If AI could build tires then the quick lube could just come to your place of work and assemble the tires right on your car from raw materials, amiright?

Look, my last set of tires cost $1000 (and that was before COVID). They might last 50K miles. How much do you drive? There is no way that new tires plus replacement is going to be $7.50/tire. Even a unicycle isn't going to have a $30 tire.

I have seen tires for small cars in the $40 range. We have already said cheap and won't last long so $10 per tire may be possible.