What you should know about mixing tyres on your vehicle.

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Mixing of tyres

What you should know about mixing tyres on your vehicle.

In order to achieve optimal driving conditions, Continental recommends that the same tyres are fitted on all wheel positions of your car. In other words, tyres of the same brand, tread pattern, size, load index and speed symbol should be fitted all around. It is especially important for the tyre size, load index and speed symbol to be in accordance with the car manufacturer’s specifications, on all wheel positions. In many countries, this is a legal requirement. Driving with a non-recommended mix of tyre sizes, constructions, and speed ratings can be dangerous and illegal. Follow the manufacturer’s recommendations and/or seek the advice of a trained specialist if you are considering upgrading your tyres to ones of differing sizes, constructions, load ratings or speed ratings.

Why is tyre rotation beneficial?

To achieve uniform wear and to maximise tread life, your tyres should be regularly rotated. Follow the vehicle manufacturer’s recommendations for the tyre rotation pattern and interval. Unless otherwise specified by the manufacturer, Continental recommends rotating the wheels axle-wise at regular intervals. For example, when changing from summer to winter tyres, or at mileage intervals of between 5,000 km and 10,000 km, and sooner if uneven tread wear begins to appear. If tyres start to show uneven tread wear, ask the service person to check and/or put right any wheel fitting misalignment or other mechanical problem.

Full-size spare tyres (not temporary spares) of the same size and construction as the ground contact tyres, should be included in the rotation. Always check and adjust the inflation pressure of the full-size spare when incorporating it into rotation.

Adjust the tyre inflation pressures according to the car manufacturer’s recommendations for the new wheel position (front and rear position pressures may be different).

Rotation of your tyres may affect the Tyre Pressure Monitoring System (TPMS). Consult your car owner’s manual or a qualified service professional to make the proper adjustments or a recalibration of the system.

Can I mix different tyre brands and different tread patterns on my vehicle?

We recommend that the same tyres are fitted on all wheel positions of your vehicle. If, however, mixing is necessary (due to availability at the time or financial considerations), then it is permissible to mix brands and tread patterns – as long as the same treads and brands are fitted across the same axle. It may also be possible to mix load index and speed symbol as long as the load index and speed symbols are above the minimum vehicle manufacturer’s recommendations (extra load vs standard load). In such cases, the higher-rated tyres should be installed on the rear axle. 

Can different tread pattern depths be mixed?

If you decide to only replace two tyres on your vehicle, then the new tyres will probably have more tread depth than the originals remaining on the vehicle. The mixing of different tread depths is generally permissible.

The tyre industry recommends that the new tyres be mounted onto the rear axle. 

Placing greater grip on the rear axle is generally recommended to prevent a possible over-steer condition and loss of vehicle stability on slippery surfaces. Some car manufacturers recommend installing the newest tyres on the front axle. Consult with the car manufacturer and/or tyre specialist for further information.

Exception for approved-mix tyre fitments

Some vehicles may come factory equipped with differently sized tyres fitted to the front and rear axle. You should follow the manufacturer’s recommendations for these approved mix fitments.

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