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Thread: Tire Markings

  1. #1
    Join Date
    Mar 2013
    Location
    Chicago
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    3,988

    Default Tire Markings

    20200206_123542.jpg

    If you look at the sidewall on this passenger car tire there's a yellow dot At 12 and there's a red dot at 2. I'm pretty sure I remember being told once that those colored dots on the side walls on passenger tires are there because if you align the dot with the valve stem it will facilitate the least amount of wheel weight necessary to balance the tire. That doesn't explain two dots on the same side wall or the different colors. Does anybody out there have any information and can help clear this up for me?
    1990 Peterbuilt 377
    3406 B Caterpillar
    13 Speed Roadranger
    No Norgrens


    1 day on paper no machines

  2. #2
    Join Date
    Oct 2012
    Location
    Smithville
    Posts
    326

    Default

    Yellow is tire sensor position and red is a rough/low spot in the tire

  3. #3
    Join Date
    Mar 2013
    Location
    Chicago
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    Default

    Where did u find that info? The red or the yellow gets lined up with the valve stem or no?
    Last edited by Joe Camper; 02-07-2020 at 09:37 AM.
    1990 Peterbuilt 377
    3406 B Caterpillar
    13 Speed Roadranger
    No Norgrens


    1 day on paper no machines

  4. #4
    Join Date
    May 2019
    Location
    Box Elder
    Posts
    36

  5. #5
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    Mar 2013
    Location
    Chicago
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    Default

    Thanks. The explanation still has me a bit unsure but thanks. In any event the guy who mounted the one in the photo didn't get it right neither dots lineup with the valve stem.
    1990 Peterbuilt 377
    3406 B Caterpillar
    13 Speed Roadranger
    No Norgrens


    1 day on paper no machines

  6. #6
    Join Date
    May 2012
    Location
    Beverly Hills
    Posts
    4,652

    Default

    Straight from a tire manufacturer.

    https://www.yokohamatire.com/tires-1...match-mounting


    Gil and Durlene
    2003 H-3 Hoffman Conversion

  7. #7
    Join Date
    Sep 2019
    Location
    Guilford
    Posts
    44

    Default

    Sumatomo Truck tires had a green dot as a balance marker to line up the valve stem. but that was 40 years ago and most tire guys had no odea what it was for.

  8. #8
    Join Date
    Jan 2006
    Location
    Pinehurst
    Posts
    950

    Default

    At least it isn't under inflated like some tires I know!

    Loc - 2008 Marathon XLII - Houston

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