I drove my car today

[RandomTroll]

@shadowfax

If your tires look anything like that

They don’t.

@wentwest

If your tires are as cracked up as the ones in the photo that was posted recently

They aren’t. That wasn’t a photo of my tires.

@Mustangman

If you really want an objective measurement then take a durometer tester and determine the Shore A hardness of the rubber. 80 at room temperature (70F) should be your limit.

I bought one. My tires test just above 80.