Tire Monitoring System: Description and Operation

Tire Pressure Monitoring System (RDK)

For the first time, a tire pressure monitoring system (RDK) is available as an option (I no.) on the Boxster/S.

The RDK offers a significant improvement in safety by continuously monitoring the air pressure of each tire. The system gives the driver an early warning of a pressure deficiency within the tire, creeping (normal reduction in pressure caused by diffusion) or even sudden pressure loss in the tires. A tire blowout can therefore be prevented. It also does away with the need for regular air pressure checks at the service station. A another advantage is that having the correct air pressure cuts down on tire wear (a deficiency in pressure of 4.6 psi (0.3 bar) can reduce the service life of tires by up to 25%). A deficiency in pressure also results in increased fuel consumption.

Design

The tire pressure monitoring system comprises the following components:
- 4 wheel transmitters
- 4 digital antennas
- RDK control module