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Tire and swing arm

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    Tire and swing arm

    I have a 76 GS 750, What is the widest tire I can put on the stock rim and in the swing arm? Also what would I have to do to run a modern sport bike tire and rim? Also can anyone point me in the direction for an extended swingarm?

    #2
    120/90-18
    Fit a 1100 E swing arm and modern wheels
    No idea
    1978 GS 1000 (since new)
    1979 GS 1000 (The Fridge, superbike replica project)
    1978 GS 1000 (parts)
    1981 GS 850 (anyone want a project?)
    1981 GPZ 550 (backroad screamer)
    1970 450 Mk IIID (THUMP!)
    2007 DRz 400S
    1999 ATK 490ES
    1994 DR 350SES

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      #3
      You'd need an 1100E swingarm with a conversion bush for the swingarm bearings. A 4.5" Katana wheel with a GS550 Sprocket drive hub & an offset front sprocket. 530 chain conversion. You'll also need to modify the brake tie arm.

      A 160 tire is the biggest without even more modifications but it can be done. How much money & time do you want to spend & how good an engineer are you?

      Here's a 750 SPecial I built a few years ago from an 83 model. This was running a 170 on a 5.5" wheel.

      GS750ES-GSXR by salty_monk, on Flickr
      Last edited by salty_monk; 05-22-2021, 05:07 PM.
      1980 GS1000G - Sold
      1978 GS1000E - Finished!
      1980 GS550E - Fixed & given to a friend
      1983 GS750ES Special - Sold
      2009 KLR 650 - Sold - gone to TX!
      1982 GS1100G - Rebuilt and finished. - Sold
      2009 TE610 - Dual Sporting around dreaming of Dakar.....

      www.parasiticsanalytics.com

      TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/

      Comment


        #4
        A wider tire is mostly for looks. Modern tires are far superior to what was available "back in the day", so the 120 that Big T suggested will work quite well.

        As others have noted, if you really do want to go wider, you will at least need to change the wheel, and the swingarm is also a good upgrade.
        If you're not living on the edge, you're taking up too much space.

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