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JurekB
Son has a an 18inch wheel bike. His front tire deflated the other day.
I assumed it was punctured due to the speed of deflation.
Removed the tube, checked the tyre and rim and can find no sign of anything that could cause a puncture. Put a new tube in and inflated. This morning the tube (different brand to the original one) also deflated within minutes of its first use.
When I took out the old tube, I inflated it to pressure and it is still at pressure 2 days later. The new tube that deflated this morning also seems to have no puncture either? Its weird. What's happening?