Originally Posted by
HillRider
There is no one number for your question. How heavy are you? Do you ride in bad weather routinely? What type of riding do you do, road, gravel, etc.? I have over 20,000 miles on each of two BB-6700 bottom brackets (the 10-speed predecessor to the 6800) and they are still in fine condition.
This is the answer. There is no definitive number of miles or kilometres that any bottom bracket will last