Fetishes. I have to have my tire labels line up with the valve stems and, if the tire has a rotation arrow, I have to have it right. I also want the front and rear tire brands to match too.
On the other hand, I's not at all fussy about tire pressure anymore. Don't think I've topped up my tires for six weeks or so. I used to top them up before every single ride.
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My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.