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Thread: 1985 BMW K100 RT (whats it worth)

  1. #1
    dennisoates
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    1985 BMW K100 RT (whats it worth)

    HI Guys,

    Am new to BMW,s what should i look for on this bike,Found this online with only 20,000 miles, in very good shape, 2 owners, lots of extra parts, they want 2500.Am new to BMW,s what should i look for on this bike for problems


    thanks for the tips,


  2. #2
    Registered User
    Join Date
    Oct 2003
    Location
    Naperville, IL
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    288
    Generally the low fuel indicator lights don't work correctly on these early K bikes. Check for spline lube, when was it last done. From the pic you posted looks like clean bike. Aftermarket rear bag and passenger back rest. Is the seller an MOA member ?

    You don't say what extra parts are included. $2500 is a starting point. Kelly Blue Book (kbb.com) does have a used motorcycle section to their site.

    Fill out your profile- what part of the country are you and the bike in -maybe someone here with knowledge could look it over with you.

  3. #3
    Rally Rat
    Join Date
    Jul 2007
    Location
    New Jersey
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    302
    $2500 is on the upper end of the price spectrum. Fair enough but a 25 year old bike has a lot of rubber and plastic parts that need replacement. If those things had already been taken care of I would buy it.

    Don Eilenberger has forgotten more than I've ever learned on K bikes so read his posts.

    As an owner of the same bike these are my impressions after 3 years:
    1. It is a great bike to ride in the Fall, Winter and Spring. Once the temperature hits about 85, it is too hot to ride.
    2. Once it is tuned up and sorted out, it will be reliable and easy maintain. Expect to log a few hundred thousand miles unless a minivan runs it over.
    3. You will never find a bike with a better power band. I have taken turns in (too) high gear and passed tractor trailers in (too) low gear and the bike handled it with great forgiveness.
    4. I test rode a $20,000 R1200RT last year and it was only marginally better than my K100RT. Don't get me wrong, I would accept an even trade but it was not worth a new bike payment in my estimation.
    5. If you do not work on your own bike, these are still being serviced by BMW dealers.
    6. Take care not to damage the fairing. It is getting difficult to find replacement parts.

    PS: Not a summer bike. I bought mine for under $2000 on a hot summer day.
    Last edited by zoridog; 07-27-2010 at 02:39 PM. Reason: spelling

  4. #4
    Rally Rat
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    New Jersey
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    If you like to tour, you will need a better saddle so plan on spending $$ for a touring saddle. You may also want a taller windscreen for touring.

  5. #5
    Registered User
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    Heat can be an issue, since early on I added K-guards ( no longer made, but may find a used set) and one of the vented LT fairing uppers to mine it is tolerable.

  6. #6
    angysdad
    Guest
    If the bike is as clean as it looks, $2500 seems fine. Don't worry about it being 25yrs old. I have an 85 K100 and I would ride it anywhere. I also have a 77 GL1000that runs great.
    Check out what else you can get for that money, and I think this one will win out.
    I have always ridden unfaired bikes as I like wind and I do not like the heat or plastic. To each his own.
    The early Ks had lots of speedo problems. It may have been replaced (common) so do not take milage at face value. Someone else mentionned slines.
    Bullet proof engines.
    If you like it, buy it!

  7. #7
    2old2rockNroll
    Guest

    K100 RT Evaluation

    PROS:
    Rock solid dependability. Inspired engineering - my 25 year old RS still amazes me with it's quality. Carves like a knife. Goes like a bat. Good aftermarket support. With decent maintainence it will out live you. Unlike later versions, early bricks had bomb-proof final drives. IMO, one of the 5 best motorcycles ever built...

    CONS:
    K100's are top-heavy parking lot pigs. In summer traffic you can roast behind the fairing. They can be expensive if you are not inclined to do your own maintainence.


    $2500 for a Kbike with this mileage sounds good to me, buy it!

    jb

  8. #8
    Old man in the mountains osbornk's Avatar
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    Location
    Marion VA-In the middle of some of the best riding in the country.
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    I had this exact dolomite gray bike 13 years ago as my first BMW. It was very fast and dependable once I addressed a few issues.

    The speedometers give a lot of trouble on the early K bikes. Mine quit working on and off. I took it apart and got lucky when I cleaned the connections and corrected the problem.

    The differential seal started leaking (I think from sitting a lot). I replaced it myself with no problem and found the rear splines needed grease badly.

    I put synthetic oil in it and it seeped from the rear seal. I went back to conventional oil and the seepage stopped.

    Hottest bike I have ever had (both performance and especially temperature). It will burn you up in hot weather.

    It was buzzy in both the bars and pegs at around 60 MPH. The buzz went away at about 80. The buzz drove me nuts and that is the reason I sold it and replaced it with a K75RT. At the time, the top speed limit within 40 miles of my house was 60.

    A lot of the available parts and accessories (seats, etc) would not fit the 85 models but would fit all of the newer models.

    It was a great bike with more power than the newer versions but the heat and buzz caused me to sell it.
    'You can say what you want about the South, but I almost never hear of anyone wanting to retire to the North.

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