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Thread: R100gs

  1. #1
    Registered User
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    Question R100gs

    I'm considering buying a 1989 R100GS with 47K miles. I'm not familure with these bikes, anything I should watchout for?

    John
    John Duncan

  2. #2
    Registered User widebmw's Avatar
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    Thumbs up

    Take a look at the Airheads. From their website you can get on their online-list.
    http://www.airheads.org/

  3. #3
    Alps Adventurer GlobalRider's Avatar
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    Re: R100gs

    Originally posted by John Duncan
    I'm considering buying a 1989 R100GS with 47K miles. I'm not familure with these bikes, anything I should watchout for?
    John
    Three things:

    The driveshaft, the Valeo electric starter and the omission of a circlip on the transmission output shaft.

    The driveshaft can have quite a range of service. Someone I know got 141,058 kms (87,688 miles) on his driveshaft, but the norm is much lower depending on how the motorcycle was treated.

    The Valeo electric starter tends to drop magnets. Even though they aren't supposed to be rebuildbable, at least not the motor housing portion, I have rebuilt the Valeo starter twice on my 1990 R100 GS. I have a write-up on my web site.

    BMW in their infinite wisdom decided to delete a part in the transmission to save a few cents. They deleted a circlip and the corresponding groove in the output shaft that sits next to the front bearing. As a result of loading the transmission in top gear, it applies a side force on the ball bearing (not designed for side loads) and can fail. They usually go at the 80,000 mile mark. I use Dow Corning gear Gard M additive in my transmission which should help. I also drive at a more sedate pace which puts less of a load on it.

    That said, I wouldn't part with my 1986 R80 G/S PD or my 1990 R100 GS for anything, not even with a new R1150 GS Adventure on the way.

  4. #4
    Ian
    Guest

    Two other good sources...

    Adventure Rider

    and the GS list

    Great bikes.

  5. #5
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    Miami Springs, FL
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    I owned a 92 for 4 04 5 years. Absolutely fantastic and I miss it. I bought a gs1100 in 95, have 72,000 miles now. Still miss the 100.
    Riding the Florida Keys.

  6. #6
    Registered User
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    Apr 2003
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    Miami Springs, FL
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    100 GS

    They are excellent bikes. If ther is no rust and you are paying less than 4500 t's probably a great deal. I owned one for about 6 years. Any problem it ever had (very rare and few) was fixable in my backyard with basic tools. Dependable as all hell. Bought it in The Florida Keys and still miss it today.

    Good luck.
    Riding the Florida Keys.

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