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Recreational Cyclocross and Gravelbiking This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like :The Dirty Kanza". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

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Old 12-10-08, 09:56 AM   #1
supi
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max tire width on cross bikes

I have wheels with 700x47 tires, and was thinking of getting a used cyclocross frame for them. So my question is - can most cross frames out there take a tire this fat? I know the Surly Crosscheck can, but am not sure about the rest. Any feedback is appreciated.
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Old 12-10-08, 10:05 AM   #2
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So my question is - can most cross frames out there take a tire this fat?
No.
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Old 12-10-08, 10:55 AM   #3
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RE: flargle's negative response

So what's the biggest tire most of them can take?
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Old 12-10-08, 11:12 AM   #4
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So what's the biggest tire most of them can take?
I think a 40 is a reasonable estimate for a lot of the modern frames, especially those intended to be versatile do-it-all types. IME, purebred racing frames, especially older ones tend to be down in the 37mm range.

Perhaps we could turn this thread into a database... What tires on what rims clear which frame.

Motobecane Fantom Cross (red) clears IRC Mythos CX Slicks (700x40c) on Open Pro's in the rear, and a 700c x 44mm MutanoRaptor on OP in the front.

Voodoo Wazoo (853 w/o the sliding drops) clears the IRC's mentioned above.
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Old 12-10-08, 11:13 AM   #5
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700x47 is a pretty darned big tire. 1.85 in inches. You're in 29'er MTB territory there.

My Gary Fisher Kaitai could take them, but it's essentially a 29'er in road trim and not a cross bike.

-Roger
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Old 12-10-08, 11:48 AM   #6
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Anyone know the max tire size I could use with a Kona Major Jake? I'm using an Easton EC90X fork...John
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Old 12-10-08, 03:23 PM   #7
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San Jose clears 44's, BARELY. Makes for some fun single track rides. Jamis Nova clears 40's well. My wife's TCX just takes 35's, could fit a 38 maybe....on a dry day.

-B
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Old 12-10-08, 03:37 PM   #8
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So, you want to buy a frame around a set of tires? I think you have things backwards.
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Old 12-10-08, 03:51 PM   #9
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do you run fenders?
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Old 12-10-08, 07:38 PM   #10
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I am not even sure that a Surly could take a tire that big.
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Old 12-11-08, 10:15 AM   #11
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Yep, fenders too. I know it's sort of backwards, it's a long story, but I already have the wheels and the tires, and I wanted them big.
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Old 12-11-08, 10:18 AM   #12
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Crosscheck is going to be the best option for you to run wider tires.

If you're really hung up on tire clearance, buy a 29er and build it up cross style.
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Old 12-11-08, 12:27 PM   #13
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The singular peregrine is the only one out there that may have more clearance than the CC. Singular is now exporting to N. America, and I believe someone on this board got one.
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Old 12-11-08, 05:49 PM   #14
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Whose got a 29er built up for cross to show off here?
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I just wanted to link my Strava.
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Old 12-12-08, 06:30 AM   #15
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I recently bought the Singular Peregrine, first one in the US, to be exact



Lots of tire clearance, that's a 2.1 29er tire front and rear in that picture.

I love the monstercross idea, but I really don't have a use for one where I live--most everything has been paved. So this is becoming my tour/errands/child seat bike. It's also a bit heavy for cross (not that I've ever raced cross, but still...)

With shipping ($100), it was about $660 for the frame and fork. The exchange rate is pretty good right now.

Eric
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