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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 07-08-04, 08:06 AM   #1
EagleEye
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Big Tires on Road Rims

What's the biggest tires I can put on my road wheel rims? Assume that I have clearance on frame and brake calibers. I have an old Trek 470 that I'd like to take on some light gravel paths with my mtn biker friends. They're riding slicks on their mtn bikes, so the paths can't too rough.

Can't afford a CX bike right now, but want to ride with my friends. I have 700x26 on the rims right now and it looks like there's clearance for bigger tires. I'm sure I can get 28's to fit easily, but I'd like to go higher if I can. Don't know if there's a difference between a CX and road rim, so not sure how big a tire the road rims will hold? Thanks.
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Old 07-08-04, 08:22 AM   #2
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I think 700x38 mm will work and be the biggest that will fit. At least that's what my LBS told me about my rims.

JOe
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Old 07-08-04, 08:53 AM   #3
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Originally Posted by joeprim
I think 700x38 mm will work and be the biggest that will fit. At least that's what my LBS told me about my rims.

JOe
Cool! Thanks! I'd like to get 700x32 on them it my frame has from for them.
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Old 07-08-04, 09:39 AM   #4
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You should have no problem with 32s. I'm running 38s on my 700c rims. There are different rim widths and mine are rather narrow (19mm).
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Old 07-08-04, 10:03 AM   #5
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You should have no problem with 32s. I'm running 38s on my 700c rims. There are different rim widths and mine are rather narrow (19mm).
Awsome! Now I just need to find some tires.
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