I ran out of these rim protectors and it was going to be a week to get more.  I modeled a new one as best as I could from the damaged part.  I was able to do a dozen tires with one made of PLA, then someone else used the machine and broke it first use.  Currently trying one in PETG.

Hunter wants $10 each, this is about $0.12 of plastic printed with 100% infill.