Up early for me this morning so I decided to go for a ride at about 9:30
got my bike out and it felt funny wheeling it out of the shed
Yup - flat back tyre
gave the tyre a good looking at and found a small hole/slit with a sharp stone in it
CLEARLY that was the problem - no other signs of anything
so I took the inner tube out and blew it up then left it while I had a cuppa
all was fine - stayed inflated - so I assumed that the goo inside has self sealed it and now that the stone was out it wouldn;t automatically get re-opened again
so I put it all back together and blew it up to full pressure
I had other things to do so I decided to go to some DIY shops and get 'stuff' mainly trunking for the wires from some new solar powered outside lights.
got back and the damn tyre was flat again
in fact even flatter!
so I did it properly - bucket of water and all that - and found a teeny tiny thorn hole - took a while to get the damn thing out of the tyre
looking at the tread it is probabluy more susceptible now due to thinner rubber as the tyre has got worn down a bit