New tyres for my '77 GS750

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  • nickjtc
    • Feb 2026

    #1

    New tyres for my '77 GS750

    It's getting closer and closer to the time when the bike will be back on the road for the first time in 27 odd years. The next question is: what tyres to bung on?

    The manual says a 3.25 19 on the front and 4.00 18 on the back, which equate to 100/90 19 and 110/90 18 in new money.

    So now the question is, which brand?

    Suggestions?
  • allojohn
    Forum Sage
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    • Jan 2011
    • 3515
    • NoMo, MN

    #2
    Let the fun begin!...
    Avon Road Riders (don’t mention cracking) and Pirelli Sport Demons are the two I know and I’d ride both again.
    -Mal

    "The only reason for time is so that everything doesn't happen at once." - B. Banzai
    ___________

    78 GS750E

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    • Big T
      Forum LongTimer
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      • Mar 2005
      • 12401
      • West Slope, OR

      #3
      Avons for me
      you can still get the 4.00-18, I think I got the last 3.25-19 a few years back
      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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      • Brendan W
        Forum Sage
        Past Site Supporter
        • Jul 2013
        • 4929
        • Wexford, Ireland

        #4
        I'm on Continental.
        Used TK11 and 12 front and back.
        Have a ContiGo on the back at the moment.
        No complaints.
        I think they list a 3.25 19
        97 R1100R
        Previous
        80 GS850G, 79 Z400B, 85 R100RT, 80 Z650D, 76 CB200

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        • bwringer
          Forum LongTimer
          Bard Award Winner
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          • Oct 2003
          • 17066
          • Indianapolis

          #5
          The Avons, Pirellis, and Contis are fantastic but spendy.

          If you need to save more than a few pfennigs, the Shinko 712 is fantastic for the money.

          I've found them very sticky but somewhat short-lived, at least under my abuse on my much heavier bike.
          1983 GS850G, Cosmos Blue.
          2005 KLR685, Aztec Pink - Turd II.3, the ReReReTurdening
          2015 Yamaha FJ-09, Magma Red Power Corrupts...
          Eat more venison.

          Please provide details. The GSR Hive Mind is nearly omniscient, but not yet clairvoyant.

          Celeriter equita, converteque saepe.

          SUPPORT THIS SITE! DONATE TODAY!

          Co-host of "The Riding Obsession" sport-touring motorcycling podcast at tro.bike!

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          • nickjtc

            #6
            Thanks for the input. I assume that if tubeless tyres are used then it is OK to put tubes in them...??

            I doubt that 1977 rims will be suitable for the conversion to tubeless-only by sealing the spoke nipples and valve stems. Did that on my '96 Triumph Tiger and it worked fine. The rims had the moulded in lip around the bead which held the tubeless tyres safely.

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            • allojohn
              Forum Sage
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              • Jan 2011
              • 3515
              • NoMo, MN

              #7
              Originally posted by nickjtc
              Thanks for the input. I assume that if tubeless tyres are used then it is OK to put tubes in them...??
              Correct. Now, shall we talk about balance beads?
              -Mal

              "The only reason for time is so that everything doesn't happen at once." - B. Banzai
              ___________

              78 GS750E

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              • bwringer
                Forum LongTimer
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                • Oct 2003
                • 17066
                • Indianapolis

                #8
                Originally posted by allojohn
                Correct. Now, shall we talk about balance beads?
                Troublemaker...
                1983 GS850G, Cosmos Blue.
                2005 KLR685, Aztec Pink - Turd II.3, the ReReReTurdening
                2015 Yamaha FJ-09, Magma Red Power Corrupts...
                Eat more venison.

                Please provide details. The GSR Hive Mind is nearly omniscient, but not yet clairvoyant.

                Celeriter equita, converteque saepe.

                SUPPORT THIS SITE! DONATE TODAY!

                Co-host of "The Riding Obsession" sport-touring motorcycling podcast at tro.bike!

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                • nickjtc

                  #9
                  Originally posted by allojohn
                  Correct. Now, shall we talk about balance beads?
                  Aha, I suspect the proverbial "can o worms" is about to be opened. I have used balance beads in the past. They seem to work, but take away from the satisfying "4 beer job" of spinning the wheel on a balancing spindle and using wheel weights.

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                  • Rich82GS750TZ
                    Forum Guru
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                    • Jun 2018
                    • 5585
                    • Mifflinburg, PA / Land of Tar & Chip

                    #10
                    Originally posted by nickjtc
                    Aha, I suspect the proverbial "can o worms" is about to be opened. I have used balance beads in the past. They seem to work, but take away from the satisfying "4 beer job" of spinning the wheel on a balancing spindle and using wheel weights.
                    After 4 beers, I can only imaging that my wheel would be even more unbalanced than myself. But I’m a lightweight and the beers I drink typically are heavy with a high ABV.
                    Links

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                    • rphillips
                      Forum Guru
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                      • Jun 2005
                      • 7622
                      • Norene TN

                      #11
                      Some of my tires have beads, others have weights. I really can't tell the difference, other than the beads make the wheel look better.
                      1983 GS1100E, 1983 CB1100F, 1991 GSX1100G, 1996 Kaw. ZL600 Eliminator, 1999 Bandit 1200S, 2005 Bandit 1200S, 2000 Kaw. ZRX 1100

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