Rear Drive Failure

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mogu83
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Rear Drive Failure

Post by mogu83 »

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These pictures keep showing up on a Guzzi list followed by stories of how Beemer rear drives are blowing up all over the country. If you look closely you'll notice that neither picture actually shows a rear drive failure but that doesn't stop the legend of the exploding rear drive.

The only person I know that actually had one of these drives grenade under him was Rob N-- from New England, BUT he was also the same guy that ran his GS full bore into a cement sh--house after blowing through two porta-potties folding the front end almost back to the engine (I guess that could be considered a front end failure). So he's not exactly a person that babies his machine.

How many people on this list have actually a rear drive blow up/go on fire or have some other catastrophic failure. Let's not count seal failures or second hand stories about other peoples failures.
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Re: Rear Drive Failure

Post by Caroanbill »

Harry

That's an Australian picture (our dry schlerophyll forest is quite distinctive). In fact I'd hazard a guess it's on east coast forest roads and if I'm right, some very rough roads near Yuragir National Park in NSW, judging by the trees and grasses. I nearly broke a diesel Jeep on those same roads.

I know some rough-road GS riders who load up their machine like this one, and quite a few through my old club. Yes, I've heard of spline failures on GS1150 Adventures - but even then BMW came to the party out of warranty. A much, much heavier machine that the 1200GS Adv, and with an underslung paralever. I've never personally heard of GS1200 drive failures, and certainly none via the web on machines post 2006.

Like you, I'm inclined to call BS on the exploding-drive stories. It seems to be one aggrieved individual. If this pic is the "exploded" drive, then anyone who rides hard enough on rough Aussie roads (and loaded up - look at the size of the pannier) to shatter the alloy like this should explain (him)self or be disbelieved. Or maybe this guy isn't the complainant and our whinger has mis-appriopriated his pic. What to the guys on Advrider say???

If the alloy could be shattered by simple offroading, Joe Finn would have done it long ago!!!

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Re: Rear Drive Failure

Post by Bob Ain't Stoppin' »

[quote=The only person I know that actually had one of these drives grenade under him was Rob N-- from New England, BUT he was also the same guy that ran his GS full bore into a cement sh--house after blowing through two porta-potties folding the front end almost back to the engine (I guess that could be considered a front end failure). So he's not exactly a person that babies his machine..[/quote]

Just in the interest of fairness, Rob's rear drive failure that you reference was on an iron butt rally . . . so obviously an extreme situation. Your port potty incident description is inaccurate. Rob doesn't baby his machines, but he does take proper care of them, and he also will admit his mistakes.
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Re: Rear Drive Failure

Post by deilenberger »

I'll add - more interesting info - how many HAVEN'T had a rear drive failure - and your current mileage:

Mine is fine at 51,600 miles.
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Re: Rear Drive Failure

Post by Caroanbill »

Also trouble free.

50,000km, almost all of it in long riding days (700km+) on sealed but quite rough Aussie back roads, fully laden and at speed.

Mine has had a full service history, but it has worked hard, and has had no failure or even hint of an issue with the final drive.
(Sealed final drive on my 2007 bike, but has had regular oil changes as per revised service advice)
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Re: Rear Drive Failure

Post by Lost Rider »

mogu83 wrote: These pictures keep showing up on a Guzzi list followed by stories of how Beemer rear drives are blowing up all over the country. If you look closely you'll notice that neither picture actually shows a rear drive failure but that doesn't stop the legend of the exploding rear drive.

It's unoriginal, regurgitated, cross-posts with misleading titles like this that perpetuate the BMW final drive failure conspiracy legend.


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Re: Rear Drive Failure

Post by mogu83 »

Bob - As far as Rob (I didn't use last name) admitting to his mistakes, when you see him, ask him about the kind of mistake he made running the Scottish Trails at the Heath Rally two years ago. I was there and he immediately asked for no pictures to be taken. Ask him.
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BTW: The Sh--house is still standing but the one Porta-Potty was dented when the bike, on it's way to the cement block wall, forced it's way between them and sent one flying.


Joe - What better place to ask about R1200R BMW rear drive failures than on a R1200R list?. Surely it won't use up 1/10 th the bandwidth of your pictures and it is something I'm sure some of us want to know if their is something going on or if it's BS. Personally I think it might be schadenfreude from the Guzzi group, but why not ask the people that know..
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Re: Rear Drive Failure

Post by Bob Ain't Stoppin' »

Oddly enough, a couple years ago I went to a Guzzi Breva, partly because of all the talk of rear drive failures on Beemers. I also liked the bike, and the 1200R wasn't available yet. After never having any problems with BMW rear drives, I had two seal failures in a year on the Guzzi. This with their new design CARC unit. Having oil on the rear tire is not fun, to my way of thinking. So the bike went to the dealer and I told him to keep it as a trade.

I'm happy with the BMW rear drive on the 1200R.
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Re: Rear Drive Failure

Post by Lost Rider »

mogu83 wrote: Joe - What better place to ask about R1200R BMW rear drive failures than on a R1200R list?. Surely it won't use up 1/10 th the bandwidth of your pictures and it is something I'm sure some of us want to know if their is something going on or if it's BS. Personally I think it might be schadenfreude from the Guzzi group, but why not ask the people that know..

Harry, you already know that there's been no reported FD failures on this forum, as a thread like this comes up every couple of months. :D


My photos don't use any of the forums bandwidth, it uses my photo hosting site SmugMug's.
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Re: Rear Drive Failure

Post by MTBeemer »

Never seen an exploding FD. Have seen one other example of a drive shaft failure as this appears to be. Happened in fairbanks on a GS with less than 600 miles. By the way, the last time I talked to the service manager at Trails End BMW in Fairbanks, he said they had seen one FD failure in the past three years. Not so bad considering that Fairbanks is a destination location for GSs carrying very heavy loads.
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Re: Rear Drive Failure

Post by SF_Hooligan »

There was a(nother) thread on BARF about this recently. There are some Beemer haters over there, and also lots of guys with Beemers. There's actually an inquiry by the NHTSA into BMW FD failures, but it's only looking at K1200LTs thus far, if I remember correctly. There are at least a couple guys in that thread that have experienced failures. There were several failures in the '07 Iron Butt rally as well.

That said, I haven't heard of any R1200R failures, although I believe the parts are pretty similar across the shaftie models of similar vintage. There are of course significant differences in load, usage, etc.
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Re: Rear Drive Failure

Post by mogu83 »

I think we can discount the 07 Iron Butt failures, or any pre 07 failures,that was when they were putting 240ml in the drives. Those bikes most likely (IMHO) had the seals blow out and because those guys were running around 300 miles between stops and doing quick stop and gos for gas (maybe at night) they likely ran the drives out of fluid before they noticed. Most of us gas up around 200 and would notice a major seal leak while doing a walk around after the fill up. I know I did.

So still no personal experience with a R1200R failure.
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Re: Rear Drive Failure

Post by SF_Hooligan »

A buddy of mine has a newer hexhead GSA. He had some seepage early on that wax fixed under warranty. Because of that I keep a good on my rear end, but no issues yet.
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Re: Rear Drive Failure

Post by gibbo111 »

A guy who occasionally comes on a club ride had this happen to his bike , it may well be the bike, guess what he replaced it with ? a camhead GS . It might be his bike as he has the same brand of pannier. Next time I see him on a club ride I'll try and get some details. Oh yes my R has 42000km and no problems. If 95% of GS owners only knew what they are missing!! Gibbo









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Re: Rear Drive Failure

Post by Caroanbill »

gibbo111 wrote:A guy who occasionally comes on a club ride had this happen to his bike , it may well be the bike, guess what he replaced it with ? a camhead GS . It might be his bike as he has the same brand of pannier. Next time I see him on a club ride I'll try and get some details. Oh yes my R has 42000km and no problems. If 95% of GS owners only knew what they are missing!! Gibbo
I can't make out the plate on the oter R1200GS Adv, but that picture certainly looks like NE NSW / SE Qld coastal scrub, doesn't it? (I grew up in the Tweed and have ridden a most of the sealed back roads between the Condamine / Warrego, Burnett and Clarence rivers, and the Pacific Ocean, over the years ... )
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Re: Rear Drive Failure

Post by Texas42 »

2007 R1200GS - 55K no failure, don't know of any personally
2005 K1200GT - 31K no rear drive failure, but many other things failed, including the read drive seals twice.
2002 K1200LT - 45K no rear drive failure, however there were numerous ones in the BMWLT.com group, I have only seen 4 personally, this bike did have a problem
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Re: Rear Drive Failure

Post by Ritalin Boy »

Good morning Rocksters,

I'd like to offer a little clarification on a few comments in this thread.

First, I did have a FD failure on the 2007 Iron Butt Rally while riding a very well prepared R1200RTP. This happened on the second leg of the rally outside of Edmonton around 11:30 on a Sunday morning. I was doing a walk around every gas stop, out there I was burning through 10 gallons in 225-250 miles. The mileage was low not because of a heavy load but because the police models are geared lower so at elevated pace the RPM's are up. I was doing walk arounds at every stop and the fluid was checked 36hrs previously at the checkpoint. My theory is the seal went, I lost fluid and poof goes the drive.

I also had a drive go bad but not leave me stranded on my 07 GSA with no apparent fluid leak. It got all "notchy" and it was replaced before it failed.

As far as the famous porta potty incident it was a chain of events that lead to an epic f***up. Here's the condensed version.

I have been the co-chair of the Yankee Beemer's Damn Yankees rally since 1999 with my good friend Dana Lewis, aka the Savant of the Pavement. As we grew the rally another good friend who is a NETRA Senior Enduro champion and I decided to take a page from the 49er rally and have a "trials" event, in our case we call it the Scottish Trials. Doug would set up the course and I would pre-ride it as a safety check. I'm no NETRA champ so the idea is if I can do it you can do it. We had been making the same course the same way for about 6 or so years. For background we also host a pretty good dual sport ride on Saturday morning.

Two years ago we had a bunch of NETRA riders who had migrated to F800GS and other larger dual sports and we invited them to join us for the rally.

As a result Doug wanted to increase the degree of difficulty for the trials and we changed out the jump which was a 24" 2.6 on a log to the tailgate of some Guzzi guy's trailer on a stack of logs. This is located at the crest of a rise of about 5' or so. Previously at this part of the course you do the jump, land the bike and go right around a manhole cover. this time Doug tightened up the course to we'd do the jump and go left around the manhole cover. The distance from the crest to the cinder block bathrooms is about 40'. On the previous course if you overdid the jump you would simply go straight and have no issues. (see what's coming?) :shock:

This was also the year that the AG (operator of the fairground) nailed the stalls in the men's room shut and told us we had to use additional porta potties which were placed behind the building.

I made a few runs and Doug decided it wasn't difficult enough so we set up some stakes and ribbons to make a pause and go at the bottom before the jump.

Next pass I stopped (standing on the pegs) at the pause n go and then got too hamfisted on the throttle and while the jump was great the moment I landed I knew I was in trouble. I got about 45 degrees of a 90 degree turn before bailing and watching my bike smack the porta pot to the right and bonce off the cinder block. There were tents and people to the right so I had no escape route. Within seconds of this happening for every person who wanted to check on me or lend a hand two or three more wanted to come in close and start taking photos. Kinda ghoulish don't you think? Fellow riders racing to photograph someones less then stellar moment isn't something I'd do so I asked them to please stop which most folks were happy to do. The photo here is the first I've seen.

We changed the course and 40 minutes later I rode the trials on Max's R80GS.

Image

If you come to the DYR this year you might even see a porta pot incorporated into the field events; I figure I'm the one guy who can get away with turning this near tragedy into a humorous moment as well as a cautionary tale.

Back to the subject at hand I have not heard of any drive failures on 2010 or later GS'es but I still hear of leaky seals. Perhaps the increase in fluid quantity provides a larger margin when the leak starts. At the press launch of the F800GS in South Africa I had a chance to discuss this in depth with some BMW engineers and at the time the percentage of failures was low enough that it wasn't triggering BMW's QC system but the negative press from a few high profile failures (including my RTP) was getting their attention.

I love the bikes and I tell my friends not to hesitate on buying one over FD stores. I suggest you check the seal every time you get gas and enjoy the ride.

Best,

Rob Nye
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