While My Final Drive Gently Weeps…

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I bought Endurance, my 2000 BMW R1150 GS motorcycle, new from Sierra BMW in Reno, Nevada, in January 2000. It was the perfect bike for what I wanted: lots of power, room for two-up riding, comfortable for long-distance travel.

I made small improvements over the years – a Corbin saddle, PIAA 510 driving lights, Ohlins shocks – and was totally happy with her, to the point of planning to buy BMW again, when it came time to get another bike.

Until August 2012.

A bit of backstory is needed here: BMW Motorrad successfully advertises its bikes as high-mileage, reliable, go-anywhere machines. But some BMWs have an Achilles’ heel, a failure tendency for their final drives – the collection of shaft and gears (instead of chains or belts) that transmit power from the transmission to the rear wheel. It’s a design flaw that BMW has never officially admitted, but has instead quietly addressed through a series of upgrades.

Compounding the problem is that BMW’s dealership network is spread mighty thin.  It has only one dealership in all of Montana, for example. So if you have a serious mechanical problem, you’re seriously screwed.

I learned of this a couple of years after the purchase and kept an eye on mileage, since the drives tend to break down roughly every 40,000 to 50,000 miles. I had my first service in September 2004, with 47,000 miles on the clock.

At the beginning of 2012, Linda and I decided on an August ride to Glacier National Park in Montana – a long way from Washington, D.C. At that point, Endurance had racked up a little more than 86,000 miles and I knew it was time to get her final drive serviced again.

Early in the year, I took her to an independent mechanic in Virginia who is highly regarded (almost legendary) in BMW circles. He did the work, replaced worn-out parts and gave me an expensive bill, which I expected.

Endurance in Montana.
Endurance in Montana.

As summer drew near, I prepared the bike for the ride, expanding the carrying capacity and adding spare fuel bottles and whatnot. A little more than two weeks before we were due to leave, I was checking the underside of the bike and happened to run my hand around the bell housing of the final drive. It came away wet.

I stared at it, dumbfounded, thinking, “no, no, no…” and I pulled the rear wheel to find the rear seal had blown. I couldn’t believe it. Still can’t.

I had to get it fixed quickly, otherwise the ride would be impossible. I couldn’t take it to the independent since he was too far away. A nearby dealer was able to squeeze her into its service schedule and they replaced the seal and some other parts and again I got an expensive bill. Did the independent screw up or miss something? There’s no way for me to know.

2013-Yamaha-Super-Tenere-Black-1920x2560

Endurance ran flawlessly during that trip, but my cautious faith in BMW, admittedly shaky to begin with, died completely. I’ll keep the BMW and maintain her as perfect as I can, but when I ran across a new 2012 Yamaha Super Tenere on the floor of a Falls Church dealership, I bought it.

Following my predilection for naming my bikes after Antarctic exploration ships, I call her Terra Nova.

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