Took a little spin on the carpet...
I would have bet money that the “crunchy” sound was not the tire on the concrete floor, but it must be. Mystery solved!
I have 60 miles on it so far, so tire isn't "new" anymore. If I remember correctly, I came across another post about this a few weeks back, but can't find it now, but I will ride it on some carpet to see if the noise is still there. Thanks for the suggestion.
From day one, my new XR has been making a crunchy sound as the wheel rotates. Can't hear it outside on the asphalt as the road noise covers it up, but it's very clear when in my basement:
Otherwise, all else is good. I'm just looking for feedback on whether or not this is cause for concern while I'm still under warranty.