Understanding a The Tyre Pressure Monitoring System (TPMS)

31/08/2023 12:00AM | By Davies Craig Pty ltd

Understanding a The Tyre Pressure Monitoring System (TPMS)

Tyre pressures and tyre temperatures are two crucial aspects of vehicle safety and performance, yet they are often overlooked by many drivers. A tyre with low pressure and increased temperature leads to reduced fuel efficiency, decreased handling, and an increased risk of accidents. Fortunately, modern technology has brought us the Tyre Pressure Monitoring System (TPMS) to help us stay informed about our tyre pressure and temperature levels. Davies Craig’s TyreGuard 400 TPMS is a very economical product which can prove to be an excellent investment in both a financial and safety perspective.  

What is TPMS?

TPMS, short for Tyre Pressure Monitoring System, is an electronic system designed to monitor both air pressure and temperature inside a vehicle's tyres. It continuously measures the tyre pressure and temperature and alerts the driver if any tyre is underinflated or indeed losing pressure, which could lead to potential safety hazards. TPMS plays a vital role in promoting road safety and prolonging tyre life by ensuring proper tyre inflation and temperature.

Davies Craig’s TyreGuard 400 TPMS uses individual pressure sensors mounted on the valve stem of each tyre to directly measure tyre pressure and temperature. Each sensor sends real-time data to the compact TyreGuard Monitor located in the vehicle’s driving compartment, which then displays the information on the led screen for the driver's convenience. The TPMS provides accurate pressure and temperature readings and can detect a gradual pressure loss.


Significance of a Davies Craig TyreGuard 400 TPMS System

  1. Enhanced Safety: Correctly inflated tyres are essential for optimal vehicle handling and braking performance. TPMS alerts the driver when tyre pressure drops significantly, helping to avoid potential accidents caused by underinflated tyres.
  2. Fuel Efficiency: Maintaining the correct tyre pressure improves fuel efficiency by reducing rolling resistance. With TPMS, drivers can easily ensure their tyres are appropriately inflated, thus saving fuel and money in the long run.
  3. Extended Tyre Life: Overinflated or underinflated tyres wear prematurely and unevenly. TPMS keeps tyre pressure in check, leading to longer lasting and safer tyres.
  4. Environmental Impact: A well-maintained vehicle with proper tyre pressures emits fewer greenhouse gases and reduces its carbon footprint. TPMS indirectly contributes to a greener environment.

Benefits of a Davies Craig TyreGuard 400 TPMS System

  1. Real-time Monitoring: The TyreGuard 400 Monitor provides drivers with immediate feedback on their individual tyre pressures, allowing one to take prompt action and avoid potential tyre-related issues.
  2. Easy to Use: Once installed, the Davies Craig TyreGuard 400 TPMS is hassle-free. It automatically monitors tyre pressure and temperature, eliminating the need for manual checks.
  3. Cost Savings: By maintaining proper tyre pressure, TPMS helps save money on fuel, tyre replacements, and vehicle maintenance.

TPMS Maintenance Tips

  1. Regularly Inspect Tyres: Despite having a Davies Craig TyreGuard 400 TPMS, it's essential to inspect your tyres visually at regular intervals for any damage to tyre walls or other abnormalities.
  2. Respond to Alerts: Never ignore a TPMS warning light or alarm. If the system detects low tyre pressure or high temperature, act promptly to either inflate or repair the affected tyre(s) as required.
  3. Replace Faulty Sensors: TPMS sensors can fail over time due to battery depletion or other issues. If a Sensor malfunctions, replace the battery or unscrew the sensor and replace it.


The Davies Craig TyreGuard 400 Tyre Pressure Monitoring System (TPMS) is a vital safety feature that helps drivers maintain correct tyre pressure and stay safe on the roads. By alerting you to potential tyre issues in real-time, TyreGuard 400 TPMS ensures optimal vehicle performance, improved fuel efficiency, and longer tyre life. Embracing this technology and following regular maintenance guidelines will not only save money but also make our roads safer and the environment cleaner for everyone. Stay informed, stay safe!


TyreGuard 400 TPMS owner Mr Graham Humphries sent in the following article on his experiences with his Davies Craig TyreGuard 400 TPMS as he and his wife Judyth are travelling in outback South Australia -

“I was driving from Blinman to Arkaroola in the northern Flinders Ranges, 183 km of dirt roads. I was travelling with another car/van combination as well as my own.

The roads had been well maintained and there were signs that recent work had been done after the previous wet weather.

We were about 90 kilometers into the drive when we came across a road crew currently grading the road. Plenty of rocks and gravel were encountered during the road works. I felt relieved that we made it to the end of work without any issues, just mud across the front of the van.

Each time we came to a cattle grid I would take it very easy as many of the grids needed attention as the grid service was above the road service. On one of the rough grids, I called our companion to say slow down it is rough. At the same time my TPMS was going crazy showing that I was losing air from a right-hand rear tyre.

I was able to pullover, and sure enough the tyre was going flat. I was glad I had the Davies Craig TyreGuard 400 TPMS as it saved the tyre from being destroyed. On reaching Arkaroola the tyre was able to have a puncture repair, cost $60.00. Should I have needed a replacement tyre I would have had to wait as they did not have my size tyre in stock and the cost was $373.00 for a new tyre.

I am thankful we made the investment in a Davies Craig TyreGuard 400 TPMS. This investment has paid for itself, not only in money but time and convenience. Who would want a TPMS kit I hear some people say? Ï know immediately when my tyre is going FLAT. A huge shout out to Davies Craig for this truly great product.”