Tires are a brand that my dad sold at his Esso station back in the 1950s (but is now made in Thailand by a different manufacturer). I mounted these using the yellow dot lined up with valve stem (and on same side of rim as valve stem, but the dots go on inside). Atlas uses the same system as Yokohama and it seems that this mounting system is being phased in by Goodyear and some other brands, but I checked a lot of Goodyear tires at local tire dealers and only some had both the red and yellow dots, my daughter's had only the red on her Goodyear Assurance, and most had no dots at all. Anyway, my Atlas tires balanced out with no vibration with no tire weights, which indicates they are more precisely made than most tires. To check out info on the dots, see the Yokohama website. (After questioning employees at tire shops, most of them need some instruction in tire mounting also.) Anyway, basically the red dot is the high spot on tire and should be aligned with low spot on rim if your rim is marked (maybe a dimple or a white dot) or maybe you can determine the low spot on rim yourself (I could not find a low spot on mine). If you cannot determine the low spot on rim, ignore the red dot and align yellow dot as previously mentioned.
I would definitely recommend these tires.
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