Originally Posted by socalrider

Try using standard tubes, no lightweight tubes.. I have had good luck with Pricepoint tubes, they are cheap so stock up.. I also think it may be pinch flats.. I have used the 4 seasons and they have always been a good reliable tire.

http://www.pricepoint.com/detail/174...--Set-of-5.htm

If you need long valve, the IRC tubes have worked well for me, not lightweight but reliable..

http://www.pricepoint.com/detail/144...Valve-Tube.htm