I remember retreads being a thing you could buy for your car in the 1970s/80s. I remember local radio ads from retread shops. I haven't heard of passenger car r

I remember retreads being a thing you could buy for your car in the 1970s/80s. I remember local radio ads from retread shops. I haven't heard of passenger car retreads in decades though, so I don't think it's really done anymore.