In my experience, cigars that do this are unevenly humidified. Many B&M cigar stores use an unregulated mist vaporizor to humidify their walk in's, making for very wet cigars. One guy's was at 85%! You buy the gar's and put them in your properly humidified humidor. Slowly, the cigars lose the extra moisture from the outside in. If you light up before it's stabilized, the moist interior expands excessively and splits the less humidified wrapper. Not to mention ruining the burn and flavor. Wet cigars tend to have a slightly sour flavor, a tight draw, and thin smoke. The cigar will also feel abnormally hot.


You also could simply have gotten a bad cigar. It happens.