by Bean-Boy
Also, try and use a light touch when apply the primer (outdoor only and not when it's humid). As with paint, too thick a layer will mask details and spraying too closely can cause pooling. Don't feel bad practicing on anything else you have sitting around that you don't care about.Also, while waiting for the primer you could clean the wheel. Soak in warm soapy water for 10-15 minutes then scrub lightly with an old, soft toothbrush. There are often residual oils left over from manufacturing that we can't see or feel that well but that can impact the adhesion of the primer.