A spare tire carrier is the part of a car that is designed specifically to carry or house a spare wheel. For most SUVs, this is an external structure to which the wheel is fastened. For sedans, the carrier is usually a space in the boot of the car.

Depending on the shape and material, maintaining this part entails regular checks to ensure that the part is properly fixed to the car's body. For metal structures, this may involve rust control, while plastic breakages may neccesitate a replacement of the entire structure.