As someone here earlier stated, the Casler cheater drag re-caps worked excellent. As for my experiences w/the Bucrons, if I remember correctly, they worked best at the track on my '57 when about 1/2 worn.....that point is also when they became quite scary, if you had to drive them on a wet road.....however, new, w/full depth tread, they were respectable in the rain....just 2 straight tread lines w/hundreds of little "z" cuts in between made them quite unique-looking for that era....
WJ