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why bigger tires?

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Mountain Bikes
Published
11 July 2004
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12 July 2004
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Pas
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  1. educate me, discuss or call me an idiot, doesn't matter ;-)

    What's the deal with different tire sizes? Tuff grrl keeps
    telling I should go bigger, but being the weight weenie and
    cheapskate I am, I "just say no". Is there a reason an XC
    rider would want bigger tires? More traction, more
    stability? I always figured bigger tires were for primarily
    big hit/DH riders. Do bigger tires contribute more to trail
    erosion, or only if skidded?

    care to elaborate, any one?

    penny

  2. pas said:

    educate me, discuss or call me an idiot, doesn't
    matter ;-)

    What's the deal with different tire sizes? Tuff grrl keeps
    telling I should go bigger, but being the weight weenie
    and cheapskate I am, I "just say no". Is there a reason an
    XC rider would want bigger tires? More traction, more
    stability? I always figured bigger tires were for
    primarily big hit/DH riders. Do bigger tires contribute
    more to trail erosion, or only if skidded?

    care to elaborate, any one?

    penny

    What size tires do you use now?

    --
    - Zilla Cary, NC (Remove XSPAM)

  3. Quoted message said:

    care to elaborate, any one?

    You get more rubber on the ground, in technical sections
    where you depend on friction you simply have more of it,
    e.g., rockgardens. On lose muddy trails you sink down
    less. Going on wooden plank bridges lowdin.nuLUNSEN
    filer/lunsenled11e.JPG wide tires makes it less likely
    that you slip between the planks and get stuck with your
    wheel. We have a lot of those where we ride in Sweden so
    we always use
    2.1" tires. lowdin.nuLUNSEN
    filer/lunsenl3c.jpg lowdin.nuLUNSEN
    filer/lunsenl28.jpg

    Per

  4. pas said:

    educate me, discuss or call me an idiot, doesn't
    matter ;-)

    What's the deal with different tire sizes? Tuff grrl keeps
    telling I should go bigger, but being the weight weenie
    and cheapskate I am, I "just say no". Is there a reason an
    XC rider would want bigger tires? More traction, more
    stability? I always figured bigger tires were for
    primarily big hit/DH riders. Do bigger tires contribute
    more to trail erosion, or only if skidded?

    care to elaborate, any one?

    penny


    They're definitely not only for big hit or DH. As Per
    already explained, more contact area, which is great not
    only going DH over rougher terrain , but climbing up techy
    stuff too. They just roll over stuff easier.

    Of course the downside is the weight. Also, more importantly
    than size is the tread and sidewall stiffness. Give me a
    narrower, stiff side walled, good knobby designed tire over
    a wide flexy, crappy tread one any day.

    --
    Slacker

  5. Quoted message said:

    Of course the downside is the weight. Also, more
    importantly than size is the tread and sidewall stiffness.
    Give me a narrower, stiff side walled, good knobby
    designed tire over a wide flexy, crappy tread one any day.

    Pliable sidewalls = less rolling resistance.

    Here we go...

    --
    Phil, Squid-in-Training

  6. ZeeExSixAre said:
    Quoted message said:

    Of course the downside is the weight. Also, more
    importantly than size is the tread and sidewall stiffness.
    Give me a narrower, stiff side walled, good knobby
    designed tire over a wide flexy, crappy tread one any day.

    Pliable sidewalls = less rolling resistance.

    Here we go...


    Stiff sidewalls = better handling

    Who cares about rolling resistance if they fold on you?

    Slacker - off to the races ;-)

  7. Zilla said:
    pas said:

    educate me, discuss or call me an idiot, doesn't
    matter ;-)

    What's the deal with different tire sizes? Tuff grrl
    keeps telling I should go bigger, but being the weight
    weenie and cheapskate I am, I "just say no". Is there a
    reason an XC rider would want bigger tires? More
    traction, more stability? I always figured bigger tires
    were for primarily big hit/DH riders. Do bigger tires
    contribute more to trail erosion, or only if skidded?

    care to elaborate, any one?

    penny

    What size tires do you use now?

    2.10

  8. Quoted message said:

    Zilla wrote:

    Quoted message said:
    Quoted message said:


    What size tires do you use now?

    pas wrote:

    2.10

    IRC serac on the front, Michelin Hot S on the back. I guess
    I haven't been paying much attention to tires. I've been
    gifted with lots of new ones (thanks you know who you
    are...) and so for what I've noticed about tires is, "worn"
    or "new". I've experimenting with less tire pressure, and
    boy does that sure change the ride from #40 psi. Maybe I
    should pay more attention to tire type/size/tread?

    penny

  9. I vote for wide large volume tires. But I do weigh 220lbs
    and don't speed much time worrying about my bikes weight.
    Fixing flats and bike repairs on the trail are more of a
    priority. Current bike about 30lbs.

    I used Panaracer XC Pro 2.1 for a my first year riding and
    they seemed to work good for So-Cal riding.

    When a brought my 5-spot, 18 months ago, I started with 2.35
    IRC Trailbears. I could run them at low pressure (28-30lbs)
    and not get pinch flats. They are slow on the flats, but
    climb well and feel good downhill.

    I am now running a 2.5 WTB Weirwolf Race on the front and a
    2.5 IRC Trailbear on the rear...28lbs in front, 30lbs in
    back. In my experience descending steep loose stuff is not
    as scary with wide tires and low pressure, they don't break
    loose as easy in heavy braking.

    Was up in Big Bear, CA. today and caught the sleeve of my
    jersey on a branch. Pulled my handlebars to the right in
    very sandy trail and when over the bars, landing on the back
    of my head and left shoulder. My riding buddy could hear my
    helmet cracking and it was so noticeable that I was
    conscience of the noise even before coming to a stop. For
    me, when things go wrong it happen so fast that it feels
    like a blackout. I have been OTB about 5-6 times and each
    time I have avoided face plant by rolling with it. I have
    engrain in my head not to put my hands to stop the fall.
    This was the first OTB on flat ground, all others were
    downhill and not having my weight back.

    "pas" <[email hidden]> wrote in message
    "]news:[email hidden]...

    Quoted message said:

    educate me, discuss or call me an idiot, doesn't
    matter ;-)

    What's the deal with different tire sizes? Tuff grrl keeps
    telling I


    should

    Quoted message said:

    go bigger, but being the weight weenie and cheapskate I
    am, I "just say


    no".

    Quoted message said:

    Is there a reason an XC rider would want bigger tires?
    More traction, more stability? I always figured bigger
    tires were for primarily big hit/DH riders. Do bigger
    tires contribute more to trail erosion, or only if
    skidded?

    care to elaborate, any one?

    penny

  10. pas said:

    educate me, discuss or call me an idiot, doesn't
    matter ;-)

    What's the deal with different tire sizes? Tuff grrl keeps
    telling I should go bigger, but being the weight weenie
    and cheapskate I am, I "just say no". Is there a reason an
    XC rider would want bigger tires? More traction, more
    stability? I always figured bigger tires were for
    primarily big hit/DH riders. Do bigger tires contribute
    more to trail erosion, or only if skidded?

    care to elaborate, any one?

    Bigger tyre pros: more cushioning, increased grip Bigger
    tyre cons: increased rolling resistance, increased weight

    You already ride a full bouncer, so the cushioning benefits
    are pretty much negated right there. It's therefore a trade-
    off between increased grip against increased rolling weight
    and rolling resistance.

    My personal opinion is that grip is far more influenced by
    body position and proper weighting than tyre properties. I
    view the odd section where I have to get off and hike as an
    acceptable trade off to being able to ride longer and with
    less effort. YMMV, depending on the terrain and type of
    riding you do.

  11. "pas" <[email hidden]> wrote in message news:<[email hidden]>...

    Quoted message said:

    educate me, discuss or call me an idiot, doesn't
    matter ;-)

    What's the deal with different tire sizes? Tuff grrl keeps
    telling I should go bigger, but being the weight weenie
    and cheapskate I am, I "just say no". Is there a reason an
    XC rider would want bigger tires? More traction, more
    stability? I always figured bigger tires were for
    primarily big hit/DH riders. Do bigger tires contribute
    more to trail erosion, or only if skidded?

    care to elaborate, any one?

    penny

    I suspect there is no definitive answer and it's all down to
    personal preferences.

    After experimenting with a number of set-ups, I've settled
    for Panaracer Trail Blasters (sometimes Fire XCs) 1.8s front
    and back at
    50/55 psi. Yes, the ride can be as hard as hell but I find
    the handling more stable/predictable on this set up than
    the wider tyres and/or lower pressures alternatives. I
    ride mainly on hard pack (or at least it was before the
    onset of the British summer) and mud (the current summer
    conditions). If I did a lot of rocks or roots then it
    might be different.

    I also have a number of trails within 4 miles of home so I
    ride on-road to my normal off-road trails which I'll admit
    encourages me to put up with the high pressures.

    Joe

  12. pas said:

    educate me, discuss or call me an idiot, doesn't
    matter ;-)

    What's the deal with different tire sizes? Tuff grrl keeps
    telling I should go bigger, but being the weight weenie
    and cheapskate I am, I "just say no". Is there a reason an
    XC rider would want bigger tires? More traction, more
    stability? I always figured bigger tires were for
    primarily big hit/DH riders. Do bigger tires contribute
    more to trail erosion, or only if skidded?

    care to elaborate, any one?

    penny

    I'd keep going on your current tires until you need new ones
    and then reevaluate. I have Specialized Enduro Pro 2.2's on
    the SS and Intense System 4 2.25's on my Epic, but those
    Intense tires are huge for their labeled size, and are more
    like 2.3 or even 2.4's.

    I'll probably go a little smaller on my next set for the
    Epic, but the grip of the Intense tires is really, really
    good. They are a bit heavy and I think I'd probably just get
    the 2.2 Enduros for that bike as well the next time around.

    One more benefit of larger tires (if running tubes) is less
    likelyhood of a pinch flat.

    In the end it's all about preference, you idiot. 😉

    Matt

  13. It is a control factor, especially in loose and/or technical
    sections. More tire contact = better cornering, better
    braking and better high-freq bump absorption. They may not
    roll as well, but the trade-off is well worth it to me for
    the kind of riding I mostly do. Experiment a bit. Buy a WTB
    Motorpator 2.4 and put it on the front only, ride some
    technical stuff that requires a lot of front brake and see
    the difference. A few of my friends run a 2.4 up front and a
    2.3-2.1 in back and have great success with that combo. I
    prefer the control of the 2.4 Moto in both front and back.
    If I'm riding hardpack, I pump them up over 40 psi so they
    don't "roll" off of the rim in hard cornering.

    JD

  14. "pas" <[email hidden]> wrote in message
    "]news:[email hidden]...

    Quoted message said:

    educate me, discuss or call me an idiot, doesn't
    matter ;-)

    What's the deal with different tire sizes? Tuff grrl keeps
    telling I


    should

    Quoted message said:

    go bigger, but being the weight weenie and cheapskate I
    am, I "just say


    no".

    Quoted message said:

    Is there a reason an XC rider would want bigger tires?
    More traction, more stability? I always figured bigger
    tires were for primarily big hit/DH riders. Do bigger
    tires contribute more to trail erosion, or only if
    skidded?

    care to elaborate, any one?

    penny

    Cheaper way of getting more suspension. Especially the
    front. I like running big non DH 2.5 tires in the front. I
    normally run smaller tires in the back.

  15. pas said:
    Zilla said:
    pas said:

    educate me, discuss or call me an idiot, doesn't
    matter ;-)

    What's the deal with different tire sizes? Tuff grrl
    keeps telling I should go bigger, but being the weight
    weenie and cheapskate I am, I "just say no". Is there a
    reason an XC rider would want bigger tires? More
    traction, more stability? I always figured bigger tires
    were for primarily big hit/DH riders. Do bigger tires
    contribute more to trail erosion, or only if skidded?

    care to elaborate, any one?

    penny

    What size tires do you use now?

    2.10

    For XC riding, my 2.10s (IRC Mythos, and Jones XC) do
    fine at 35psi.

    --
    - Zilla Cary, NC (Remove XSPAM)

  16. In article <[email hidden]>,
    [email hidden] says...

    Quoted message said:


    Quoted message said:

    Zilla wrote:

    Quoted message said:
    Quoted message said:


    What size tires do you use now?

    pas wrote:

    2.10

    IRC serac on the front, Michelin Hot S on the back. I
    guess I haven't been paying much attention to tires. I've
    been gifted with lots of new ones (thanks you know who you
    are...) and so for what I've noticed about tires is,
    "worn" or "new". I've experimenting with less tire
    pressure, and boy does that sure change the ride from #40
    psi. Maybe I should pay more attention to tire
    type/size/tread?

    penny

    A 2.1 Hot S is like a 2.2 or 2.3 in most other tires, it
    won't even fit on the back of mine even though a Michelin
    Wildgripper XLS 2.1 fits with lots of clearance. So if you
    go any bigger you are going to have to get more tattoos and
    piercings and call yourself missy.
    --
    _________________________
    Chris Phillipo - Cape Breton, Nova Scotia ramsays-ramsays-
    online.com

  17. Slacker said:
    ZeeExSixAre said:
    Quoted message said:

    Of course the downside is the weight. Also, more
    importantly than size is the tread and sidewall
    stiffness. Give me a narrower, stiff side walled, good
    knobby designed tire over a wide flexy, crappy tread one
    any day.

    Pliable sidewalls = less rolling resistance.

    Here we go...


    Stiff sidewalls = better handling

    Who cares about rolling resistance if they fold on you?

    Slacker - off to the races ;-)

    Supple sidewalls = better traction and smoother ride

    miles

  18. "JD" <[email hidden]> wrote in message
    "]news:[email hidden]...

    Quoted message said:

    It is a control factor, especially in loose and/or
    technical sections. More tire contact = better cornering,
    better braking and better high-freq bump absorption. They
    may not roll as well, but the trade-off is well worth it
    to me for the kind of riding I mostly do. Experiment a
    bit. Buy a WTB Motorpator 2.4 and put it on the front
    only, ride some technical stuff that requires a lot of
    front brake and see the difference. A few of my friends
    run a 2.4 up front and a 2.3-2.1 in back and have great
    success with that combo. I prefer the control of the 2.4
    Moto in both front and back. If I'm riding hardpack, I
    pump them up over 40 psi so they don't "roll" off of the
    rim in hard cornering.

    JD

    Yeah, what he said. I'm one of those guys he put a 2.4 on
    the front of the red geared bike, that didn't quite fit on
    the SS last year, and I love it. The 2.4 MR almost never
    breaks loose. Especially steep descents, my front almost
    never locks up, and it's nice to be able to use the front
    brake for control whilst my hinder parts are being polished
    by the rear tire. Cornering, etc. etc. all proves out.

    Paladin

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