Originally Posted by lemieuxmc
Judging from from your Avatar I think that you may relate to my point of view.
Dallara and many others who have some experience with parts failures have commented on the FD issue for various reasons, but the big issues are really;
1. BMW made their name by making the best motorcycles you could buy and cost was secondary.
2. BMW either knows how to make a proper final drive or they don't; if they know how, but have a high failure rate, they are ripping you off by knowingly selling you an inferior product... if they don't know how to make a proper FD, they are ripping you off by selling you an inferior product. It's a "No Win" situation. The idea that BMW has to shave a pound or two by less strength in the FD on a bike as massive as a GS is ridiculous.
3. Whether it's covered by warranty has nothing to do with it... Snap On tools have a premium price and a lifetime warranty, yet I have NEVER seen anyone break a Snap On hand tool! Chrysler started offering a long warranty to counteract the (accurate?) perception that it's cars were crap. In reality, long warranty coverage isn't that big of a cost if it only applies to the original owner or if (statistically speaking) a failure is quite rare. Hyundai/Kia have an excellent warranty and are very low priced vehicles, it's a great sales tool.
SnapOn tools break all the time, I have two shops and two real big roll arounds full of them, they do however have an iron clad warranty. 3/8 drive metric and SAE allens are the worst. But they are used almost every day. Socket failures are real uncommon, but they do happen especially on ball drive impact flex sockets. Wrenches are bullet proof. More than one screw driver has been snapped using a wrench on the hex PROVIDED just for that.Ratchets are the best in the business.
The point is almost everything breaks.
As to how that relates to BMW final drives, well everything breaks. As to BMW ripping people off, thats an asumption best descibed by the first three letters of the word. Very few manufacturers deliberately build a product to fail. German engineers expertise, attention to detail, and arrogance are legendary. A lot of time was put into making the 12 as light as possible. And as to "a few extra pounds" not really making a difference, well I guess you don't understand the concept of unsprung weight. I have personally repaired two BMW finals for folks traveling through Yellowstone, both had over a hundred thousand miles on them and were on K LTs. the design appears fine, but requires spot on measurements of the castings to determine the proper shim sizes for pre load, and it still is a guess without use of blue, and dissasembly of the final.. Truck and auto manufactureers do the same thing but weight and size is so grossly oversized as to not matter. My guess is that engineering assured someone that the design was good, and pride and arrogance took a few years to wear thin enough to admit a mistake, at least within the corporation. And for a German engineer to change a design must be tough, I have heard enough of the "this cannot be" shit from Mercedes Benz Industrial.
After owning a Wee and a F650GS it was with some trepidation I bought a 12GS, and used at that. I like Airheads, the simplicity, the overall design of the bike, easy to live with compared to a overhead cam four from Japan. All that withstanding, the 12 is a fabulous MC, light for it's size, easy to work on, and fun to ride. It crushes a airhead in the power and brakes department. And it is still light enough for a almost 62 year old 158 LB. guy to pick up. That is a pretty important consideration for me, as I generally ride alone, and SW Montana and BFN Idaho can be pretty lonely compared to a lot of other places. So for me the lighter than it should be, slightly fragile final is worth the trade offs. Probably wasn't worth the time to post, but the "experts" who don't even own one alluding to purported shoddy design work probably have never designed or built anything themselves. It's hard to be perfect, just look at Honda and Toyota automobiles the last five years, more recalls by percentage than Ford or GM, who would a thunk that? Or better yet try and build a race car or bike sometime, betcha something breaks no matter how much time and thought you desk chair geniuses put into it. Till then go for a ride,you lucky SOB's, I'm waitng for the snow up here to melt. And I look forward to the glacial pace of a Gov't investigation, when we will ALL find out the truth. But then some folks will wail that "oh nooooo, it was really way worse than that" it must be a coverup. Gee, wish I could hate Harley, or Yamaha, or somebody, but then SnapOn tools never break.