Tire Speed Rating Explained: What the Letters Mean

Every tire has a speed rating indicated by a letter on the sidewall, typically the last character in the service description (for example, the "H" in 225/65R17 102H). This rating tells you the maximum sustained speed the tire is designed to handle safely.

Common Speed Ratings

S (112 mph) is common on sedans and minivans. T (118 mph) appears on family sedans, SUVs, and light trucks. H (130 mph) is standard on sport sedans and upscale vehicles. V (149 mph) is found on sports cars and performance sedans. W (168 mph) and Y (186 mph) are reserved for high-performance and exotic vehicles.

Does Speed Rating Matter if You Never Drive That Fast?

Yes, and for reasons beyond top speed. Higher speed rated tires use stiffer compounds and construction that improve handling response, braking performance, and cornering grip at all speeds. A V-rated tire will feel noticeably sharper in turns than a T-rated tire of the same size, even at city speeds.

Can You Change Speed Ratings?

You should never install tires with a lower speed rating than your vehicle's original equipment specification. Going higher is acceptable and may improve handling, though ride comfort may be slightly firmer.

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