Nope, no change. I'm a 1 master and all I have is two sets of 34's. Only time I see it being enforced this year is at the bigger UCI events in the elites.murphy1 said:sorry for sounding stupid here but the new rules on tire width will not change the current usa cycling rules related to masters races 1/2 will they? Ive always used 34s and now that the rule says 33 will it be adopted here or will it even matter and will i have to change out to 32s? thoughts.