Sometime within 2 weeks time of washing my wheels my caps disappeared. Given how easily they disappeared and the fact that I've had them since March, I'm guessing it's happened before. And if it happened to someone here maybe they had to buy a new set and now have 3 extras from that set. If so maybe they'd like a few bucks for one. If not, maybe somebody knows where to find these. If I search I usually get wheels but not the caps. I have a picture with the missing one on the left, and the one on the right is the good one.