M
Definition : Up to 81 mph
Category : Technology Automotive
Country/Region : United States United States
Popularity :

What does M mean?

M is a tire speed rating code in the U.S. Department of Transportation (DOT). The speed rating tells you the speed the tire can safely maintain over time. A higher speed rating usually means you will have better control and handling at higher speeds and that the tire can take the extra heat. M means Up to 81 mph.

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