Five year old article on the "15 inch tire problem"

Back in the late '80s Goodyear and Goodrich would ship some of their street tires that they had shaved to 1/2 tread depth at no extra charge. This improved road course and autoX performance. I wonder if we could buy our rock hard BFGs or Coopers pre-shaved it would improve their performance? If anyone knows where I can buy shaved tires, please share it. With as few miles as most of us put on our cars I don't think the loss of some tread would be an issue.
And I'd totally try some non-radials, I've used bias racing tires and like them a lot.