Simply, remove the dust cap on the tyre valve and place the head of the digital tyre pressure gauge over the tyre valve, pressing firmly. Only drawback i would say is that, whilst it has a soft feel about it,so it is comfortable to use, i noticed, that because of it's colour and texture it appeared to get dirty quite quickly. Well, ensuring your tyres have the optimal amount of air inside improves the efficiency with which they rotate, improving your economy and saving you money in fuel.

Plus, you can switch to pressure readouts more suitable to a lorry or bike and it has a really high range for pressure readouts. If you can't find them here then the pressures will be displayed on the tyre's sidewall, in the fuel filler cap or even in the sill of the driver's door. Properly inflated tyres also ensure that your vehicle's steering remains responsive and its braking effective. Despite being more accurate than an analogue device, digital tyre pressure gauges need batteries to function. Or if you are using an analogue gauge, you can use the built-in deflator button to bring the pressure to the correct amount.

This nifty digital tyre pressure gauge provides tyre pressure reading in PSI and BAR with blue back-lit LCD display. Fuel efficiency is at the heart of Hyundai’s new small SUV, but does it have enough strings in its bow to beat the five-star Volkswagen T-Roc? When it eventually dies I shall be taking it apart to see whether it can be done as I work in the electronics industry, but I think this lets the product down. Our only gripe is that the dial is a little harder to read than some others, even in good light, but at least it glows in the dark.

There are a range of tyre pressure gauges that come in various shapes and forms, from analogue to digital, and keyring-sized to glovebox-sized. You can check tyre pressures at a petrol station using an air compressor, but using a tyre pressure gauge is both quicker and easier and can be done at home or at the roadside. The 45-degree connector stuck to our tyre valves with no hassle, even if the shorter, solid neck of the gauge makes it a bit trickier to attach than the Draper, above.

To use, the pressure gauge must be placed firmly over the tyre valve, once the 'On' button is pressed the gauge must be held on the valve until the reading is displayed.