Buick Encore: Wheels and Tires / Tire Designations

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

Tire Size

The example shows a typical passenger vehicle tire size.

Buick Encore. Tire Designations

Passenger (P-Metric) Tire

  1. Passenger (P-Metric) Tire : The United States version of a metric tire sizing system. The letter "P" as the first character in the tire size means a passenger vehicle tire engineered to standards set by the U.S. Tire and Rim Association.
  2. Tire Width : The 3-digit number indicates the tire section width in millimeters from sidewall to sidewall.
  3. Aspect Ratio : A 2-digit number that indicates the tire height-to-width measurements. For example, if the tire size aspect ratio is 75, as shown in item (3) of the illustration, it would mean that the tire's sidewall is 75 percent as high as it is wide.
  4. Construction Code : A letter code is used to indicate the type of ply construction in the tire. The letter "R" means radial ply construction; the letter "D" means diagonal or bias ply construction.
  5. Rim Diameter : Diameter of the wheel in inches.
  6. Service Description : These characters represent the load index and speed rating of the tire. The load index represents the load carrying capacity a tire is certified to carry. The speed rating is the maximum speed a tire is certified to carry a load.

    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. 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...

    Tire Terminology and Definitions

    Air Pressure : The amount of air inside the tire pressing outward on each square inch of the tire. Air pressure is expressed in kPa (kilopascal) or psi (pounds per square inch)...

    Other information:

    Buick Encore 2020-2022 Owner's Manual: Collision Damage Repair


    If the vehicle is involved in a collision and it is damaged, have the damage repaired by a qualified technician using the proper equipment and quality replacement parts. Poorly performed collision repairs diminish the vehicle resale value, and safety performance can be compromised in subsequent collisions...

    Buick Encore 2020-2022 Owner's Manual: Reclining Seatbacks


    Warning If either seatback is not locked, it could move forward in a sudden stop or crash. That could cause injury to the person sitting there. Always push and pull on the seatbacks to be sure they are locked. Manual Seat Shown, Power Seat Similar To recline the seatback: Lift the lever...

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    Steering Wheel Adjustment

    Buick Encore. Steering Wheel Adjustment

    To adjust the steering wheel:

    Pull the lever down. Move the steering wheel up or down. Pull or push the steering wheel closer or away from you. Lift the lever up to lock the steering wheel in place.

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