...So others should heed your warning: if you have a final drive failure, it is best to stop and trailer right away rather than limp "a few more miles". Those last few miles can increase the number of parts needing replacement even to the point where it is not cost effective to repair the drive and replacement is the only good option....
Charlie, I understand what you're saying, but from my personal experience, I would beg to differ with you re: your reasoning. Yes, a person who tries to limp on in to the next stop or wherever is taking a chance of damaging additional parts. In effect, you're saying the repair costs will be higher. When my FD crapped out, I was also riding two up, loaded panniers/top case, and pulling a trailer, and I was in unfamiliar parts of the country. I could have wasted a lot of time, locating a tow truck/flatbed to come retrieve us off the interstate, then wasting more time figuring out where to take the bike, etc. etc.
In the end, I probably would have spent just as much money in a tow bill, along with the additional loss in monies spent on hotel reservations already booked, as I would have in additional parts replacement because I chose to limp in. My thought process is at least I got the bike, and more importantly, my wife, off the side of the interstate. The piece of mind that comes with the idea we've encountered a break down, but we're still making progress because we're still moving forward, and we're not stranded on side of a road, worrying about being hit by some other vehicle- that is worth whatever increase in costs I might suffer from as a result of limping it to the next exit.
My circumstances was such that I was carrying a spare FD, and I did have to travel on the blown out one maybe a mile or two, and there just so happened to be a motorcycle dealership at that exit, so it could have been a lot worse. The fact that it could have been a lot worse, i.e. more costly in time and money/mental anguish is my point. In such instances, my suggestion is, if one can, then ride on.
Ron, your "guru" might be correct for suggesting that range of kilometers for an '02, but there have been plenty of these FD failures occurring a lot sooner. In my case for my '99, it happened at approximately 61K km, which is significantly lower than your mentioned mileage. Readers/new owners shouldn't get hung up with the expected mileage, but rather realize if it's a BMW, and specifically an LT, then it's bound to happen, eventually.