Tyre Pressure & Fuel: Summer Savings for Aussie Drivers (2025)

As we head into the warmer months of December 2025, many Australian drivers are planning road trips and holidays. While the allure of the open road is strong, the sting of high fuel prices can quickly dampen the spirit. But did you know that something as simple as maintaining correct tyre pressure can significantly impact your fuel consumption and save you money?

The Link Between Tyre Pressure and Fuel Efficiency

Your car's tyres are the only point of contact between your vehicle and the road. When tyres are under-inflated, they create more rolling resistance. This means your engine has to work harder to maintain speed, leading to increased fuel consumption. Think of it like riding a bicycle with flat tyres – it requires considerably more effort.

Conversely, properly inflated tyres reduce rolling resistance, allowing your vehicle to glide more efficiently. This translates directly into fewer trips to the petrol station and more money in your pocket.

Summer Considerations: The Impact of Heat

Summer heat can exacerbate the effects of both under- and over-inflated tyres. Heat causes tyre pressure to increase. While a slight increase is normal, over-inflation can lead to a harsher ride, reduced grip, and increased risk of tyre damage. Under-inflation, already detrimental to fuel economy, becomes even more dangerous in the heat, increasing the risk of tyre failure due to excessive flexing and heat build-up.

Optimal Tyre Pressure: What You Need to Know

Finding the correct tyre pressure for your vehicle is crucial. Don't rely solely on the pressure stamped on the tyre sidewall. This number represents the maximum pressure, not the recommended operating pressure. The optimal pressure is typically found in one of three places:

• The driver's side doorjamb
• The vehicle's owner's manual
• Inside the fuel filler flap

Always check your tyre pressure when the tyres are cold, ideally in the morning before driving. Add 3-4 PSI (pounds per square inch) if checking after driving, to compensate for the heat build-up. Use a reliable tyre pressure gauge for accurate readings.

Actionable Tips for Fuel Savings This Summer

1. Check Tyre Pressure Regularly: Aim to check your tyre pressure at least once a month and before any long trips.
2. Inflate to Recommended Pressure: Adhere to the pressure specified on your vehicle's placard, not the maximum pressure on the tyre.
3. Consider Nitrogen Inflation: Nitrogen maintains a more stable pressure than compressed air, especially in fluctuating temperatures, potentially leading to slightly better fuel economy.
4. Drive Smoothly: Avoid harsh acceleration and braking, which can significantly increase fuel consumption.
5. Reduce Excess Weight: Remove unnecessary items from your vehicle to reduce the load on the engine.
6. Plan Your Route: Minimise unnecessary detours and traffic congestion by planning your route in advance.

Fuel Prices in December 2025: Know Your Options

Staying informed about current fuel prices is another crucial step in saving money. As of today, December 2025, fuel prices vary significantly across Australian capital cities. For example, in Sydney, Unleaded 91 is currently averaging around 198.25 cents per litre (cpl), while Premium 98 is considerably higher at 223.29 cpl, based on data from 241 stations. Brisbane motorists are seeing E10 at an average of 186.79 cpl, which could be a saving compared to Unleaded 91 at 189.56 cpl. Meanwhile, Adelaide currently boasts some of the lowest prices, with Unleaded 91 at just 173.17 cpl.

Diesel prices also show considerable variation. Canberra currently has the highest diesel prices at 202.4 cpl, while Adelaide offers the cheapest at 183.75 cpl, a difference of 10.1%. This highlights the importance of comparing prices before you fill up.

Maximise Your Savings with FuelRadar

Keeping track of fluctuating fuel prices can be time-consuming, which is where technology can help. Several tools are available to assist motorists in finding the best deals on petrol and diesel.

FuelRadar provides real-time fuel prices across Australia, empowering you to make informed decisions and save money every time you fill up. Our app allows you to quickly and easily locate the cheapest fuel near you, ensuring you're not paying more than you have to. With FuelRadar, you can see the latest prices for Unleaded 91, Premium 95, Premium 98, Diesel, E10 and more.

Whether you're in Sydney, where Premium 95 (219.18 cpl) costs 10.6% more than Unleaded 91 (198.25 cpl), or Perth, where Unleaded 91 is a relatively affordable 175.73 cpl, FuelRadar helps you find the best deals available in your area.

Download FuelRadar Today

Don't let high fuel prices put a damper on your summer adventures. By maintaining proper tyre pressure and utilising the tools available to find the cheapest fuel, you can save money and enjoy your travels. Download the FuelRadar app for iOS and Android today and start saving! Visit https://fuelradar.com.au/download-the-fuelradar-app to get started. You can also view our interactive fuel price map at https://fuelradar.com.au/map.

Drive safe and happy fuelling!