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2. Flat tire - Wikipedia

   en.wikipedia.org/wiki/Flat_tire

   Patch repair is commonly used in a repair shop. Some may not patch a worn tire if: the hole is close to a previous patch; there are already more than two patches; the puncture requires more than two patches; the punctures are too close, and/or the puncture is close to the sidewall. A patch is performed by removing the tire, marking the puncture ...

3. Michelin PAX System - Wikipedia

   en.wikipedia.org/wiki/Michelin_PAX_System

   With conventional tires, low tire pressure can be noticed due to sidewall deformation; With reinforced sidewall zero-pressure run-flat type tires, there is no warning when a tire was going flat. This low or no-pressure condition was almost impossible to detect by the driver with a zero pressure run flat, until the tire failed.

4. Tire uniformity - Wikipedia

   en.wikipedia.org/wiki/Tire_uniformity

   Tire uniformity refers to the dynamic mechanical properties of pneumatic tires as strictly defined by a set of measurement standards and test conditions accepted by global tire and car makers. These standards include the parameters of radial force variation , lateral force variation , conicity, ply steer, radial run-out , lateral run-out , and ...

5. Cornering force - Wikipedia

   en.wikipedia.org/wiki/Cornering_force

   The exact ratio of sidewall compliance to tread compliance is a factor in tire construction and inflation pressure. [ 3 ] Because the tire deformation tends to reach a maximum behind the center of the contact patch, by a distance known as pneumatic trail , it tends to generate a torque about a vertical axis known as self aligning torque .

6. Contact patch - Wikipedia

   en.wikipedia.org/wiki/Contact_patch

   Colorized tire footprint pressure distribution. The contact patch is the portion of a vehicle's tire that is in actual contact with the road surface.It is commonly used in the discussion of pneumatic (i.e. pressurized) tires, where the term is used strictly to describe the portion of the tire's tread that touches the road surface.

7. Tire maintenance - Wikipedia

   en.wikipedia.org/wiki/Tire_maintenance

   Tire maintenance for motor vehicles is based on several factors. The chief reason for tire replacement is friction from moving contact with road surfaces, causing the tread on the outer perimeter of tires to eventually wear away. When the tread depth becomes too shallow, like for example below 3.2 mm (4/32 in), the tire is worn out and should ...