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Speed ratings, tire testing, what’s the point in pondering them?
The DOT symbol on the tire represents approval. Factual physical findings that would lead to tire failures caused by ineffective testing would surely lead to NHTSA recalls.
A quote from 49 CFR 574.5 Tire identification requirements.
“The DOT symbol constitutes a certification that the marked tire conforms to an applicable Federal Motor Vehicle Safety Standard.”
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