I wasnt advocating for them to coexist, but to replace. When we tested the burris tires we were testing compounds for wear, as we knew YHC's were costly. They were tested back to back, and im not sure we cared about times. (Not multiple heat cycles) . I realize the Ducuzzi's only come in 7.10's, but is it a bad thing to standerize size up the ladder? Also remember we raced on B-44's which have a duro. of 54 to 56. Dont know about anyone else but to save $35 a set times 3, can almost get a forth set free. Also i believe they are a better tire for what we are doing.( cost effective) my guess is these may last the entire season and stay competitive i would like to see a vote among drivers which one to choose, we don't owe burris anything do we? we certainly arnt getting a smokin deal. another thing i ran these tires in 10 practices and then will ran them in a yam pipe race(20 lap feature. i truly believe they are superior tires