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Old 05-17-12, 06:37 AM   #1
silvercreek
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Is 4.5 mm enough clearance for fenders?

I've never mounted fenders on a bike. The fenders I'm considering and that are recommended for my application leaves only 4.5 mm clearance between the tire and the fender. Has anyone mounted tires with this small amount if clearance and is it a potential problem?
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Old 05-17-12, 07:04 AM   #2
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I've never mounted fenders on a bike. The fenders I'm considering and that are recommended for my application leaves only 4.5 mm clearance between the tire and the fender. Has anyone mounted tires with this small amount if clearance and is it a potential problem?
Generally around 10mm or so is recommended, which is sufficient for handling frame bounce and allowing moderately large objects to pass through the fender/tire gap without jamming. You really would not enjoy getting a stick jammed in a front fender. :-)
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Old 05-17-12, 07:18 AM   #3
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Depends on the fenders. I use roadracer guards on my road bike in winter with very tight clearances indeed. But they are light and will break away if anything gets caught in them. I wouldn't go so close with anything substantial.
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Old 05-17-12, 08:03 AM   #4
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I don't even have that much clearance between the tire and brake caliper on my road bikes.
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Old 05-17-12, 09:26 AM   #5
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I don't even have that much clearance between the tire and brake caliper on my road bikes.
Is your road bike built to mount fenders on?
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Old 05-17-12, 10:18 AM   #6
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Even a 6mm stone can jam into the space between .
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Old 05-17-12, 08:10 PM   #7
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Can you go to a skinnier tire?
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Old 05-18-12, 10:12 AM   #8
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Is your road bike built to mount fenders on?
Nah, just commenting that I run much less clearance than you'll have *with* fenders. Might not be relevant.
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