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        Mysterious flat 
        
 
         Last week on my way for a ride I noticed my back tyre completely deflated
        I decided to inflate it and just see if it's not a slow puncture before I go ahead a replace the tube (wasn't in the mood that day).
 
 So from last week Thursday to today the tyre is still exactly the same as when I inflated it after the flat.
 
 Do you guys think I should change the tube anyway or can I live with the mysterious once of flat?
 
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