Tyre calculator
Our wide and varied range of car tyres is constantly being updated with new tyre models, both with improved performance and grip on dry, wet, or damp roads, and with new features that increase driving comfort and safety.
To choose the best tyres for your car, the technical characteristics of the tyres need to be matched to your budget, the particular make of the car, and individual driving habits. A tyre calculator can make it much easier to choose safe tyres.
Choose the tyre size you need
How do I choose new tyres for my car?
Tyres are the only point of contact between the car and the road, so their quality and ability to grip the road surface well is crucial to ensure good handling. This is why car manufacturers work closely with tyre manufacturers to determine the optimum tyre parameters for each make of car.
This information can be found:
- In the Driver’s Handbook;
- On the driver’s side door label;
- In consultation with experienced tyre service staff; and
- Using a tyre calculator.
What Aspects Should I Consider When Choosing Tyres?
There are no accidental parts in the car’s design. Inadequate tyres not only reduce the handling and performance of the car, but they also increase structural damage and compromise road safety.
New tyres need to meet both the car manufacturer’s recommendations and individual preferences, as well as road conditions and driving habits, so there are a number of aspects to consider when planning a tyre replacement, including:
- Tyre diameter, width, and height;
- Technical parameters such as tyre load capacity and speed index;
- Seasonality, such as winter, summer, or all-season tyres;
- Tyre age;
- Tyre compound quality;
- Budget, such as premium, mid-range, or budget tyres;
- Tyre tread pattern; and
- Other features such as noise performance, fuel economy, and run-flat technology.
How Can the Wrong Tyre Affect a Car’s Handling?
The wrong tyre diameter, width, and height have a significant impact on the car’s handling. Increasing or decreasing the tyre size also changes the car’s acceleration potential, rolling resistance, inertia, chassis height, and centre of gravity proportionally.
These aspects increase the car’s roll and reduce the car’s cornering precision. The greater the deviation from optimum tyre sizes, the more difficult and tiring driving becomes.
How Can a Tyre Calculator Help Me Choose Tyres?
While information on the most suitable tyre sizes for a particular make of car can be found in the driver’s handbook or on the markings on the existing tyre and driver’s side door, the tyre calculator offers a quicker and more convenient way to find the right tyres for your car.
The tyre calculator provides up-to-date information on the most suitable tyres for your car and links the search results to the tyre service depot so you can order the tyre kit of your choice instantly.
What If I Want to Change Tire Size?
If you are planning to change tire sizes, it’s worth remembering that there are often several tire sizes for a car make; for example, optimum, reduced, or increased. The overall diameter of the wheel should only vary by about 2% from the manufacturer’s specifications to avoid any negative effects on car performance.
The tire calculator provides safe alternatives to changing tire sizes according to the information entered.