The BMW 320I 2015 vehicle continues to drop tire air pressure below a safe level. The tire pressure monitoring system is disabling the driver's onboard display with a low tire warning alert. All 4 tires are dropping from 32psi to 23psi which is a safety hazard. Each time I visit the classic BMW dealership of plano, tx about the TPMS problem, tires are again topped off at 32psi. The dealership will not give me a service receipt after adding air in the tires. I was informed that I must pay $163 in order to receive a service receipt once the air is installed in the tires, or I can have the air installed in the tires free, and receive no receipt. This allows the dealership to suppress the actual number of complaints, because there is not a paper trail. I purchased 1 recommended new tire in September of 2015 from the dealership and all 4 tires were set to 32psi. Two months later in November 2015 all four tires were at 23psi. The 2015 car is only 8 months old, and the service department said 23psi is normal. I disagree with that statement. The TPMS, or the tires, or both are defective and are a safety problem. The problem occurs during driving, and making turns. The problem of severely under inflated tires is so numerous that it requires the dealership to provide a service lane only for inflating defective tires.

- Mesquite, TX, USA