It’s no easy task to predict the life span of tires, which does not depend on their production date. Tires which haven’t been used at all, or which have only been used lightly, can still show signs of aging. Several factors may affect their service life: weather conditions, storage and usage conditions, load, speed, tire pressure, upkeep, driving style, etc.
Michelin recommends every driver regularly spend a few minutes inspecting their tires to detect any external sign of aging or wear, including deformations or cracks on the tire tread, shoulders, or sidewalls, etc.
Also have them checked out by a professional, who will confirm whether of not they are still good.
The 5 year test… before it's too late!
After five or more years of use, tires must be checked every year by a professional mechanic. If they need to be changed, follow the manufacturer’s suggestions regarding the replacement of original parts. As a precaution, replace any tire that has not been changed after ten years of service life, even if it seems to be in good condition and hasn’t reached its wear limit.