What Tyres Fit My Car?

Tyres. All four of them. Arguably the most important parts of your car, and yet most drivers have no idea which ones actually belong on their vehicle. You’re not alone. Tyre sizing can look like a secret code (205/55R16, anyone?), and picking the wrong ones can mess with your safety, handling and fuel efficiency.

The good news: it’s a lot simpler than it looks. This tyre size guide will walk you through how to find the right tyre size for your car, decode those mysterious sidewall numbers, and know when it’s time to get them replaced.

Why Choosing the Right Tyres Matters

Your tyres are the only part of your car actually touching the road, so getting them right matters – a lot. The correct tyre size and type affect everything from braking distances and fuel efficiency to how your car handles corners and wet roads.

Fit the wrong tyres and you could end up with uneven tread wear, compromised steering response, and a speedometer that lies to you. None of those are ideal. The right tyres keep you safe, save you money on fuel, and help your car perform the way it was designed to.

Where to Find Your Car’s Recommended Tyre Size

Before you buy anything, you need to know your car’s recommended tyre size. Here’s where to find it:

On the tyre sidewall – your current tyres will have the size printed on the side

Inside the driver’s door frame – most vehicles have a sticker here with the manufacturer’s recommended tyre specs

Inside the fuel cap – some vehicles list tyre information here

In your owner’s manual – the definitive guide to what your car needs

These sources reflect what the manufacturer recommends for your specific vehicle. Always start here before looking at any other options.

How to Read Tyre Size Numbers

Let’s decode that tyre size. Take a common example: 205/55R16 91V. Here’s what it actually means:

205 – tyre width in millimetres (the bigger the number, the wider the tyre)

55 – aspect ratio, meaning the tyre’s sidewall height is 55% of its width

R – radial construction (the standard for modern passenger vehicles)

16 – the wheel diameter in inches that the tyre is designed to fit

91 – load rating, indicating the maximum weight the tyre can safely carry

V – speed rating, indicating the maximum speed the tyre is rated for

You don’t need to memorise all of this. But understanding these basics means you won’t accidentally buy tyres that look right but aren’t, and that’s worth knowing.

Can You Use Different Tyre Sizes?

Sometimes, yes, but with caveats. In some situations, an alternative tyre size may be compatible with your vehicle, but it must stay within manufacturer guidelines. Straying too far outside those specs can affect your car’s safety systems (like ABS and traction control), throw off your speedometer readings, and change how your car handles.

If you’re considering fitting a different size, maybe for a different look, or because a specific size is unavailable, always check with a qualified tyre professional first. It’s a five-minute conversation that could save you a lot of headaches (and potentially your licence).

How to Choose the Best Tyres for Your Driving Needs

Not all tyres are created equal, and the best tyre for your car also depends on how and where you drive. A few things to consider:

Highway driving – prioritise comfort, fuel efficiency and long tread life

City driving – look for tyres with good manoeuvrability and short braking distances

Wet weather – all-season or wet-rated tyres offer better grip in rain

Off-road or 4WD – specific all-terrain tyres are designed for rougher conditions

Not sure which category you fall into? That’s exactly what the team at Midas is here for. A good mechanic will assess your vehicle, your driving habits, and recommend tyres that actually suit your situation, not just whatever’s on sale.

When to Replace Your Tyres

Tyres don’t last forever, and driving on worn-out rubber is one of the most common (and avoidable) causes of accidents on Australian roads. Look out for these warning signs:

Tread depth at or below 1.5mm – this is the legal minimum in Australia, though 3mm is when grip really starts to drop off

Cracking or bulging on the sidewall

Uneven wear across the tyre surface (can indicate alignment or pressure issues)

Vibrations or pulling to one side while driving

Your tyres are more than five years old – rubber degrades over time, even if they look fine

If you’re ticking any of those boxes, it’s time for a tyre check.

Get Expert Tyre Advice from Midas

Finding the right tyres doesn’t have to be complicated, especially when you’ve got a team of experts in your corner. At Midas, our trained mechanics can inspect your current tyres, identify the correct size and spec for your vehicle, and recommend the best options for your driving needs and budget. No guesswork, no upselling, just honest advice you can trust.

Whether you need a full tyre replacement, a routine inspection, or just a straight answer about what fits your car, book a tyre check with Midas today. Your tyres will thank you.