Old 07-13-18, 12:07 PM
  #23  
bicyclridr4life
Bicyclerider4life
 
Join Date: Aug 2006
Location: Florida and Idaho
Posts: 1,065

Bikes: Huffy Beach Cruisers, Miami Sun Trike, Vertical PK7, KHS Montana Summit, Giant Cypress DX, Schwinn OCC Stingray

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I had the same problem, with BOTH front and rear on a brand new 2004 Giant Cypress DX. One or both tires would blow after only 15 minutes or so, ridden or not.
Rim tape was replaced a couple times, tubes replaced several times.
I finally found the problem in 2011, after managing to put 150 miles on the bike.

Both tires (Kenda) had a small defect in the sidewall, that allowed the tube to bubble out.

A new used set of tires fixed the problem.

Try changing your tires.
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