1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Meaning of tire Sizes

Discussion in 'Wheels & Tires' started by Max-4_Yota, Aug 19, 2010.

  1. Aug 19, 2010 at 7:53 AM
    #1
    Max-4_Yota

    Max-4_Yota [OP] The Welfare Cadilac

    Joined:
    Dec 10, 2009
    Member:
    #27357
    Messages:
    4,267
    Gender:
    Male
    First Name:
    Michael
    South Carolina
    Vehicle:
    04 Tacoma 4x4, V6, 5spd
    Squattin'
    Found this on discount tire and figured I would post it, I see people asking about tire sizes all the time and maybe this will help. Sorry if its a repost, I searched and couldnt find much on the subject. So here ya go...

    The Meaning of the Tire Size Code


    The tire size code consists of a string of letters and numbers as follows:
    • An optional letter (or letters) indicating the intended use or vehicle class for the tire:
      • P - Passenger
      • LT - Light Truck
      • ST - Special Trailer
      • T - Temporary
    • 3 digit number - The width of the tire in millimeters, from sidewall edge to sidewall edge.
    • / - Slash Character
    • 2 digit number - The ratio of the sidewall height to the total width of the tire as a percentage. If this is missing, it is assumed to be 82%. If the number is larger than 200, then this is the diameter of the entire tire in millimeters.
    • Construction of the fabric of the tire
      • B - bias belt
      • D - diagnol
      • R - radial
    • 2 digit number - Diameter in inches of the rim that this tire is designed to fit.
    Example
    The tire might be labelled:


    P195/55R16
    • 'P' these tires are for a passenger vehicle.
    • 195 – the width of the tire is 195 mm at the widest point.
    • 55 – indicates that the height of the side-wall of the tire is 55% of the width - 107 mm.
    • R – this is a radial tire.
    • 16 – this tire fits 16 inch diameter wheels.
     
  2. Aug 19, 2010 at 8:12 AM
    #2
    Pugga

    Pugga Pasti-Dip Free 1983 - 2015... It was a good run

    Joined:
    Jun 18, 2010
    Member:
    #39131
    Messages:
    29,095
    Gender:
    Male
    First Name:
    Mike
    Massachusetts
    Vehicle:
    '13 Ford F-150 SCREW
    F-150 Mod
  3. Aug 19, 2010 at 5:14 PM
    #3
    Archangel

    Archangel Discount Tire Company

    Joined:
    Jul 24, 2010
    Member:
    #40681
    Messages:
    665
    Gender:
    Male
    First Name:
    Matt
    Charlotte, NC
    Vehicle:
    13 Malibu LT
  4. Aug 19, 2010 at 5:16 PM
    #4
    Pugga

    Pugga Pasti-Dip Free 1983 - 2015... It was a good run

    Joined:
    Jun 18, 2010
    Member:
    #39131
    Messages:
    29,095
    Gender:
    Male
    First Name:
    Mike
    Massachusetts
    Vehicle:
    '13 Ford F-150 SCREW
    F-150 Mod
    Yeah, that's a good catch. Even though it's supposed to be a standard it definitely varies from manufacturer to manufacturer.
     
  5. Aug 19, 2010 at 5:40 PM
    #5
    Archangel

    Archangel Discount Tire Company

    Joined:
    Jul 24, 2010
    Member:
    #40681
    Messages:
    665
    Gender:
    Male
    First Name:
    Matt
    Charlotte, NC
    Vehicle:
    13 Malibu LT
    When they came up with the Uniform Tire Quality Grade (UTQG) was that the Uniform Tire meant the same manufacturer
     
To Top