Really, pothole should not be reported at all unless it's more like a sinkhole and your entire car will be swallowed up
I guess it depends on where you are. I am not sure what the CA baseline of a pothole is, but I can speak to and compare two areas:
1.) NYC region - Here your definition of sink hole applies. Potholes that bend rims and mess up alignment are a way of life, especially around the winter. If there is a road with no potholes, it was just paved in the past 10 days or less.
2.) East TN - Here the DOT does an amazing
job at paving roads. They have these trucks with lasers on them to measure the road surface and they grind down the road surface so it is smooth -- even at transitions between concrete and asphalt at overpasses and bridges. (The last few years have been tough with harsh winters and low budgets, so roads aren't to that level in some places any more.) Anyway, I've actually seen a pothole make the evening news on more than one occasion and it wasn't even big. People just aren't used to them here.
Personally, I think a pothole should only be reported in one of these cases:
1.) It will swallow your car or cause damage to an average car (not a compact car lowered to a finger-width from the road riding on low profile tires).
2.) It is located in such a way that people are swerving out of their lanes to avoid it.
3.) And maybe if the pothole is throwing up debris when people hit it.
Of course expecting all users to think that hard about a pothole is a pipe dream