Well, got one. Had about 4400 km on the clock.

It was a small nail, but I didnt find it until I was all kitted up and picked my bike up to go for my morning commute.

That was on a Friday. I caught a cab to work and had a casual Friday.

The next day, after a long Friday night I had arranged to meet some people for breakfast then a ride. I just swapped the tube out with my spare.

That morning a friend who works with me was riding to work and got one. She got her tube fixed and we went for our Saturday ride.

Well the patch came off. Strangely we couldnt find any puncture repair places (they are everywhere in China), and my spare was on my bike. However one of our group found a place selling tubes and I put that in her bike.

I have found some green plastic inserts to put between the tube and tyre. I havent put them in yet, but will do so later.

I always commute with a tube, levers, spanner and pump.

z