling device preventing radial displacement of said first support plate relative to said second support plate;
• wherein when radial forces exceed a predetermined level the or each said second coupling device is incapable of transferring said radial forces from said first support plate to said second support plate and the or each second coupling device enables removal of the wheel rim and said first support plate from said second support plate;
• and
• (iv) a respective axle provided on the chassis for supporting the or each said wheel assembly.