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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?