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  1. #1
    Dane silvercreek's Avatar
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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?
    http://www.flickr.com/photos/20832064@N03/sets/

    1976 Takara Grand Touring
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  2. #2
    Senior Member mulveyr's Avatar
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    Quote Originally Posted by silvercreek View Post
    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. :-)
    Knows the weight of my bike to the nearest 10 pounds.

  3. #3
    Travelling hopefully chasm54's Avatar
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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.
    There have been many days when I haven't felt like riding, but there has never been a day when I was sorry I rode.

  4. #4
    7-speed doomsday prepper ThermionicScott's Avatar
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    I don't even have that much clearance between the tire and brake caliper on my road bikes.
    Quote Originally Posted by chandltp View Post
    There's no such thing as too far.. just lack of time
    RUSA #7498

  5. #5
    Dane silvercreek's Avatar
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    Quote Originally Posted by ThermionicScott View Post
    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?
    http://www.flickr.com/photos/20832064@N03/sets/

    1976 Takara Grand Touring
    1976 Raleigh Technium
    1976 Raleigh Sports
    1978 Schwinn Paramount P13-9
    1998 Raleigh SC30
    1954 Schwinn Jaguar
    1954 Schwinn Phantom

  6. #6
    coprolite fietsbob's Avatar
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    Even a 6mm stone can jam into the space between .

  7. #7
    Senior Member Bill Kapaun's Avatar
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    Can you go to a skinnier tire?

  8. #8
    7-speed doomsday prepper ThermionicScott's Avatar
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    Quote Originally Posted by silvercreek View Post
    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.
    Quote Originally Posted by chandltp View Post
    There's no such thing as too far.. just lack of time
    RUSA #7498

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