rubber soles in shoes gets harder over time?

Discussion in 'Shoes and Apparel' started by iyudhi, Jun 28, 2012.

  1. iyudhi

    iyudhi New User

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    Hello all,

    Recently I was having this conversation with a friend. I like to stock tennis shoes whenever I find a good deal. He disagreed, saying that rubber soles in shoes get harder over time, and therefore it might not be a good idea to stock shoes for a long time, because it cannot be good for your knees.

    Since we're both no experts in shoes, I'm wondering if anyone know if that's a fact or just a myth?
     
    #1
  2. FlameYo

    FlameYo New User

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    Rubber outer/mid soles get softer over time since they get more flexing and there's less rubber. The stiffness is gone by this time for most shoes. What shoes does your friend use to make this opinion?
     
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  3. iyudhi

    iyudhi New User

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    Barricade V

    So you don't think that's not true then?


     
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  4. Gasolina

    Gasolina Professional

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    I guess the OP's question was for shoes on deadstock, not shoes being used.

    Slightly related, but deadstock shoes do have drawbacks. The glue on shoes dries / flakes out usually around 4-6 years, at least I heard.

    So you might get some detached midsoles / outsoles
     
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  5. iyudhi

    iyudhi New User

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    sorry I couldn't really understand the terminologies.. so basically you mean: if the shoes aren't being used for a long time, that becomes deadstock.. is that correct? if yes, how long does it usually take to get to that point?

     
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  6. WildVolley

    WildVolley Legend

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    I think it really depends on the shoe.

    Also, it isn't clear to me that a shoe becoming stiffer over time is necessarily bad for your knees. Softer shoes may reduce impact on knees but increase torque due to less stability.
     
    #6
  7. mrtrinh

    mrtrinh Professional

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    I've never had any issues. Had vapor 6's stocked up for a year, always played like new
     
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  8. nyc

    nyc Hall of Fame

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    You're actually both right.

    Any flexible plastic material will lose flexibility over time. Plastizisers are ingredients that give the material flexibility, and they do migrate to the surface, resulting in discoloration and increased brittleness. For example my Ski boots completely crumbled after 10 years.

    Having said that, it takes a longer period of time - so storing Barricade Vs for a year shouldn't be a problem.
     
    #8
  9. OldFedIsOld

    OldFedIsOld Professional

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    The only thing that I can think of that can make a shoe feel harder over time is if the shoes were stored in a cold room with a lack of moisture. More moisture= more flexing, colder= molecules of rubber coming closer together which makes it more harder.
     
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