Hi mountainman..First blow out was a sunken section of sidewalk..by the time I saw it going 25mph, it was to little to late..I jumped the front wheel and when the back wheel was going to hit tried to releive the pressure on back wheel to no avail..dented the rear wheel..so I'm on top of this bidge at night on my back trying to fix the bike and the cops show up..I tell them the situation of the sunken slab of side walk, he asked me for my I.D..not my licecense and asks if I need a ride home, I reluctantly said yes.. I go by the sidewalk 2 days later to see what the he$$ I hit...and low and behold they put asphalt over the concrete sidewalk making a bridge lmao and that was state bridge not my local town...Hmmmm
anyway back to the second rear wheel blow out...just fixed the tire this morn and it looks like the tube got pinched then popped becuase the rim wasn't dented this time...but still....Heavy duty tubes/liners/kevlar/...? I need to stop having my tires get blown out at night on what seems like most bikes should go over or at least not "pop"...gee I'd hate to see if I took this bike off roading..I'd better have a dozen tubes with me and a rim! The bikes brand new. ???????? help...thanks