Yes indeed, JD. I remember that up into the sixties. Often if a retreader rejected a tyre as unfit for retreading, the owner would put it back on and "wear it out". A few even wore them right through "the canvas" and put a sleeve inside to get a few more miles. Home (and professional) regrooving was all the go too at that period of time. you could buy an attachment for a Birko soldering iron for regrooving.

