system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are (pretty much) all tires black?

I only know of some bike tires that are blue. But why isn't it more common to find tires in different colors other than black?
gpt
The rubber that tires are sourced from is a milky white color, but carbon black is added to the rubber as a stabilizing chemical compound and makes the tire black. ... Carbon black protects the tire from the damaging effects of UV light and ozone, two known elements that contribute to the deterioration of the tire.