ミシュランのインスタグラム(michelinusa) - 9月2日 00時21分

Did you know tires used to be white? Rubber's natural color is white, and it wasn’t until the early 1900s that manufacturing companies added carbon to the tire’s tread to strengthen them, resulting in whitewall tires. Later, carbon chemicals were added to the whole tire, making it entirely black. Hope you're having a great Labor Day, and don't forget - no more wearing white!

[BIHAKUEN]UVシールド(UVShield)

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