Why are (pretty much) all tires black?

Question

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?

In: Chemistry

Answer 1

I haven’t seen it mentioned, but carbon black also adds conductivity. Back in the 90’s a tire company made a high efficiency tire that cut back on carbon black for some reason, and it was revised after complaints of static shocks. Carbon black in tires isn’t that conductive, but it’s conductive enough to give static a path to the ground and reduce the strength of static shocks. Here’s an article that mentions it. https://www.latimes.com/archives/la-xpm-1994-07-29-ls-21275-story.html