Originally Posted by prathmann

I recently wore out the large chainring on one of my bikes. With the gearing on that bike I tended to use the large ring almost exclusively except on very steep climbs, so almost all of my miles were using that ring. It first started giving me problems at 60,000 miles at which time I flipped it over to put the stress on the other side of the teeth. At a little over 90,000 miles it again started to cause problems and I replaced it.