In this study, effect of counterface roughness on dry sliding wear of polyoximethylene (POM) and polypropylene (PP) against stainless steel discs (HRC 52) is investigated. A pad on disc tribotester was used. Cylindrical surfaces of discs were used as wearing surfaces. Polymer specimens were produced as cylindrical pins. One of end faces of each pin was formed in the same radius of the discs.