joeyd
Platinum Member
You should replace them any time you've taken a serious enough hit to pull some fibers.
Also, oil is the enemy of many of these protective fibers. When the chaps have become oil soaked over time, you are not getting the protection you did when they were newer.
For these reasons I just ordered a new pair yesterday. I also got them 2 inches longer, my old ones stopped well above the top of my foot.