I had a BMW R1100S, and did this. The barrings still went out at 40k... I will say though, I bought the motorcycle from a good friend of my fathers when it had 24.5k. All the maintenace at that point was done at the local dealer (I will not say dealer name). Took the bike to a friend, found out the air/fuel mixture screw was almost completely unscrewed and the final drive fluid looked like it was never changed. So I'm sure that had a hand in the failure. My dads R1150RT final drive barrings went out at around 63k too... :-/ Engle Motors (Kansas City BMW Dealer) changed the final drive fluid with every tire change. If I remember correctly, Engle Motors "area" had the least final drive failers of all the United States. BMW does have a problem with their final drives, but will not admit it. It's always the riders fault... :huh I love BMW, and am looking for a R1100GS, but I'm still worried about the final drive. Also, why the hell should I have to take apart the whole bike ever 40k to lube the splines. Ohh well... I like the looks of that Yamaha, but don't have the money.