Description Reviews MINI Wheel Chock! So you bought the car used and the last owner left all of these items in the garage; or maybe your car didn't come with one. This is a folding steel chock that you can wedge under an inflated tire when jacking the car up to make sure the car will not roll forward or back, depending on where your flat is, and the terrain where the car is parked. Works for all years and models! This is a MINI OEM part that folds flat for easy storage in any of the kits that we sell (foam trays).