Help me to choose the right tire

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Find your size on your tire

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

What do these letters and numbers mean?

Tire Type

Type of vehicle the tire fits:

P: Passenger metric
LT: Light Truck
T: Temporary Spare
ST: Special Trailers

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

Tire Width or Section Width
Width of the tire (or thickness) in millimetres is measured from a tire’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 tire’s sidewall height and the tire’s width. The lower the ratio, the smaller the sidewall height, which means better cornering, but a rougher ride.

Construction
This indicates the tire’s internal construction. They can be “Radial” like most tires, 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 tire is designed to fit.

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

Load index chart

LOAD INDEX lBS kg
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
83 1074 487
82 1047 475
84 1102 500
85 1135 515
86 1168 530
87 1201 545
88 1235 560
89 1279 580
90 1323 3600
91 1356 345
92 1389 355
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 tire 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 tire, refer to the speed rating chart. Exceeding the lawful speed limit is neither recommended nor endorsed.

Speed rating chart

  MAXIMUM SPEED
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 112mph 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
  TYPE/VEHICULE TYPE
L Off-Road & Light Truck Tires Off-Road & Light Truck Tires  
M Temporary Spare Tire Temporary Spare Tire  
N Temporary Spare Tires  
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 tire 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 tire information sticker on your driver’s side door.
  • Usually those elements contain all the information relating to your tire size and specifications, as well as the appropriate tire pressure.

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

What are OE tires?

OE stands for “Original Equipment”, meaning that the tires 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 tires that are specifically made for their brand. These tires have a special OE marking on the sidewall. In this case, Michelin recommends replacing the tires on your vehicle only with tires 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
  • MO1 = AMG
  • RO1 = QUATTRO

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