Tyres are one of the most important parts of your car. They’re what stop you scraping along the tarmac when you brake, they keep your car on the road and they allow you to accelerate quickly. But did you know that there’s a whole lot more to tyres than just those things? Tyre sizes and types are an important factor in how well your car performs, especially if it’s a performance vehicle (or if it has been modified for extra power or torque).

It could even be something as simple as replacing worn out brake pads that causes problems with your tyre size not being correct – so here’s what we’ll cover:

The first two numbers represent the width of your tyre, in millimetres. A 25-inch (1 metre) tyre size is equivalent to a 38-millimetre aspect ratio and a rim diameter of 19 inches. The third number is the aspect ratio, which is the height of your tyre as a percentage of its width. The fourth number represents the rim diameter, measured in inches.

The final letter indicates what type of vehicle it’s meant for: P stands for passenger vehicles; T means light trucks (such as minivans, SUVs or pickups); LT refers to light trucks with higher load ratings than standard ones

How to convert tyre numbers?

If you are looking to replace your tyres and have been told that the size on the sidewall of your existing tyres is 205/55 R16, how do you find out what this means?

By knowing how to convert tyre numbers from the technical jargon into plain English, we can easily translate this particular example into a basic understanding. The first number refers to the width of tyre and in this case it is 205mm wide.

The second number refers to the aspect ratio or profile height (proportion) which in this case is 55%, meaning that 55% of its width sits above its centre line.

So if we divide our answer by 100, we get an accurate approximation for what each number represents: For example if our calculation gives us 50%, then 50% would be our aspect ratio; if 80%, then 80% would be our aspect ratio; etc..

The first thing to understand is that tyre sizes are not universal. They can vary from one country to another, and even between manufacturers. It’s important that you get the right size for your car so that the tyres will be compatible with your vehicle.

When it comes to choosing a new set of tyres, there are several factors you’ll need to consider:

What type of weather do you drive in most often? This will inform what kind of tread pattern is best for your needs (summer tyres work better on dry roads; winter tires have deeper grooves and offer better traction when it’s wet). You should also consider how much money you’re willing to spend on new rubber every year.

If this is an issue for your budget, then all-season models might be more affordable options than full-time seasonal tyres.* Are these going on an SUV or truck? If so then think about whether these heavy vehicles have enough clearance under them for wider wheels—you may need aftermarket components like spacers or rims instead.* Do any members of your family suffer from allergies because they live near farms where there are lots pesticides used? Then go with organic materials instead such as bioplastics made from cornstarch!

How do I find the right tyre size for my car and how often should I change them?

To find the right tyre size for your car, visit the manufacturer’s website. You’ll also need to know what kind of vehicle you have and whether it has an all-wheel drive (AWD) system.

After you’ve found the correct tyre size for your car, you should replace them every six to eight years. This is because tyres lose their tread over time, which makes them unsafe to use on the road. You can check if your tyres are beyond the point of replacement by looking at the tread depth – this is usually indicated by a series of numbers and letters on either side of each tyre’s sidewall (the part that faces away from the wheel).

The number indicates how deep into its total life cycle a particular tire is at present; 3mm means that there are three millimetres left before it needs replacing. If there’s less than that left, it’s time to get new ones fitted!

Tyre replacement can be a bit of a mystery. It’s not something we have much day-to-day experience with, but it’s vital to our safety on the road that car tyres are always in good working order.

Tyre replacement can be a bit of a mystery. It’s not something we have much day-to-day experience with, but it’s vital to our safety on the road that car tyres are always in good working order. Tyres are the only contact point between your car and the road, so it makes sense that they play a major part in your car’s safety. These rubber bands can wear out over time, or even be damaged by debris on the road or other hazards such as potholes and rocks; either way, they’re not doing their job properly any more.

If you want to ensure your tyres are safe for driving then there are two things you should do: check their tread depth and check their age. The easiest way to check either is by simply looking at them!

If you want to find out more about tyre sizes, please get in touch with us! We’re always happy to help you make the right choice.