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Ensuring Safe Tyres and Optimal Tread Depth for Australian Roads

Driving safety is paramount on Australian roads, where diverse terrains and varying weather conditions can present significant challenges to motorists. One crucial aspect of road safety that often goes overlooked is the condition of tyres and their tread depth. In this blog post, we'll delve into the importance of safe tyres and maintaining optimal tread depth for safe driving in Australia.

Having less tread than required on your car is not just illegal, its unsafe!

How Much Tyre Tread Should My Car Have?

In Australia, there are legal requirements regarding tyre tread depth to ensure road safety. According to the Australian Design Rule (ADR), the minimum legal tread depth for passenger vehicles, including cars and light trucks, is 1.5 millimeters across the central three-quarters of the tyre's width. However, it's important to note that while this is the legal minimum, it may not be sufficient for optimal safety, especially in adverse weather conditions.

The minimum amount of tread, which provides a secure grip, is around 3.5mm - about the depth of a match-head.
In wet conditions, 3.0mm or less means that your traction and stopping power is greatly reduced
When driving in snow, traction can be compromised at 4.75mm tread depth.

Understanding Tyre Tread

Tyre tread refers to the grooves on the surface of a tyre that provide traction and grip on the road. As tyres wear down over time, the tread depth decreases, compromising their ability to maintain traction, especially in wet or slippery conditions. In Australia, where heavy rainfall and unpredictable weather are common, adequate tyre tread is essential for safe driving.

The Importance of Safe Tyres

Maintaining safe tyres is not only a legal requirement but also a crucial aspect of ensuring your safety and the safety of others on the road. Adequate tyre tread depth improves traction, reducing the risk of skidding or hydroplaning, particularly on wet or slippery surfaces. It also enhances braking performance, allowing you to stop safely in emergency situations.

Regular Inspections and Maintenance

To ensure your tyres remain safe for driving, it's essential to conduct regular inspections and maintenance. Check your tyre tread depth regularly using a tread depth gauge or the simple '20 cent coin test'. Simply insert a 20 cent coin into the tread grooves; if you can see the outer band of the coin, it's time to replace your tyres.

Additionally, inspect your tyres for signs of wear, such as cracks, bulges, or uneven wear patterns. Proper inflation is also crucial for tyre safety, as underinflated or overinflated tyres can affect handling and increase the risk of blowouts.

Choosing the Right Tyres

When replacing tyres, it's essential to choose the right ones for your vehicle and driving conditions. Your local Repco Authorised Service will be able to advise you on the most suitable tyres with adequate tread patterns and compounds suitable for your location and driving habits.


Safe tyres and optimal tread depth are paramount for safe driving on Australian roads. By understanding the importance of tyre tread, adhering to legal requirements, and conducting regular inspections and maintenance, motorists can help ensure their safety and the safety of others on the road. Remember, investing in safe tyres is an investment in your safety and peace of mind while driving.

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