Emergency wheel

A clamping device for tensioning an attachment on a rim of a vehicle wheel, wherein the attachment is configured to enable a driving operation with a restricted tire function in an operating state in which the attachment is fastened on the vehicle wheel, the clamping device comprising:

• a rear grip section configured for positive engagement behind a rim flange of the rim of the vehicle wheel,
• the rear grip section is pivotable about an axis, which runs tangentially to the circumferential direction, relative to at least a part of a remainder of the clamping device and is positionable in at least a first position and a second position pivoted about the axis to the first position,
• the rear grip section is configured as a hook protruding in an axial direction and running radially inwards in a section through a section plane running in a radial and axial direction in the first position,
• the rear grip section has a retaining section configured to take up clamping forces, and an insertion section configured to enable insertion of the rear grip section between the rim flange and a tire side wall adjacent to the rim flange, wherein the insertion section is arranged axially inside relative to the retaining section, and
• the insertion section has a surface facing the rim flange that runs, viewed in the section plane running in a radial and axial direction, at a flatter angle relative to the axial direction than a surface of the retaining section facing the rim flange.