It is recommended that the tyre size, load index and speed symbol are in accordance with the vehicle manufacturer’s specification for all wheel positions. In many countries, this is a legal requirement. Driving your vehicle with a non-recommended mix of tyre sizes, constructions, and speed ratings can be dangerous and illegal. Follow the vehicle manufacturer’s recommendations and/or seek the advice from a trained tyre specialist if you consider upgrading your tyres with different sizes, constructions, load ratings or speed ratings. Some vehicles may come factory equipped with different size tyres fitted to the front and rear axle. Do not change this configuration unless approved by the vehicle manufacturer.