Tire Terminology And Definitions - Alfa Romeo 4C 2017 Owner's Manual

160 STARTING AND OPERATING
DOT = Department of Transportation
– This symbol certifies that the tire is in compliance with the U.S. Department of Transportation tire
safety standards and is approved for highway use
MA = Code representing the tire manufacturing location (two digits)
L9 = Code representing the tire size (two digits)
ABCD = Code used by the tire manufacturer (one to four digits)
03 = Number representing the week in which the tire was manufactured (two digits)
– 03 means the 3rd week
01 = Number representing the year in which the tire was manufactured (two digits)
– 01 means the year 2001
– Prior to July 2000, tire manufacturers were only required to have one number to represent the year
in which the tire was manufactured. Example: 031 could represent the 3rd week of 1981 or 1991

Tire Terminology And Definitions

Term
B-Pillar
Cold Tire Inflation Pressure
EXAMPLE:
DOT MA L9 ABCD 0301
The vehicle B-Pillar is the structural member of the body located
behind the front door.
Cold tire inflation pressure is defined as the tire pressure after
the vehicle has not been driven for at least three hours, or driven
Definition