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Thread: Compass Chinook Pass - Actual Width?

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    Default Compass Chinook Pass - Actual Width?

    So, after learning that the 32c Compass Stampede Pass is likely to measure circa 34mm in real life and therefore won't fit on my Eriksen (which has a max of 32mm), I am now looking towards the Compass Chinook Pass Vs the Grand Bois Cypres - the latter of which I know to measure 32mm.

    Am I right to assume that the Chinook's '28c' means it'll likely be more like 29/30mm fitted?

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    Default Re: Compass Chinook Pass - Actual Width?

    Mine are/were a pretty accurate 28mm.
    For comparison, I was able to use the Chinooks on my rim brake Parlee Altum with adequate clearance.
    Same could not be said for Conti GP4000 II in 28mm-

    Quote Originally Posted by RichTheRoadie View Post
    So, after learning that the 32c Compass Stampede Pass is likely to measure circa 34mm in real life and therefore won't fit on my Eriksen (which has a max of 32mm), I am now looking towards the Compass Chinook Pass Vs the Grand Bois Cypres - the latter of which I know to measure 32mm.

    Am I right to assume that the Chinook's '28c' means it'll likely be more like 29/30mm fitted?
     

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    Default Re: Compass Chinook Pass - Actual Width?

    What rim were the Stampede Pass' mounted on that they grew to 34mm?
     

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    Default Re: Compass Chinook Pass - Actual Width?

    Quote Originally Posted by Texasbbq View Post
    What rim were the Stampede Pass' mounted on that they grew to 34mm?
    Reynolds ATR

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    Default Re: Compass Chinook Pass - Actual Width?

    Quote Originally Posted by boots2000 View Post
    Mine are/were a pretty accurate 28mm.
    For comparison, I was able to use the Chinooks on my rim brake Parlee Altum with adequate clearance.
    Thanks - that's a comparison I can relate to.

    On that basis, I might try the Grand Bois. After all, this was intended to be an exercise in trying the widest tyre that'll fit (preferably without completely blowing out the weight, which the Compass and Grand Bois both do a good job of avoiding).

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    Default Re: Compass Chinook Pass - Actual Width?

    I have standard casing Stampede Pass that are just below 32mm on 17c rims after approx 1 year - if a few extra grams can work, consider the standard casing
     

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    Default Re: Compass Chinook Pass - Actual Width?

    Quote Originally Posted by Andy340 View Post
    I have standard casing Stampede Pass that are just below 32mm on 17c rims
    Hmmm, that's interesting...

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    Default Re: Compass Chinook Pass - Actual Width?

    The 28c Compass tire, mounted to a Hed Belgium (not +), measured out just about 28mm exactly. It was narrower than the 25c Michelin that preceded it.
     

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    Default Re: Compass Chinook Pass - Actual Width?

    A couple more data points:
    Chinook Pass 28 on 17mm Mavic = 27.7mm
    Gran Bois 28 on 17.5mm Belgium = 27.9mm
     

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    Default Re: Compass Chinook Pass - Actual Width?

    Thanks - much appreciated.

    Grand Bois Cypres arriving tomorrow - will see how they measure up. They were a whole tyre cheaper than the Stampede or Chinook, so I decided to take the 40g hit on weight and go with them. I loved the 26c Blue Cerf, so hopefully these are a success too.

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    Default Re: Compass Chinook Pass - Actual Width?

    Quote Originally Posted by The Bridge Guy View Post
    A couple more data points:
    Chinook Pass 28 on 17mm Mavic = 27.7mm
    Gran Bois 28 on 17.5mm Belgium = 27.9mm
    This is interesting because my Gran Bois 28's on HED Belgium 17.5mm internal rims measure 30mm all day. Mine are the regular casings, non-extralight can't remember blue or green.
     

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    Default Re: Compass Chinook Pass - Actual Width?

    Quote Originally Posted by Texasbbq View Post
    This is interesting because my Gran Bois 28's on HED Belgium 17.5mm internal rims measure 30mm all day. Mine are the regular casings, non-extralight can't remember blue or green.
    Grand Bois only come with one casing option (it's the Compass that have 2 options); and the 28c tyre is the Green Cerf (blue is the 26c).

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    Default Re: Compass Chinook Pass - Actual Width?

    Pretty sure there was an Extra Leger casing offered in 28mm. But, hell it doesn't matter anymore. Where are you finding Grand Bois for sale?
     

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    Default Re: Compass Chinook Pass - Actual Width?

    Quote Originally Posted by Texasbbq View Post
    Pretty sure there was an Extra Leger casing offered in 28mm. But, hell it doesn't matter anymore. Where are you finding Grand Bois for sale?
    I stand corrected - I think you might be right on the 'Extra Leger' versions.

    There's a couple of places over here (well, in Melbourne) who are stocking Grand Bois. No idea where they're getting them from - although I wouldn't be surprised if one of the suppliers is getting them direct from Japan.

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    Default Re: Compass Chinook Pass - Actual Width?

    My Grand Bois Cerf Vert (28mm nominal) in Extra Leger measure 30mm on 18c rims.
     

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    Default Re: Compass Chinook Pass - Actual Width?

    Its true, things are bigger in Texas! But hey, were talking about things molded out of rubber, not machined from billet. Production variance likely in both the tires, rims and inflation pressures.
     

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    Default Re: Compass Chinook Pass - Actual Width?

    This has all been very interesting - not least because the Corima wheels and Grand Bois Cypres are now here and mounted; and the width I measure with my callipers is 30.1mm (at 60psi - for reference, it's a 26mm wide rim [I'm not sure of the internal rim width]). So for me, the Cypres are very true to their 30c designation.

    Regardless, I still don't think the Stampede Pass would be a wise move as the clearance in the chain stays with these is already getting tight, as it was with the Challenge P-Rs (which measured 30.4mm)

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    Default Re: Compass Chinook Pass - Actual Width?

    Quote Originally Posted by RichTheRoadie View Post
    This has all been very interesting - not least because the Corima wheels and Grand Bois Cypres are now here and mounted; and the width I measure with my callipers is 30.1mm (at 60psi - for reference, it's a 26mm wide rim [I'm not sure of the internal rim width]). So for me, the Cypres are very true to their 30c designation.

    Regardless, I still don't think the Stampede Pass would be a wise move as the clearance in the chain stays with these is already getting tight, as it was with the Challenge P-Rs (which measured 30.4mm)
    Just an FYI, my 4 year old Cypreses, that I'm still trying to kill after ~3500 miles, measure ~33.5mm on TB-14s (23mm o-o) and ~34.5mm on HED+ (25mm o-o). In their youth (OK, when new) they measured 31mm on the TB-14s, so they grow a lot.
     

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    Default Re: Compass Chinook Pass - Actual Width?

    Quote Originally Posted by donevwil View Post
    <snip> ...they grow a lot.
    And that's also worth knowing and keeping an eye on - thanks!

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    Default Re: Compass Chinook Pass - Actual Width?

    Here in Texas, they'd be plus' by now!
     

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