disclosed herein is a wheel cap comprising a wheel cap body provided with engagement portions to be engaged with a wheel disc , and a linear elastic member mounted to the wheel cap body and adapted to bias the engagement portions in such a direction as to press - contact the engagement portions with the wheel disc , wherein the linear elastic member is in the form of an endless circle having a plurality of loop - like flexible portions along a circumference thereof . with this arrangement , installation of the wheel cap body to the wheel disc may be improved , and a mount space of the flexible portions may be effectively utilized .