Fig. 188 Tire designations on the sidewall
P indicates a tire for a passenger vehicle. T indicates a tire designated for temporary use.
Nominal width of the tire between the sidewalls in millimeters.
In general: the larger the number, the wider the tire.
Height/width ratio expressed as a percentage.
R indicates a radial tire.
Size of the rim diameter in inches.
The load index indicates the tire's load-carrying capacity.
The speed rating indicates the maximum permitted speed in Winter tires.
"EXTRA LOAD", "xl" or "RF" indicates that the tire is reinforced or is an Extra Load tire.
P - up to 93 mph (150 km/h)
Q - up to 99 mph (160 km/h)
R - up to 106 mph (170 km/h)
S - up to 110 mph (180 km/h)
T - up to 118 mph (190 km/h)
U - up to 124 mph (200 km/h)
H - up to 130 mph (210 km/h)
V - up to 149 mph (240 km/h)a)
Z - above 149 mph (240 km/h)a)
W - up to 168 mph (270 km/h)a)
Y - up to 186 mph (300 km/h)a)
a) For tires above 149 mph (240 km/h), tire manufacturers sometimes use the code "ZR" .
The manufacture date is listed on the tire sidewall (it may only appear on the inner side of the tire):
DOT ... 2216 ...
means, for example, that the tire was produced in the 22nd week of the year 2016.
Audi Original equipment tires with the designation "AO" have been specially matched to your Audi. When used correctly, these tires meet the highest standards for safety and handling. An authorized Audi dealer or authorized Audi Service Facility will be able to provide you with more information.
"M/S" or "M+S" indicates the tire is suitable for driving on mud and snow. indicates a winter tire.
The number of plies indicates the number of rubberized fabric layers in the tire. In general: the more layers, the more weight a tire can carry. Tire manufacturers must also specify the materials used in the tire. These include steel, nylon, polyester and other materials.
This number indicates the maximum load in kilograms and pounds that the tire can carry.
Tread wear, traction and temperature ranges.
The arrows indicate the running direction of unidirectional tires.
You must always follow the specified running direction.
This number indicates the maximum pressure to which a tire can be inflated under normal operating conditions.