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Thread: 150/70 17 tyre to replace 160/60 17

  1. #1
    Lurker
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    Feb 2019
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    Kawasaki ZZR400
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    Eastern Cape
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    Default 150/70 17 tyre to replace 160/60 17

    Hi,

    I have a Kawasaki ZZR400.
    Want to replace the rear tyre.
    Can get a new one for a very good price.
    My current one is 160/60 17, the one I can get is 150/70 17.
    Should there be any issues if I change size?
    I understand a 150 is not as wide, but the 70 makes the sizes very similar in the end.

    Thanks

  2. #2
    Hooligan Biker
    Join Date
    Oct 2013
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    CBR1000R, GSX650F
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    Gauteng
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    Default

    I don't think going thinner would be the best idea. I think you will create some stretch on the tire to the rim that might make it handle a little funny and cause the tire to wear even quicker as the contact patch would be even smaller.

    My Suzuki also comes with a 160 tire and I run 180 on it with no problems.

    If it really is a good deal though, go for it and try it out. I don't think it would be unsafe to do so.

  3. #3
    Biker Trash Skully-SXV's Avatar
    Join Date
    Aug 2013
    Location
    Maroelana, Pretoria
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    '13 Aprilia Tuono V4R
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    Gauteng
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    Default

    The 150 will be fine. When it is mounted to the rim, it will "flatten" out the profile a tiny bit in theory, but the 70 section will make it almost the same rolling diameter as the 160/60.
    And it is not such a massive change in tyre size, it is essentially 5mm on each side of the tyre.

    I have a friend who did the same on his old FZR 400 (160/60 to a 150/70), and did not have any issue in the handling department, and he did many track days on it as well.
    "I've always wanted to go to Switzerland to see what the army does with those wee red knives." - Billy Connolly

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