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max width for rear tyre?? xj650 -82

Discussion in 'XJ Technical Chat' started by Tommi Mäkelä, Mar 22, 2016.

  1. Tommi Mäkelä

    Tommi Mäkelä New Member

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    Hello mates!


    I´m new on this forum, so my apologize but i obviously don´t know how to use "Search"...

    I have Yamaha Xj 650 yearmodel 1982, i´m about to modify it to a scrambler.

    Can someone tell me what is the maximum width for rear tyre? Rim is 18 inches... i think
    that a standart tyre is 120/80/18

    Driveshaft would be the first problem......

    Any tips would be nice to have!


    Tommi/ Finland
     
    Tommi Mäkelä, Mar 22, 2016
    #1
  2. XJ550H

    XJ550H Well-Known Member Premium Member

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    Last edited: Mar 22, 2016
    XJ550H, Mar 22, 2016
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  3. Tommi Mäkelä

    Tommi Mäkelä New Member

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    Actually i checked my tyres again....

    rear tyre 130/70/18 at the moment..
    There is 10mm gap between the tyre and the driveshaft..... so what would be the max width for rear tyre, without scrathing...?
     
    Tommi Mäkelä, Mar 22, 2016
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  4. XJ550H

    XJ550H Well-Known Member Premium Member

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    it is not an exact thing due to different styles and manufactures


    more incorrect data
    thanks for the correction K-moe
     
    Last edited: Mar 22, 2016
    XJ550H, Mar 22, 2016
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  5. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    130. Any wider and there will be rubbing on the driveshaft housing. Also, not all 130 width tires will fit without rubbing. look for tires that have a smooth transition from the tread to the sidewall.
     
    Last edited: Mar 22, 2016
    k-moe, Mar 22, 2016
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  6. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    The figures you are computing with the aspect ratio (the number after the /) are for the sidewall height, not for the tire width. The width is the first number, and as you pointed out will vary some from one tire style to another, form one manufacturer to another, and some cases from one otherwise identical tire to another.
     
    k-moe, Mar 22, 2016
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  7. Tommi Mäkelä

    Tommi Mäkelä New Member

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    That´s true, of course it depends the profil of the tyre.
    I just thought that somebody might have a recomendation about the scrambler tyres, with good fitment.

    Well, i quess i just have to try something :)
     
    Tommi Mäkelä, Mar 23, 2016
    #7
  8. Blackfnttruck

    Blackfnttruck Member

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    When I bought my bike it came with a 130/90 18, Never rubbed, I can't remember what make it was. I have since mounted a Bridgestone S11, 130/90 18. It is not on the bike yet, so hopefully it fits OK. I will let you know in a day or two.
    Mine is also an XJ650RJ Seca
     
    Blackfnttruck, Mar 23, 2016
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  9. Blackfnttruck

    Blackfnttruck Member

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    Mounted the tire setup above, no rubbing issues on mine with the 130/90-18 S11.
     
    Blackfnttruck, Apr 9, 2016
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