Factors

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.

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.
  • Failure to routinely check your tyres for wear or damage.
  • Failure to maintain correct tyre pressure (over or under inflated)
  • Re-inflating a tyre that has been run flat or seriously under inflated.
  • Using a spare tyre of a different size at speeds in excess of 50 mph.
  • Failure to notice a change in handling, noise or vibration.
  • Mixing tyre types.
  • Not having tyre damage inspected by a professional
  • Failure to have a tyre inspected immediately after a severe impact.
  • Driving style.
  • Using different sizes and type of tyre.
  • When towing: Failure to increase the towing vehicle’s rear tyre pressures - and not reducing them after towing.
  • Not replacing a tyre valve when replacing tubeless tyres.
  • Carrying out repairs yourself and not through tyre specialist.
  • Considering temporary repairs as a permanent solution.
  • Using tyres on damaged, distorted or modified wheels.
  • Using wheel and rim sizes that do not match.
  • Removing and/or fitting tyres yourself rather than using a trained tyre specialist.
  • Not balancing tyres after they are fitted or replaced.
  • Fitting tyres that do not have a speed capability and load index at least equal to or higher than those originally specified by the vehicle manufacturer.
  • Use of sealants that have not been approved.
  • Using summer tyres for cold and winter weather.
  • Improper tyre storage.
  • Extremes of temperature.
  • Rain, ice, snow.
  • Oil, grease and other chemicals.
  • Strong sunlight and ozone.

Human
 
  • Failure to routinely check your tyres for wear or damage.
  • Failure to maintain correct tyre pressure (over or under inflated)
  • Re-inflating a tyre that has been run flat or seriously under inflated.
  • Using a spare tyre of a different size at speeds in excess of 50 mph.
  • Failure to notice a change in handling, noise or vibration.
  • Mixing tyre types.
  • Not having tyre damage inspected by a professional
  • Failure to have a tyre inspected immediately after a severe impact.
  • Driving style.
  • Using different sizes and types of tyre.
  • When towing: Failure to increase the towing vehicle's rear tyre pressures - and not reducing them after towing.
  • Not replacing a tyre valve when replacing tubeless tyres.
  • Carrying out repairs yourself and not through tyre specialist.
  • Considering temporary repairs as a permanent solution.
  • Using tyres on damaged, distorted or modified wheels.
  • Using wheel and rim sizes that are not compatible.
  • Removing and/or fitting tyres yourself rather than using a trained tyre specialist.
  • Not balancing tyres after they are fitted or replaced.
  • Fitting tyres that do not have a speed capability and load index at least equal to or higher than those originally specified by the vehicle manufacturer.
  • Use of sealants that have not been approved.
  • Using summer tyres in snow and ice conditions.
  • Improper tyre storage
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