back in the early 70's we ran mccreary slicks on everything as the mccreary dealer was only 1/4 mi. away from my home. [yes, there was "stripes from the shop to home, and from home to the shop.] i still have a set or two of 11.00x15,s we use for rollers. they aren't cracked and have plenty of "hole" left ! might be kinda hard now though.......