I went riding last thursday w/ gregg,chris and 5 other guys and had a flat quite aways in the woods, so gregg saved the day and gave me a tube. I picked up 2 tubes 1 for gregg and a spare. I showed up to go riding with the c-group tonight at Hole in the Fence met up with gregg gave him the tube i owed him and didnt realize i forgot the other one at home. Well about a 1/2 mile into the trip i had another flat in the rear tire again. I walk the bike back out of the woods and both my passenger side tires are flat. I'm I the only one this kind of bad luck happens to.