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 Model TPMS-201-D Display Unit




Model TPMS-222 Display Unit




Introduction to TPMS
(Tyre Pressure Monitoring Systems)

Tyre Pressure Monitoring Systems inform the driver of tyre pressure and temperature in real time while the vehicle is parked or being driven. Systems generally consist of sensors with a Radio Frequency (RF) transmitter fitted to each tyre and a receiver/display unit fitted to the dash of the car to display information and alert the driver of any problems.

TPMS provide a number of significant advantages for modern motoring.

1) Safety The USA National Highway Traffic Safety Administration as well as European (EU) and Australian Road Safety organisations, have identified that tyre pressure and tyre failure is a significant factor in vehicle accidents. Low tyre pressure will lead to premature tyre failure. It has been found that most drivers do not check tyre pressures at sufficiently regular intervals and as a result an unacceptable number of vehicles are being driven on the road with under-inflated tyres.

A report prepared by Road Safety Solutions for the "Heads of compulsory Third Party insurance in Australia and New Zealand" in 2007 looked at studies carried out in the UK and USA which found that the number of vehicles on the roads, to have at least one tyre under inflated, to be as high as 72%. The report looked at the 1993 NRMA studies in Australia that found only 17% of tyres to be correctly inflated. It goes into detailed analyses of the "Safety Consequences of Under-Inflated Tyres".

Even without such studies it is easy to see that an under-inflated tyre will result in reduced vehicle handling, increased braking distance and increased likelihood of a blowout.

2) The Environment Under-inflated tyres have a detrimental environmental effect. Under-inflated tyres cause an increase in wheel roll friction. This increases vehicle fuel consumption. The increase in friction also contributes to increased tyre wear that is also detrimental to the environment.

This is not an unsubstantiated statement made merely to benefit our cause. Tyre pressure is so detrimental to safety and CO2 emission that the US congress has passed legislation that mandates that all passenger cars, trucks, multipurpose vehicles, buses with gross vehicle rating of 10,000 pounds or less (except with dual wheels on an axle) must have Tyre Pressure Monitoring Systems fitted to all vehicles manufactured or sold within the USA after September 1, 2007.

3) Cost Saving A TPMS over the life of a tyre will save you money. A TPMS will save you money in three ways:

  • Firstly, by instantly advising the drive of the current tyre pressure, the driver will be readily able to adjust the tyre pressure to the correct tyre plaque pressure and reduce the vehicle fuel consumption caused by under-inflated tyres.
  • Secondly, by running the tyres at the correct pressure the life of the tyres will be increased. The study shows that an average tyre life span of 70,000 km could be increased to 76,850 km with a TPMS.
  • Thirdly, slow tyre leaks can be hard to detect. If the leak occurs while driving, often it is only detected when it is too late. Modern low profile performance tyres and "run flat tyres" present an even bigger problem. Visual inspection of these tyres is not sufficient to determine that the tyre may be vastly under inflated. If a leak occurs, the problem is more often than not only detected when the tyre starts to disintegrate while driving. At this point the tyre will not be salvageable. A TPMS will report and alert the driver, in real time, that the tyre pressure is either going down slowly or has gone below a defined lower limit. This will ensure that a slow leak, or a leak that commenced while driving will be detected before the tyre is damaged beyond repair. Considering most performance tyres are expensive, a TPMS makes economic sense as the possibility of a leak over the life of the tyre is substantial.


A TPMS system fitted to your vehicle will increase the safety of that vehicle, and hence that of the driver and passengers, while at the same time bring environmental benefits to the world we live in. Over the life of the tyres and the vehicle, a TMPS will in most cases pay for itself and then return a profit on your investment.

Click here to find out why our INAWISE TPMS systems are better than the rest.














Benefits of the














TPMS Sensor / Transmitter







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