Bridgestone S21 Does Not Fit Well On Speedtwin

Discussion in 'Tyres' started by Yenso, Oct 24, 2019.

  1. Yenso

    Yenso New Member

    Oct 24, 2019
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    #1 Yenso, Oct 24, 2019
    Rear stock dimension 160/60-17 seems slightly wider in s21 than the pirelli diablo rosso 3 that came with the bike from factory.

    It is already tight clearance between chain and tire with the diablo rosso, so with the bridgestone s21 the chain rubs the tire.

    Thanks for any tip of other tires tried and fit well in stock 160/60-17
     
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  2. Helmut Visor

    Helmut Visor Only dead fish go with the flow
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    #2 Helmut Visor, Oct 24, 2019
    Hei Yenso, and welcome in :cool::cool:
     
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  3. Yenso

    Yenso New Member

    Oct 24, 2019
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    #3 Yenso, Oct 24, 2019
    Thanks!!
     
  4. stevethegoolie

    stevethegoolie Elite Member

    Oct 16, 2014
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    #4 stevethegoolie, Oct 24, 2019
    Hi, Yenso.
    Avon tyres seem to be a favourite herein for Bonneville derivatives.
     
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  5. Yenso

    Yenso New Member

    Oct 24, 2019
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    #5 Yenso, Oct 24, 2019
    Thank you Steve! I will remember that when getting a new one

    Also just wanted to give anyone else a heads up on the bridgestone s21 just in case. Could be just a one spesific batch though, but had same issue with two different batches
     
  6. RSReggie

    RSReggie Active Member

    Apr 9, 2019
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    #6 RSReggie, Oct 25, 2019
    Have you checked wheel alignment ?
     
  7. Yenso

    Yenso New Member

    Oct 24, 2019
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    #7 Yenso, Oct 25, 2019
    Not personally, but assume my local Triumph dealer did when I came back first time with quite a significant part of tire cut off by the chain. They measured the width if the tire and it was wider clearly a bit wider than diablo rosso on the edge profile. Will ask them though when returning for new tire. Thanks!
     
  8. darkman

    darkman Crème de la Crème

    Oct 26, 2015
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    #8 darkman, Oct 25, 2019
    The profile of the Pirellis is far more curved than other tyres as they are designed to make the bike steer quicker and tend to be on the narrow side, almost all other manufactures have flatter/wider tyres.
     
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  9. Dartplayer

    Dartplayer Crème de la Crème

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    #9 Dartplayer, Oct 25, 2019
    Hi Yenso and welcome to the forum :cool: helpful advice
     
  10. Wessa

    Wessa Cruising

    Apr 27, 2016
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    #10 Wessa, Oct 25, 2019
    Thanks for the info on the tyres. I will certainly watch out for this when my speed twin needs tyres..
     
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