Tire Valve problems of the 2009 Mazda MAZDA5

Tpms sensor-valve failure: I was driving to work going about 40 mph when tpms light went on. I could not pull off immediately because of road conditions. Shortly after that I could hear the sound of a very flat tire. When I managed to pull off and check the tires, one was completely flat. Tire was too damaged to re-inflate. The relatively new tire and the tpms sensor had to be replaced.

The contact owns a 2009 Mazda Mazda 5. While attempting to add air to the rear drivers side tire the aluminum valve stem end broke due to corrosion. The vehicle was taken to the dealer where the technicians replaced the valve stem. The vehicle was repaired. The approximate failure mileage was 23,000.

Tpms sensor-valve slow leak: four new tires (pirelli p6 four seasons) installed at Mazda dealer on Jan 2011. The original tpms sensor-valves where used on the new tires. After that the tpms warning light would go on every couple of weeks. I would check the pressure in all the tires using a digital gauge which showed slightly low pressure (high 20?s psi) in one tire, the same tire each time. I would inflate the tire to the correct pressure. One reason I am reporting this is that there is a well-documented history of tpms sensor valves breaking easily when putting air in the tire. The more one has to inflate the tires the more likely the tpms sensor-values will break.