I have a 2017 Prius 3 touring. I have noticed that the plastic parts of my rims have been peeling/discoloring and I don’t really see any reason why they would be doing so. Not all 4 wheels have shown this, it’s more on about 2/4 of the wheels. I was wondering if this was a common issue that anyone else has had experience with. I don’t have any pets that urinate on my car and really have no other explanation as to what could’ve started this peeling to happen. I have attached a picture to give you an idea of what I am referring to.