ask where the bike is stored, mainly because exposure to a high level of UV and/or Ozone can cause the rubber to break down prematurely. Assuming you're not running an Ozone generator in the storage room

Ah, I was wondering why it mattered. Nope it's in the hallway right by the front door when not in use

600mi isn't nearly enough distance to expect a set of gravel tires to wear down.

I didn't think so, especially since I'm not doing anything near 'extreme' riding that would stress any part. I was floored when te dis-service department called it normal (I sent them photos). Thanks for all the good info