Rear tires on the front??.

Discussion in 'Land of the Rising Sun: ADV Bikes from Japan' started by NortwestRider, Sep 27, 2012.

  1. itsatdm

    itsatdm Long timer

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    You are right, but for a reason I ever heard of before..


    What is a tread splice? When a tire is manufactured the tread portion of the tire starts out as a long flat strip. This strip is wrapped around the tire and the two ends are cut on an angle so one end overlaps the other rather than having square cut ends.
    This overlapping point or splice offers a bigger surface area to bond together, rather than the small surface area provided by square cut ends. (Imagine gluing your fingertips together, as opposed to gluing along the entire length of your fingers laid on top of each other. Like an angled splice, the overlapping fingers result in a much stronger bond).
    To further ensure the strength of this bond along the tread splice the directional arrow will show you which way to mount the tire so that when the rider is “on the gas”; the acceleration force on the rear tire is pressing the splice together, rather than peeling it back.
    As for braking, 80 % of the braking should take place in the front on most bikes. Therefore, the front tread splice is run in the opposite direction than that of the rear, so when the rider is on the brakes, he’s not peeling the tread splice back.
    If you are using a tire that has a directional arrow for rear rotation only and for some reason you want to put it on the front, make sure it is rotating in the opposite direction so you don’t aggravate the tread splice. Avon Tyres.
    #41
  2. browneye

    browneye PIN IT & BANG GEARS

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    I think you'll find most of them are opposite. The fronts will V to the rear and the rears will V to the front. The rears drive the bike forward and the fronts get driven to stop.

    I would tend to agree that running the V forward on the front could lend to hydroplaning. So you're right in that aspect. If you run a rear in the front in the direction indicated for a rear installation, you get the V facing forward. You want it facing back to channel water and for breaking grip. Hence running them in reverse rotation. I also think this is important for best breaking power on dirt.

    My scorpion trails are opposite, front to rears. Sipes in a V facing back to the outside, but the rears have the V facing forward to the outside for best grip when accellerating.
    #42
  3. browneye

    browneye PIN IT & BANG GEARS

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    +1
    You're on to something there. :deal
    I have not heard of that before but it makes perfect sense.
    #43
  4. mustang

    mustang Lurker Extraordinaire

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    This is a dedicated Shinko 705 front tire mounted in the direction of the rotation arrow .........

    [​IMG]

    this is a Shinko 705 REAR tire mounted backwards on the front .........do you notice any thing similar about the two pics ?:evil

    [​IMG]
    #44
  5. gateman

    gateman Long timer

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    [​IMG]

    Thats on backward. The direction arrow runs back ward. Its a back tyre by design mounted on the front. 38,000K's on that tyre in this photo. No bullshit.

    SO I GUESs IT WORKS.

    [​IMG]

    and thats a view from the back after a dash across Australia and back.
    Same bike same tyres same trip before and after.
    #45
  6. sidetrack one

    sidetrack one Chief Tiddler

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    That looks like a bit of a long distance weapon you got there Gateman, nice:clap:clap
    #46
  7. gateman

    gateman Long timer

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    Funny how it goes. I really like those Tigers.


    These Avon's are about the only thing thats never changed on the bike from trip to trip.
    Often I just go bush with saddle bags only. Other times nothing for a day ride to some place on mixed road surfaces and sometimes its nearly all blacktop and to a time frame hence that aux tank.

    I like that no matter what the conditions of a road I have a high chance of negotiating them. Sand track out to a beach or a shale road up to a lookout or crossing snow covered roads. It all works.

    The reversed principl is simple. The grip for drive ( normaly fitted rear) is now used up front to give stability in turns and braking.
    #47
  8. jdrocks

    jdrocks Gravel Runner

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    this tire question has been kicked around since forever. when i ran a 130/80 Tourance on the front, it was always with the rotation arrow, TKC the same.

    when the question was asked of Metzler, here's what they had to say back in 2010...

    From: Metzeler B2C Moto, US [sa.motobc01us@pirelli.com]
    Sent: Fri 3/12/2010 8:17 AM

    Subject: tourance tire - rear mounted on front

    Hello
    One should never run a tire backwards. The exception to this rule is if the tire is marked (at the sidewall arrow) as a dual rotation tire. This happens typically only with scooter tires but virtually never with a motorcycle tire.

    Tire's have a tread pattern and tread cap (compound) orientation that is important to the safe handling of the application and by running the tire backwards one could help fester a future problem with the tire. Then one should note that the construction differences between a front and rear tire are radically different in material, shape, and compound so this too could have a negative effect on the handling of the bike. The last thing to look at is the possibility of uneven wear when the tire is used backwards. Thanks for the question and have a great day.

    NA Metzeler Consumer Affairs
    877 202-4993
    www.us.metzelermoto.com


    i really liked the 130/80 rear mounted up front, and wouldn't hesitate to do it again, especially for a long range trip where tire wear and wheel protection (an added benefit) are very important. i ran this setup for 16,000 miles, all weather and road conditions imaginable.

    people have their opinions, but if you're going to take a hard stance in the discussion, at least have some first hand experience on the subject.
    #48
  9. NortwestRider

    NortwestRider TRIPOD ADVENTURER !!

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    I emailed Shinko and asked which way I should run one of there rear tires on the front,I will post there reply later when I get home .


    Sent from my iPhone using Tapatalk
    #49