I put a set of these on about 7k ago. I think they're starting to get a little noisier. Is this expected or should I be looking for some wear issues? I hope it's not something else (e.g. differential, etc.). Sure sounds like tire noise. Anyone else experiencing this?

 

I just put 6k on mine, had them rotated and rebalanced. I think they're great. No noises on mine.