Old 03-28-21, 06:05 PM
  #20  
Drew Eckhardt 
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Location: Mountain View, CA USA and Golden, CO USA
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Bikes: 97 Litespeed, 50-39-30x13-26 10 cogs, Campagnolo Ultrashift, retroreflective rims on SON28/PowerTap hubs

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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:


Last edited by Drew Eckhardt; 03-28-21 at 06:10 PM.
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