Hi again,

Just wanted to thank everybody for all the helpful and informative answers.

Everything seems fine with the new tube and the lining doesn't show any irregularity. So I'm thinking the one that exploded must either have had a defect or was displaced when inflated the last time... I keep pressure near 85 psi because the bike rides great, w/ or w/o weight.

In any case, thanks to your help, I now have a better idea of what to look for when buying and installing wheels, tires and tubes. And I now carry a spare tube and the tools to change it when I go for long rides.

Cheers !