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Old 09-11-14, 07:25 PM
  #6  
FBinNY 
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Location: New Rochelle, NY
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Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter

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The long continuous abraded line just above the rim's edge is classic for brake shoe wear. However, if the brake shoes check out, you can get similar damage if the tire is ridden under-inflated for long time.

Whatever the cause, the wear pattern isn't normal, so you need to find what's happening and deal with it, or you'll be toasting tires all the time.
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