What causes Feathering in motorcycle tires?

I have a Honda PCX 125 that the rear tire I have noticed has been starting to feather. I checked my tire pressure, it's at 40 PSI, which is where it's supposed to be. I don't feel any shimmies or hear anything out of the ordinary. I did take my bike to the dealer where I got it from and they said it could be my rear suspension. Could this be a factor in my tire wearing bad?

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