Does anyone else have this problem? This has happened twice in 2 weeks. Alert on dash says tyre pressure is low. We fill with air and then the valve breaks of when removing the nozzle. The air rushes out of the tyre and goes flat. As we dont have a spare and the gunk doesnt work without a valve this is a bad problem. The garage have offered to put this right under warranty but we want a spare wheel!!! The car is less than 2 years old. Does anyone recommend buying a spare wheel or just putting standard rubber valves in and do without the intelligent bit! Thanks in anticipation.