I've had 4 flats in three rides, all rear wheel. I can't see anything in the tyre, the tyres relatively new, the rims look good. Needless to say I'm getting pretty hacked off with having to keep changing tubes. Two today on a mild 17 mile ride!
Any ideas for anything else I can check for. I've run my fingers through the tyre on every change and can't feel anything. Anything else I can do to ensure there's nothing still in it? Could it be something I'm doing when installing the tube? Anything else you guys can think of?