New tyres / wearing in

Discussion in 'Australian Motorcycles' started by Yeebok, Aug 7, 2007.

  1. Yeebok

    Yeebok Guest

    OK Fritz gets his new tyres tomorrow.

    I know I have to wear / scrub / run them in but I'm new to bikes as you
    all know - just *how* do I do so ? All I know is "they're likely to be
    waxy" which sounds dangerous :) .

    I presume 'gentle riding gradually becoming less gentle' but over how
    long, can I tell by looking at the tyres ? That sort of stuff.

    Be gentle, it's a serious question. I'm referring to recall-safe Pilot
    Road 2's - 110/70 + 150/70.
     
    Yeebok, Aug 7, 2007
    #1
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  2. Ive heard a lot of hype about this, and it can be quite hard to separate
    fact from fiction here.

    A lot of guys say that tyres have 'ozone' on them. I odnt know about that,
    but they do have something like mould release on them which helps to
    preserve the rubber a bit and prevent dry rot. My personal experience of
    tyre is that grippier sport tyres usually 'turnover' a lot more quickly at
    shops, maybe for this reason they seem to be less slippery at fitting?

    Cheap nasty tyres seem to take a lot more scrubbing in, and lets face it;
    they have less grip then anyway. One thing that i have head from a few guys
    i believe is that they 'season' their tyres before use where they can. They
    do this by ideally throwing them up on top of a tin roof for a day or two in
    summer. Theories say that they 'outgas' or something - they do seem a bit
    grippier this way.

    If your ryres are already fitted, some of my mates like to crub their rear
    in with a couple of quick burnouts in gravel or dirt. not sure if this
    works at all. For me, I'd just take it easy - dont try to find the limits
    of your lean at the first corner, or it may be your last ;-) just gradually
    lean over a bit more each time. have look at your tyres every day. you
    can learn a lot from looking at other guys tyres too. I always like to
    compare guys riding the same bike, see how far they're getting it over ;-)

    Shaun
     
    Shaun Van Poecke, Aug 7, 2007
    #2
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  3. This should do it;


    HTH ;-)

    --
    Bob Milutinovic
    Cognicom - "Australia's Web Presence Specialists"
    http://www.cognicom.net.au/
    telephone (0417) 45-77-66
    facsimile (02) 9824-2240
     
    Bob Milutinovic, Aug 7, 2007
    #3
  4. Yeebok

    Nev.. Guest

    yes it can...
    are these two statements fact or fiction?
    Grippier? Surely "seem grippier" is a subjective opinion, reinforced by
    the people who do that (never heard of the practice myself) to justify
    their actions. If it really does make them grippier, why don't we see
    MotoGP teams putting their tyres out to sunbake?
    It will improve grip on the part of the tyre in contact with the road,
    but it's the lack of grip when cornering which is the concern with new
    tyres, so it might be a good way to impress your mates, but not very
    helpful, unless you're doing some pretty trick figure eight burnouts
    while standing off your bike.
    ahh at last some sensible advise.
    Don't compare apples and oranges. Different tyres the same sizes can
    have different profiles depending on the manufacturer. On my bike with
    Bridgestone tyres (various compounds) I never used the last couple of mm
    of tread while with various Pirelli and Avon tyres I have no trouble
    wearing them to the edge.

    Nev..
    '04 CBR1100XX
     
    Nev.., Aug 7, 2007
    #4
  5. Yeebok

    Richard Guest

    JUst be careful for the for 50+km.

    I find that michelins are as "slippery" new as bridgestones.
     
    Richard, Aug 7, 2007
    #5
  6. Yeebok

    Nev.. Guest

    Not really. If it was dangerous it would be illegal. Just take it easy
    for the first few km, especially when going around corners/bends.
    Until you feel comfortable hooking into a corner at whatever speed you
    want without hesitation. that might be 5 mins, or 200km.
    Yes, you will see a noticeable difference between the scuffed surface
    which has been in contact with the road and the shiny unscrubbed surface.

    I find the best treatment is to find a windy bit of road and start off
    slowly around the bends and gradually go faster and faster, and as you
    lean the bike more and more you will gradually scuff up the surface over
    to the edges.

    Nev..
    '04 CBR1100XX
     
    Nev.., Aug 7, 2007
    #6
  7. Yeebok

    Toosmoky Guest

    I give 'em about a hundred k's.
     
    Toosmoky, Aug 7, 2007
    #7
  8. Yeebok

    boyds Guest

    OK Yeeb my boy.

    First thing, as others have said the tyre is covered by a substance
    that helps the rubber pop out of the mould at the factory. As you
    might expect this is slippery. There are two methods I have used to
    get through this stuff quickly.

    Method 1. The tyre people have a volatile solvent they use for
    cleaning the gunk from where the old balance weights sat. I have found
    that this solvent is good for dissolving the slippery layer on the
    tread. Just grab a rag, slop some solvent on it and scrub all around
    the tread. Oh, and do this outdoors, or your head starts to swim ;-)
    The solvent seems to have no effect on the rubber, as I regularly get
    good milage from my tyres.

    Method 2. Take a wire brush with you, and before you ride away give
    the tread a thorough but gentle going over with the wires. Breaks the
    surface of the slippery stuff and helps to wear it away quickly.

    But just in case, be a little careful for the first few kms, and try
    to avoid a heavy hand on the throttle if the roads are wet.

    SteveB
     
    boyds, Aug 7, 2007
    #8
  9. Yeebok

    Yeebok Guest

    Thanks all, much appreciated - makes a bit more sense now (esp if I
    discount a reply or two ;))
     
    Yeebok, Aug 7, 2007
    #9
  10. Yeebok

    JL Guest

    You've nailed it above. Be gentle.

    Go for a ride after you've had them fitted. Ride gently as though it
    was pissing down raining for the first few Km, point yourself towards
    a winding road with a good surface and increase your lean angle
    gradually. You want two things - firstly get them properly warmed up
    before you start giving them a hard time, then tip in to the first
    couple of corners relatively slowly by the time you've done 10Km
    you'll have them warm and clear along the middle and the first
    10degrees of lean. As a learner you are unlikely to be tipping in fast
    enough or cornering agressively enough to worry too much about it
    after that - just ride normally from then.

    The first and only time I dumped a bike from new tyres was just
    stupidity - went 25m out of the shop, pulled up at lights to turn
    right. Gave it a fistful on take off and the back stepped out. Dumb.
    Don't repeat that and you'll be fine.

    JL
     
    JL, Aug 8, 2007
    #10
  11. Yeebok

    Yeebok Guest

    OK I got 'em on - the 5K's from work isn't enough to do a run so I'll
    need to leave that for the weekend .. or lunchtime tomorrow ;)

    Now I've looked at my shiny new tyres as you do and looked at the tread
    (also, as you do). On doing so I noticed the front tyre has tread in an
    "upside down V" whereas the rear has slightly offset / & \ by
    comparison. What's odd (to me) though is that if the bike was heading
    right, the front tyre'd lay this pattern :The rear would lay the opposite :
    <<<<<<<<<<<<<<<<<<<

    Even tho I trust the shop I had to look and make sure the "this way"
    arrows were correct and they are. What I *don't* get is why the front
    and rear's treads are "opposite ways up" .. ?

    Can someone explain that ? To me it appears the front would pull water
    in towards the centre..
     
    Yeebok, Aug 8, 2007
    #11
  12. Yeebok

    Nev.. Guest

    It's not a car tyre, so you can't look at it in car tyre terms. Car
    tyres tread patterns push the water out of the centre because you always
    have the entire cross section of the tyre in the contact patch on the
    road. On the bike tyre you only have a small section of the cross
    section of the entire tyre in the contact patch on the road, the centre
    when you're going straight, the left side when you're leaning to the
    left, the right side when you're leaning right, so you want the centre
    of the tyre to push water to one side, or the other, or both, and the
    left and right sides to be pushing the water to the outside of the turn,
    which is going to be where the centre of the tyre would be if it was in
    contact with the road.

    Nev..
    '04 CBR1100XX
     
    Nev.., Aug 8, 2007
    #12
  13. Yeebok

    Yeebok Guest

    Aha ! I did wonder if it was something like that but I couldn't get my
    head around it.

    That makes perfect sense, thanks.
     
    Yeebok, Aug 8, 2007
    #13
  14. Yeebok

    Biggus..... Guest

    its called a conversation starter.
     
    Biggus....., Aug 8, 2007
    #14
  15. Yeebok

    Ivan Guest

    Whenever we collected our bikes from the Police Garage at Zetland, after new tyres were fitted, we
    were always advised to take it easy for the first 100km. You rode them at the speed limit, not
    pushing too hard in corners, then after 100km they were fine.

    Ivan
     
    Ivan, Aug 8, 2007
    #15
  16. Yeebok

    MikeH Guest

    Recall starter?
    MikeH

     
    MikeH, Aug 8, 2007
    #16
  17. Yeebok

    Biggus..... Guest

    used to fit mine...Ride the 15klms home to Kurnell, and by then they
    were well and truly scrubbed in..

    I never had an issue with new tires, but had clients that never
    listened...
     
    Biggus....., Aug 8, 2007
    #17
  18. My bloke always cleans off the mold release with brake caliper cleaner
    when he fits a tire. He doesn't like the idea that a customer will drop
    the bike before he gets home.
     
    Doctor Shifty, Aug 8, 2007
    #18
  19. Yeebok

    Nev.. Guest

    I know a dealer who takes customer's bikes for a spin around the block
    after fitting new tyres primarily to give them a bit of a scrub in and
    secondarily so that if the bike did go down on new tyres the customer
    could claim on the shop's insurance, not their own. Makes sense if
    you're not confident in your own ability to 'take it easy', but the
    downside is the shop guy may have an accident on your bike that you may
    never have had, causing you inconvenience.

    Nev..
    '04 CBR1100XX
     
    Nev.., Aug 8, 2007
    #19
  20. Yeebok

    Theo Bekkers Guest

    For about five tyres straight, it started raining whilst they were fitting
    my new tyre.

    Theo
     
    Theo Bekkers, Aug 9, 2007
    #20
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