Tire Service Life

Tire Service Life for Passenger Car and Light Truck Tires

Tires are designed and built to provide many thousands of miles of excellent service but must be maintained properly.  As explained below, the service life of a tire is affected by many factors that are independent of the chronological age of the tire alone.

Service Life is Not Determined by Chronological Age

Tires are composed of various materials, including rubber, having performance properties essential to the proper functioning of the tire.  These component properties evolve over a combination of time, service and storage conditions.  For each individual tire, this change is affected by many elements such as temperature, storage conditions, and conditions of use (e.g., load, speed, inflation pressure, impacts and road hazard injury) to which a tire is subjected throughout its life.  Since service and storage conditions vary widely, accurately predicting the actual serviceable life of any specific tire based on simple calendar age is not possible.  RMA is not aware of reliable and accurate scientific or technical data that establishes a specific minimum or maximum service life for passenger and light truck tires. However, in some cases a tire or vehicle manufacturer may make a specific tire replacement recommendation regarding its products. If so, the consumer should consult the manufacturer with any questions with regard to following the recommendation.  Further, any such recommendation should not be considered a minimum serviceable life for the tire.  Read the Entire RMA Statement

NHTSA Report: Tires More Robust, Performing Better

Tire Aging: A Summary of NHTSA’s Work, March 2014

Additional Resource:
2012 NHTSA  Study: Tire-Related Factors in the Pre-Crash Phase