The size of the dent that can be repaired using paintless dent repair (PDR) techniques depends on several factors, including the location of the dent, the type of metal on the vehicle, and the skill level of the technician. In general, PDR is most effective for dents that are smaller than a baseball and are located on a flat or slightly curved panel.
However, even larger dents can sometimes be repaired using PDR techniques, depending on the specific circumstances. For example, if the dent is located on a flat panel and the metal has not been stretched or creased, it may be possible to repair it using PDR. Similarly, if the dent is located on a panel that is easily accessible from behind, it may also be repairable using PDR.
If the dent is too large, too deep, or is located on a panel that is not easily accessible, traditional bodywork techniques may be needed to repair it.