has anyone had this experience. i mounted two rear pilot sport cups from another set of my wheels today to replace two worn tires. the ones i installed have probably 1-2, three day events left on them. the sidewalls on the "newer" tires seemed "fatigued" or "flimsy" compared to the ones i took off the rims. seemed strange to me that the ones with less wear had a softer sidewall. any suggestion, any concerns.
thanks in advance.