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15C Wheelset with 33MM tire

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15C Wheelset with 33MM tire

Old 09-08-19, 09:19 AM
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ericleecw
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15C Wheelset with 33MM tire

Greetings,

I have a fulcrum 3 wheelset and its only 15C and therefore will only fit up 32MM tire per recommendation chart. Anyone here use a 33 MM cross tire with a 15C wheelset? I will be running this with tubes.

thanks
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Old 09-08-19, 11:40 AM
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It'll work. Only potential concern is "wallowing" if you use low pressures.
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Old 09-08-19, 07:38 PM
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That set up is what we used to call “totally normal.” It’s fine. The ETRTO recommendation chart everyone refers to is literally 25 years old and was never any good.
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Old 09-09-19, 05:07 AM
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Originally Posted by grolby View Post
That set up is what we used to call “totally normal.” It’s fine. The ETRTO recommendation chart everyone refers to is literally 25 years old and was never any good.
Good to know! I have an old front wheel with sun m13 rim (13mm of course) that I'll try to put into duty as a backup. Congrats on the podium, that one was unusually tough for me. When I'm on, that type of profile suits me, but not this weekend. Quad went more smoothly!
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Old 09-10-19, 05:18 AM
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Thanks for the reply. The 15C will primarily be used for CX and running at most 40 PSI with tubes. Will that still be an issue?
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Old 09-12-19, 02:42 PM
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40psi on a 33mm tire? That should work. I've ridden my tires like that, and they get a little squirmy on pavement as the tire is pinched a little.
ETRTO chart recommends 15c for up to 32mm, so you should be fine. The steering will be a little better with say a 22c, but run what ya got.
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Old 09-12-19, 02:46 PM
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Depending on how much you weigh, they may get squirmy on any off-camber stuff. But other than that, it should be fine.
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Old 09-13-19, 05:47 AM
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Thanks all. I weigh 160 lbs and right now run 40 psi using Schwalbe CX Pro which is 30mm. Coming from road it just "looks" too low.

The CX guys on my team are saying i should go 30-35 psi for better rolling resistance which seems counter intuitive since higher PSI has lower rolling resistance or tarmac at least.

So with 33mm tire can i go lower than 40 PSI?
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Old 09-13-19, 12:36 PM
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Originally Posted by ericleecw View Post
So with 33mm tire can i go lower than 40 PSI?
Only one way to find out for sure.
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