There are three main enemies of the tyre: physical, environmental and ‘human factors’. Common enemies include: inflation pressure, road hazards, tread depth, weather conditions, lack of maintenance, load, speed, and so on. With so many enemies of the tyre, it’s quite impossible to accurately predict a tyre’s service life. Michelin tyres are designed to provide many thousands of miles of excellent service. If not maintained properly, however, they will be subjected to greater wear and damage and, possibly, become unsafe.
The three main enemies of the tyre at a glance:
Physical
Age.
Wear and damage (punctures, cuts, impacts, cracking/crazing of the tread/sidewall rubber, lumps and bulges, etc).
Driving over pot-holes, kerbs, speed humps etc.
Wear and damage (punctures, cuts, impacts, cracking/crazing of the tread/sidewall rubber, lumps and bulges, etc).
Driving over pot-holes, kerbs, speed humps etc.
Human Factors
Failure to routinely check your tyres for wear or damage.
Environmental
Extremes of temperature
Rain, ice or snow
Oil, Grease or other chemicals
Strog sunlight and ozone layer
Rain, ice or snow
Oil, Grease or other chemicals
Strog sunlight and ozone layer
These were found on Michelin website