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car tyre size

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We help you find the right tyres size for your car

Need to change your tyres?
15 inch tyres? 20 inch tyres? Are you having a hard time identifying your tyres’ size? Keep in mind that knowing the correct tyre size is essential to minimize safety risks and achieve the best driving performance. Your tyre choice must also comply with the law and the recommendations of the vehicle manufacturer.   

Rest assured: determining your car’s tyre size is not as complicated as it might seem. To choose the right MICHELIN® tyre size, open your vehicle owner’s manual or your driver’s side door: the tyre size of your car and load/speed rating information is there.

Select your tyre size and find the right car tyre for you

How to read a tyre size?

For example, if you read 205/55R17 91V, it means:

  • 205 represents the width of the tyre (in millimetres)
  • 55 represents the height in comparison to the width in percentage
  • R is the type of construction (R for radial, D for diagonal and B for belted)
  • 17 is the wheel’s diameter (in inches)
  • 91 is the speed and load rating.
  • V represents the speed index defining the maximum speed at which the tyre can go


tyre size

Identifying the tyre for your needs can also be done through our tyre selector. Make the most of our expertise! It helps you find the best tyre for your vehicle and your driving style.  Based on the information you provide, our selector will display the manufacturer-approved tyres designed specifically for your vehicle, as well as a list of sizes compatible with the original ones.

If you prefer, you can also find your tyre by selecting your car type or usage, or by selecting your car brand.

If you don’t have access to this information and if you need more details on car tyres sizes, please visit our guide: how to choose the right tyre?

It is recommended that you follow the manufacturers' recommendations when replacing your tyres. Michelin recommends the installation of identical 4 identical tyres on all 4 driving wheels of your vehicle (except if your vehicle is originally equipped with different dimensions, front and rear).

When searching by tyre size alone, please be aware that the displayed results may not be applicable (or recommended) for your vehicle due to several factors (including but not limited to size, speed rating, load capacity, intended service conditions, etc.). Please seek expert advice.

Need assistance or have questions? We are here to help. Contact us. Our experts are at your service to offer you the best advice on tyres.

Legal Mentions

The load and/or speed ratings displayed may differ slightly from the original size specified on the vehicle label. As a qualified professional, your tyre dealer will be able to advise you in:

1. Informing you if the load and/or speed rating of the replacement tyres is different from the original tyres.

2. Determining whether the tyre pressure should be adjusted for the proposed alternative size


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