try and buy rims?

you can use a discrete wire, a screw, or some other thing you'll be swearing at next time you have to take them off.

painting them and waxing them with appropriate waxes etc.. they are usually single stage, and plastic bonded, sanding them lightly, etch primer, resand, and paint with a top cat of uv proof clear will make them look new, so you could even just refinish your current ones if you fine a 4th.