Buick Encore: Wheels and Tires / Tire Sidewall Labeling

Buick Encore 2020-2022 Owner's Manual / Vehicle Care / Wheels and Tires / Tire Sidewall Labeling

Useful information about a tire is molded into its sidewall. The examples show a typical passenger vehicle tire and a compact spare tire sidewall.

Buick Encore. Tire Sidewall Labeling

  1. Tire Size : The tire size is a combination of letters and numbers used to define a particular tire's width, height, aspect ratio, construction type, and service description. See the “Tire Size” illustration in this section.
  2. TPC Spec (Tire Performance Criteria Specification) : Original equipment tires designed to GM's specific tire performance criteria have a TPC specification code molded onto the sidewall. GM's TPC specifications meet or exceed all federal safety guidelines.
  3. DOT (Department of Transportation) : The Department of Transportation (DOT) code indicates that the tire is in compliance with the U.S. Department of Transportation Motor Vehicle Safety Standards.

    DOT Tire Date of Manufacture : The last four digits of the TIN indicate the tire manufactured date. The first two digits represent the week and the last two digits, the year. For example, the third week of the year 2020 would have a 4-digit DOT date of 0320. Week 01 is the first full week (Sunday through Saturday) of each year.

  4. Tire Identification Number (TIN) : The letters and numbers following the DOT (Department of Transportation) code are the Tire Identification Number (TIN). The TIN shows the manufacturer and plant code, tire size, and date the tire was manufactured. The TIN is molded onto both sides of the tire, although only one side may have the date of manufacture.
  5. Tire Ply Material : The type of cord and number of plies in the sidewall and under the tread.
  6. Uniform Tire Quality Grading (UTQG) : Tire manufacturers are required to grade tires based on three performance factors: tread wear, traction, and temperature resistance. For more information see Uniform Tire Quality Grading.
  7. Maximum Cold Inflation Load Limit : Maximum load that can be carried and the maximum pressure needed to support that load.

Buick Encore. Tire Sidewall Labeling

  1. Tire Ply Material : The type of cord and number of plies in the sidewall and under the tread.
  2. Temporary Use Only : The compact spare tire or temporary use tire should not be driven at speeds over 80 km/h (50 mph). The compact spare tire is for emergency use when a regular road tire has lost air and gone flat. If the vehicle has a compact spare tire, see Compact Spare Tire and If a Tire Goes Flat.
  3. Tire Identification Number (TIN) : The letters and numbers following the DOT (Department of Transportation) code are the Tire Identification Number (TIN). The TIN shows the manufacturer and plant code, tire size, and date the tire was manufactured. The TIN is molded onto both sides of the tire, although only one side may have the date of manufacture.
  4. Maximum Cold Inflation Load Limit : Maximum load that can be carried and the maximum pressure needed to support that load.
  5. Tire Inflation : The temporary use tire or compact spare tire should be inflated to 420 kPa (60 psi). For more information on tire pressure and inflation see Tire Pressure.
  6. Tire Size : A combination of letters and numbers define a tire's width, height, aspect ratio, construction type, and service description. The letter “T” as the first character in the tire size means the tire is for temporary use only.
  7. TPC Spec (Tire Performance Criteria Specification) : Original equipment tires designed to GM's specific tire performance criteria have a TPC specification code molded onto the sidewall. GM's TPC specifications meet or exceed all federal safety guidelines.

    Winter Tires

    This vehicle was not originally equipped with winter tires. Winter tires are designed for increased traction on snow and ice-covered roads. Consider installing winter tires on the vehicle if frequent driving on ice or snow covered roads is expected...

    Tire Designations

    Tire Size The example shows a typical passenger vehicle tire size. Passenger (P-Metric) Tire Passenger (P-Metric) Tire : The United States version of a metric tire sizing system...

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