Originally Posted by
cthenn
Until they are uncomfortable, or until they get a hole in them. Why throw something out if it still works for you, and isn't completely ratty looking).
the analogy of my running shoes is the reason. After running 140 miles a month for 3 months, they still look good. However, the foam and materials break down. Thus, most runners I know replace them after 200-400 miles. Can you still wear them? Of course. I prefer to stay injury free though. The little things add up in endurance sports. In riding, I use my newer shorts for longer rides. I would bet the pads, like shoes, wear out and break down far before they look bad.
For me, good shoes for running. Good bibs/shorts for riding.