Tire pressure goes down quickly. I set tire pressure and within 2 days the tire pressure warning light comes on. Vehicle becomes un stable at speed and is difficult to control. I was driving and it was difficult to control the direction of the vehicle all of a sudden. My mechanic says the chrome finish on the wheels has corroded at the bead areas where the tire mounts and causes fast tire pressure loss. These are factory wheels.

- Sugar Hill, GA, USA

The contact owns a 2008 Lincoln Mkz. The contact stated that the tire pressure monitoring system indicator illuminated continuously. The vehicle was taken to an independent mechanic, who stated that all four tires exhibited low tire pressure due to the severely rusted rims. The four tires were inflated to the proper air pressure on numerous occasions; however, the failure recurred every two weeks. The rims were not replaced. The manufacturer was notified of the failure. The approximate failure mileage was 35,000.

- Hanahan, SC, USA