I will start with a simple statement of the facts:
- a month or so ago, I changed from winter to summer tyres on my road bike
- did a long-ish ride - no problems
- put bike in garage; noticed a few days later that front tyre was pancake flat.
- pumped up tyre; thought nothing of it; rode for a few hours with no issue
- noticed again the other day that tyre was pancake flat
- changed inner tube; rode for around 4 hrs on Wed - all OK
- as an investigation, inflated the old inner tube - it still hasn't gone down, so I suspect no puncture
- yesterday, noticed that front wheel (with new tube) was pancake flat again
- swapped wheel - but to investigate, inflated the old one fully.... still fine
- put spare wheel on (different tyre; inner tube etc); rode for a couple of hours - no issue
- left bike sitting in kitchen while I had a bath to relieve mild hypothermia
- just went to put bike away.... tyre on the new wheel is pancake flat (only an hour after it was fully inflated - and has done nothing but rest gently in the kitchen in between)!!!!!
Why, oh why, oh why?????
Series of unrelated coincidences?
Bike is somehow trying to eat its own front wheels?
Poltergeist?
Bike inhabited by evil spirit?
Something completely obvious that I haven't thought of?
Answers on a post card as usual....