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    Tire question...?

    Hi,

    I have two bikes that need tires.

    GS750 1977
    Will a 130/90-18 fit? Presently there is a 120/90-18 installed...which has a tube (spoke wheels)
    Can I purchase any type of rear tire and put a tube in it? What size tube? They where listed differently from the tire sizes on one site I was looking.

    GS750E 1983
    There's presently a 100/90-R16...what does the R stand for? I found a 100/90-16H...will this fit?

    Any info is appreciated.

    Cheers,

    Dave

    #2
    Originally posted by coolio View Post
    Hi,

    I have two bikes that need tires.

    GS750 1977
    Will a 130/90-18 fit? Presently there is a 120/90-18 installed...which has a tube (spoke wheels)
    Can I purchase any type of rear tire and put a tube in it? What size tube? They where listed differently from the tire sizes on one site I was looking.

    GS750E 1983
    There's presently a 100/90-R16...what does the R stand for? I found a 100/90-16H...will this fit?

    Any info is appreciated.

    Cheers,

    Dave
    The R usually denotes a Radial and in rare case a speed rating, depends where the letter is placed in the sequence. In your case I would say Radial on this one, the H is a speed rating. H=130mph The 100/90-16H is a non radial or as the other denotes a radial. And yeah the 100/90-16H will fit though remember it isn't a radial.

    On the 77 750 you are pushing the width with a 130 on the rear. On my 1980 GS750E I installed a 5.10 (old time measurement to the new 130/90-18H) The 5.10 screwed with my handling big time. I went back to pretty much the stock size tires, cured the problem. The 120/90-18 is fine. The tube of the same size is what I would look for.
    sigpicMrBill Been a GSR member on and off since April 2002
    1980 GS 750E Bought new in Feb of 1980
    2015 CAN AM RTS


    Stuff I've done to my bike 1100E front end with new Sonic springs, 1100E swing arm conversion with new Progressive shocks installed, 530 sprockets/chain conversion, new SS brake lines, new brake pads. New SS fasteners through out. Rebuilt carbs, new EBC clutch springs and horn installed. New paint. Motor runs strong.

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      #3
      Originally posted by mrbill5491 View Post
      The R usually denotes a Radial and in rare case a speed rating, depends where the letter is placed in the sequence. In your case I would say Radial on this one, the H is a speed rating. H=130mph The 100/90-16H is a non radial or as the other denotes a radial. And yeah the 100/90-16H will fit though remember it isn't a radial.

      On the 77 750 you are pushing the width with a 130 on the rear. On my 1980 GS750E I installed a 5.10 (old time measurement to the new 130/90-18H) The 5.10 screwed with my handling big time. I went back to pretty much the stock size tires, cured the problem. The 120/90-18 is fine. The tube of the same size is what I would look for.
      Thanks for the info it's much appreciated...I'll stick with the stock 120 for the 77 and look for a radial (R16) for the 83.
      Dave

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