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Tire size decoder: read your sidewall
Every tire has its size printed on the sidewall. Type it in to see what the numbers mean, compare another size, and check how old the tire is.
Decode a tire size
Tap a part of the size to see what it means.
Find the letters DOT on the sidewall. The last four digits are the week and the year it was made: 2321 is week 23 of 2021.
Other marks on the sidewall
DOT
Date of manufactureThe four digits at the end of the DOT code give the week and year the tire was made.
M+S
Mud and snowA marking on many all-season tires. It is a label, not a winter traction test.
3PMSF
Mountain and snowflakeA symbol showing the tire passed a snow traction test. Look for it on winter tires.
XL
Extra loadThe tire is built to carry a higher load than a standard tire of the same size.
Swapping tires for the season
A common rule of thumb is to put winter tires on when the daily temperature stays around 7 °C or below, and to take them off when it stays above that. Look for the mountain and snowflake symbol on winter tires, and keep your summer or all-season set somewhere dry.
Not sure what to fit? Call Family Tire Service in Mount Pearl and have your tire size ready.
Have your size? Call us.
Family Tire Service, 7 Riverview Ave, Mount Pearl.