Hmm, now this is an issue which I have never experienced before on other bikes, but the F700 is my first, and only bike with TPMS. If I don't ride it for a month I can almost guarantee the TPMS light will be flashing and the tyre pressures will have dropped. It seems to happen about twice as often for the front, as it does for the rear. I don't believe it's a tyre leak (Anakee IIs), but most likely a TPMS issue. I suspect it may even be the way the TPMS works (constantly leaking a small amount of air in order to measure the pressure) as it has had this issue from new. Any others with similar experiences, or do I have a dud?