Nissan ARIYA 2023 Owners Manual
12.16.2. Tyre labeling
Tyre labeling identifies and describes the fundamental characteristics of the tyre and also provides the tyre identification number (TIN) for safety standard certification. The TIN can be used to identify the tyre in case of a recall.
(1) Tyre size (example: P215/60R16 94H)
P: The P indicates the tyre is designed for passenger vehicles. (Not all tyres have this information.)
Three-digit number (215): This number gives the width in millimeters of the tyre from sidewall edge to sidewall edge.
Two-digit number (60): This number, known as the aspect ratio, gives the tyre’s ratio of height to width.
R: The R stands for radial.
Two-digit number (16): This number is the wheel or rim diameter in inches.
Two- or three-digit number (94): This number is the tyre’s load index. It is a measurement of how much weight each tyre can support. You may not find this information on all tyres because it is not required by law.
H: Tyre speed rating. You should not drive the vehicle faster than the tyre speed rating.
(2) TIN (Tyre Identification Number) for a new tyre (example: DOT XX XX XXX XXXX)
DOT: Abbreviation for the “Department of Transportation”. The symbol can be placed above, below or to the left or right of the Tyre Identification Number.
Two-digit code: Manufacturer’s identification mark
Two-digit code: Tyre size
Three-digit code: Tyre type code (Optional)
Four numbers represent the week and year the tyre was built. For example, the numbers 3103 means the 31st week of 2003. If these numbers are missing, then look on the other sidewall of the tyre.
(3) Tyre ply composition and material
The number of layers or plies of rubber-coated fabric in the tyre.
Tyre manufacturers also must indicate the materials in the tyre, which include steel, nylon, polyester, and others.
(4) Maximum permissible inflation pressure
This number is the greatest amount of air pressure that should be put in the tyre. Do not exceed the maximum permissible inflation pressure.
(5) Maximum load rating
This number indicates the maximum load in kilograms and pounds that can be carried by the tyre. When replacing the tyres on the vehicle, always use a tyre that has the same load rating as the factory installed tyre.
(6) Term of “tubeless” or “tube type”
Indicates whether the tyre requires an inner tube (“tube type”) or not (“tubeless”).
(7) The word “radial”
The word “radial” is shown, if the tyre has radial structure.
(8) Manufacturer or brand name
Manufacturer or brand name is shown.
Other tyre-related terminology:
In addition to the many terms that are defined throughout this section, Intended Outboard Sidewall is (1) the sidewall that contains a whitewall, bears white lettering or bears manufacturer, brand and/or model name molding that is higher or deeper than the same molding on the other sidewall of the tyre, or (2) the outward facing sidewall of an asymmetrical tyre that has a particular side that must always face outward when mounted on a vehicle.