Originally Posted by
Tomm Willians
I run GP5000’s on a couple of my bikes with one bike seeing much more use than the other. The tires on the more used bike have developed a noticeable flattened section on the crown which of course is most obvious when compared to the other set.
At what point do you guys/gals determine that it’s time to replace?
I replace a tire when cords show, it gets cut, or it bulges due to broken cords.
Before switching to tires with a flat protection layer I also changed when the flat rate became unacceptable.
I always put the new tire on the front, usually moving the lightly worn front to the rear.
Contental GP4000 or GP4000SII ready for replacement: