Thread: 30mm vs 25mm speed and comfort differences
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Old 10-08-15 | 05:25 PM
  #6  
bikebreak
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Joined: Jun 2012
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The Continental Grand Prix 4000 S II tun BIG (most conti tires run smaller than advertised)

I measured my 25c close to 28mm wide
and 28c close to 30mm, excellent tires and about 270g each, much lighter than other 28s and 32s
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