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Help me choose the right tyre

Find your size on your tyre

  • Look at the sidewall of any one of your tyres and make note of the numbers and letters on it.
  • The information will allow you to research tyres that fit your car.

What do these letters and numbers mean?
Tyre Type
Type of vehicle the tyre fits:

P: Passenger metric
LCV: Light Commercial i.e. Vehicle
T: Temporary Spare
ST: Special Trailers

If your tyre has no letter, it signifies that your tyre is a euro “metric” size.

Tyre Width or Section Width

Width of the tyre (or thickness) in millimeters is measured from a tyre’s widest point of its outer sidewall to the widest point of its inner sidewall.
Why millimeters? It originated in Europe, which uses the metric system.

Aspect Ratio

Aspect ratio is the relationship between the tyre’s sidewall height and the tyre’s width. The lower the ratio, the smaller the sidewall height, which means better cornering, but a rougher ride.


This indicates the tyre’s internal construction. They can be “Radial” like most tyres, or D, for “Diagonal construction” or B, for “Belted”.*

Wheel Diameter

The number is in inches and indicates the diameter of the wheel on which the tyre is designed to fit.

Load Index

This indicates how much weight the tyre is certified to carry at maximum safe inflation. Numbers refer to a chart that specify the load capacity that the tyre can carry. For example 97 = 1,609 pounds.

Load index chart

71 761 345
72 783 355
73 805 365
74 827 375
75 853 387
76 882 400
77 908 412
78 937 425
79 936 437
80 992 450
81 1019 462
82 1047 475
83 1074 487
84 1102 500
85 1135 515
86 1168 530
87 1201 545
88 1235 560
89 1279 580
90 1323 3600
91 1356 3615
92 1389 630
93 1433 650
94 1477 670
95 1521 690
96 1565 710
97 1609 730
98 1653 750
99 1709 775
100 1764 800
101 1819 4825
102 1874 4850
103 1929 875
104 1984 900
105 2039 925
106 2094 950
107 12149 975
108 2205 1000
109 2271 1030
110 2337 1060


Speed Rating

This indicates the maximum safe speed at which a tyre is certified to carry a load under specified conditions. Speed ratings range from A (lowest) to Y (highest), with one exception: H falls between U and V. To find the maximum speed for your tyre, refer to the speed rating chart. Exceeding the lawful speed limit is neither recommended nor endorsed.

Speed rating chart

L 75 mph 120 km/h
M 81 mph 130 km/h
N 87 mph 140 km/h
Q 99 mph 160 km/h
R 106 mph 170 km/h
S 112 mph 180 km/h
T 118 mph 190 km/h
U 124 mph 200 km/h
H 130 mph 210 km/h
V 149 mph 240 km/h
Z 149+ mph 240+ km/h
W 168 mph 270 km/h
Y 186 mph 300 km/h
(Y) 186+ mph 300+ km/h
L Off-Road & Light Truck Tyres
M Temporary Spare Tyre
N Temporary Spare Tyres
Q Winter 4x4
R Heavy Duty Light Truck
S Family Sedans & Vans
T Family Sedans & Vans
U Sedans & Coupes
H Sport Sedans & Coupes
V Sport Cars
Z Sport Cars
W Exotic Sport Cars
Y Exotic Sport Cars
(Y) Exotic Sport Cars

Find your tyre size in your vehicle owner’s manual or on your car door

  • Find the information in your vehicle owner’s manual in the glove compartment or on the tyre information sticker on your driver’s side door.
  • Usually those elements contain all the information relating to your tyre size and specifications, as well as the appropriate tyre pressure.

See the “Find your tyre size on your tyre” tab for a full description of the numbers and letters.

What are OE tyres?

OE stands for “Original Equipment”, meaning that the tyres were approved by your vehicle manufacturer to come standard on your vehicle.

Some vehicle manufacturers, such as Audi, BMW, Mercedes and others, equip their vehicles with tyres that are specifically made for their brand. These tyres have a special OE marking on the sidewall. In this case, Michelin recommends replacing the tyres on your vehicle only with tyres equipped with necessary OE marking.
Table of OE markings by vehicle brand :

 = BMW, Mini
MO = Mercedes
AO = Audi
VO = Volkswagen
N0, N1, N2, N3, N4 = Porsche

What should I think about when choosing a tyre?

Once you know what size tyres can fit your car, you need to be able to choose between the different types of tyres. Tyres may look similar, but they can be optimised to perform for very different conditions and usages.


Think about the following things:

  1. What weather conditions do I drive in? What are the worst situations I may face?
  2. Where will I be driving? City streets, long motorways or forest tracks require different performance characteristics.
  3. What is your driving style: do you like to feel every curve or be cushioned from the road?

Read the rest of our tips to dive deeper into each question.

What weather conditions do I drive in?

Your tyres have to handle a wide variety of climatic conditions: rain, high heat, snow, ice and so on. These all affect tyre performance, so to make sure that you stay safe you need to buy tyres that will perform not only in your most common climate conditions, but also in the most extreme conditions that you will face.

The climate is relatively warm: temperature does not go below 7 °C

The climate is relatively warm:

Temperature does not go below 7 °C

You can choose to buy all-season tyres and/or summer tyres.

The climate is seasonal: in winter, temperature goes below 7 °C

In winter, temperature goes below 7° celcius.
To maximize your safety in all conditions you need:

  • One set of summer tyres and one set of winter tyres or
  • One set of all-season tyres


What type of roads?

Different usage conditions require different tyre characteristics.

For mainly city driving, look for:

  • Braking distance: Use tyres with the optimum braking distance, on both dry and wet roads.
  • Longevity: city driving with its numerous stops and starts puts great demands on the tyre. Choose tyres with increased longevity.
  • Fuel economy: tyres with low rolling resistance save fuel.

For mainly city driving, look for:

  • Braking distance: use tyres with the optimum braking distance, on both dry and wet roads.
  • Longevity: city driving with its numerous stops and starts puts great demands on the tyre. Choose tyres with increased longevity.
  • Fuel economy: tyres with low rolling resistance save fuel.

For mainly road or motorway driving, look for:

  • Braking distance at high speed: for maximum safety, select tyres that provide optimum braking distance on both dry and wet roads.
  • Comfort: for long trips, choose tyres that offer comfort both in terms of vibration and noise level.
  • Handling: select tyres that provide excellent grip and stability.

What is my driving style?

To make sure that you enjoy your drive, look for tyres that match the way you like to drive.

If you like a quiet comfortable ride, look for tyres that specifically mention comfort, smooth ride or low road noise. Generally speaking, tyres with a lower speed rating (S, T or H ratings on the sidewall) are optimised for more comfort instead of more speed – but never go below the speed rating of the specified by the manufacturer of your vehicle. Also, avoid aggressive tread designs – they may look cool but can generate lots of road noise.

If you like to feel every curve look for tyres that mention great handling or steering precision. These are often called high-performance tyres and have higher speed ratings, meaning that they are optimised to provide better control and a stiffer, more precise ride.

How can the labeling legislation help me choose ?

How do I choose between tyre categories?

How do I choose between versions of a tyre line?

Each of our tyre lines is made in a selection of sizes to fit appropriate vehicles. Sometimes a tyre line will have several versions of the same tyre size but with different technical specifications such as speed ratings (ex: S, T, H, V, W, Y, etc.), load index (ex : 91, 94, XL, etc.), or OE markings (designating that a version was specifically designed for a vehicle manufacturer, ex :   = BMW or Mini, MO = Mercedes, etc). These technical specifications are important details that can determine whether or not that version is compatible with your vehicle and the way you drive.
If several versions are compatible with your vehicle, we recommend that you choose the version with the same specifications as your original equipment tyres.
You can also safely select a version with higher speed rating or load index; however, higher speed or load capability can negatively impact tread life and ride comfort.

Can I buy a tyre size that is different from the one that was originally on my vehicle?

For maximum safety, Michelin recommends to only replace your tyres with the same size recommended by the vehicle manufacturer.

Some advice

  • Never choose a tyre that is smaller in size or has less load-carrying capacity than the tyre that came with the vehicle.
  • Tyres should always be replaced with the same size designation — or approved options — as recommended by the vehicle manufacturer.
  • The correct tyre size can be found on the sticker in the door’s vehicle or on the markings on the sidewall.

Can I mix different types of tyres?

  • For maximum safety and best all-around performance, the same type of tyre should always be used on all four wheel positions.
  • Mixing tyres of different size designations, constructions and stages of wear may affect vehicle handling and stability.
  • The one exception to this rule are vehicles that were intentionally fitted by the vehicle manufacturer with different size tyres on the front and rear axles.

Four-wheel drive vehicles

If no instructions for tyre mixing appear in the vehicle owner’s manual, adhere to the following guidelines:

  • Do not mix sizes. All four tyres must be the same tyre size.
  • Do not mix radial and bias-ply tyres. All four must be either radial or bias-ply.
  • Be sure that the outside circumferences of all four tyres are within 1” of each other.
  • Do not mix tread patterns, such as all-terrain and all-season.

Can I buy tyres with different speed ratings?

Yes you can buy tyres with equal or greater speed ratings than your original equipment tyres.

However, tyre speed ratings make a difference not only with regard to speed, but with regard to ride comfort, wear and cornering ability.

The impact of a higher speed rating:

  • Typically, the higher the speed rating, the better the grip and stopping power, but the lower the tread life.

The impact of a lower speed rating:

Although we don’t recommend it, if you use a tyre with a speed rating lower than your vehicle’s original tyres, you will reduce your vehicle’s top speed limit to the tyres’ speed rating.
The handling of a performance vehicle may be different when the replacement tyres are not the same speed rating. Refer to the vehicle owner’s manual to identify any tyre speed rating restriction that could affect operation of the vehicle.

Can you mix different speed ratings on your vehicle?

For best performance, use the same size and type of tyre on all four wheel positions. But if you do mount tyres with different speed ratings on your vehicle, make sure that:

  • The lower speed-rated tyres should always be placed on the front axle. This is to prevent potential over-steering (your vehicle doesn’t follow your steering, turns more sharply and may spin).

How to read speed ratings:

  • Tyre speed ratings range from A (the lowest) to Y (the highest). However, the chart is not completely in alphabetical order. For example, H for high speed is between U and V.

Can I change my load capacity?

  • You can only mount a tyre of equivalent load or higher load than indicated for your vehicle.
  • The higher the tyre's load index number, the greater its load carrying capacity. Typically, the load indexes of the tyres used on passenger cars and light commercial vehicles range 70 to 130.

Can I mount just two new tyres?

Yes – however Michelin recommends replacing all four tyres at the same time.

Some advice

  • When replacing only two new tyres, be sure that the new tyres are the same size and tyre type as the current tyres
  • Make sure that the dealer always installs the new tyres on the rear axle of the vehicle. The new tyres will provide better grip in wet conditions than your older tyres. This will help reduce the potential for the vehicle to fish-tailing and losing stability in wet conditions

Should I buy restored tyres?

Avoid second-hand tyres. You can never know what hazards and abuse a previously owned tyre has suffered. Internal damage can lead to dangerous tyre failure.

What information should I prepare before going?

The more prepared you are before coming to the dealer, the more assured you can be to find the right tyre for your driving needs and have confidence in your purchase.
First, make sure you know what tyre size is compatible with your vehicle using our Tyre Selector tool, looking on your current tyres, or in your vehicle’s manual or tyre information door sticker.

Show me where

Next, think about what you need your tyres to be able to do for you : what weather or road conditions will you drive in, how you like to drive, etc.

  • If you’ve done all of this using our Tyre Selector tool, you can easily print out your search information or send it to your mobile / email. The information pack will have all the information on your search, your selected product, and other compatible alternatives .

5 questions to ask the dealer

  1. What type of tyres do you recommend for my vehicle and my specific driving needs (weather conditions, types of roads, driving style, etc.)?
  2. For that type of tyre, what specific product do you recommend?
  3. Why do you recommend this tyre over others?
  4. Does its price include mounting and balancing?
  5. Are any other services included?

Keep in mind:

  • If a tyre that you’ve selected is not immediately available at your dealer, you can always ask them to order it. It may be available in just one or two days. 
  • Remember that a good price is not always good value: a tyre that lasts longer, helps you to save on fuel and keeps you safe in every condition is better value in the long term.