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Can only fit cross tire in back. 2" up front or no?

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Can only fit cross tire in back. 2" up front or no?

Old 08-03-11, 07:44 AM
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Can only fit cross tire in back. 2" up front or no?

My Quick CX fits only a cyclocross tire in back, 35-38mm. Big knob 35's do fit fine though. This bike was my do-everything for a while but now that I have a road bike, I'm interested in optimizing for MTB trails. When I'm on the street it'll be easy rides on the bike path or neighborhood.

Most of our trails are hardpack. Being Kansas, severe climbs or ascents are uncommon. There is some mud now and then but the organized trails close, and I try not to shred nature trails.

Up front, it has a super fatty DLR80 headshok and some fellow riders have suggested that I try a 2" tire up front. I am pretty sure my rim can handle it, but I'll test fit at the LBS to be sure.

Would a 29x2 front and 35mm rear be worth doing? Any drawbacks to it, other than looking odd?
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Old 08-03-11, 09:38 AM
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It changes the geometry.
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Old 08-03-11, 10:04 AM
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Hmm, because the sidewall is taller & thus a taller tire. I could see that.

Is it enough of a change to mess things up, or negate advantages of a larger front tire at lower pressure though?
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Old 08-03-11, 04:09 PM
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People have lots of ideas about geometry. I have some curiosity. See if some friends will let you try some different sized tires. Let us know what you think about the change in geometry and fit. The tires might be hammered already or friends wouldn't have them laying around to borrow. But I would like to hear what you think of the handling and fit difference.

Yeah, I'm cheap and want to try different things on other people eqt. before I put out a few bucks.
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Old 08-03-11, 06:48 PM
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Not that it'll alter the geo too much (it will, but not crazy) but it'll steer like ass on the front of a bike like that. Run as fat as you can out back, and something like 5-10mm wider up front.
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Old 08-03-11, 06:56 PM
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Darn, that's the problem... there aren't hardly any cross/hybrid knobbies bigger than 35mm since 35 is the UCI limit.

Guess I'll keep the 35s up front.
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Old 08-03-11, 07:34 PM
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Maybe because CX mean cyclocross, so wider tires will not fit.
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Old 08-03-11, 09:40 PM
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Originally Posted by ColinL
Darn, that's the problem... there aren't hardly any cross/hybrid knobbies bigger than 35mm since 35 is the UCI limit.

Guess I'll keep the 35s up front.
They are tough to get. I bought 42s here. Took about a week to get here, $7 shipping.
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Old 08-03-11, 10:38 PM
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Originally Posted by ColinL
I'm interested in optimizing for MTB trails. When I'm on the street it'll be easy rides on the bike path or neighborhood.

Most of our trails are hardpack. Being Kansas, severe climbs or ascents are uncommon. There is some mud now and then but the organized trails close, and I try not to shred nature trails.
Conti Race King 29x2"
Hutchinson Python NG AirLight 29x2"
Kenda Karma 1.9"
Maxxis Beaver

Small Block 8s are 2.1" maybe they're crammable.

Those are some I would try.
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Old 08-04-11, 07:16 AM
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VERY helpful, thanks guys! I'll see if my LBS can order in a few of these so I can test fit. If not, I'll probably just pick the narrowest and try that.
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