The speed rating on a tire is a letter code indicating the maximum sustained speed the tire is designed to handle safely. You will find it at the end of the tire size string on the sidewall — for example, in 225/50R17 94H, the H is the speed rating. Here is what every letter means and why it matters.
Speed rating chart — what each letter means
S rated: maximum 112 mph. Common on minivans, family sedans, and light trucks where top-speed performance is not a priority.
T rated: maximum 118 mph. Common on economy sedans, minivans, and light trucks.
H rated: maximum 130 mph. The most common rating on mainstream passenger cars — sedans, crossovers, and many SUVs.
V rated: maximum 149 mph. Found on sport sedans, performance crossovers, and near-luxury vehicles.
W rated: maximum 168 mph. Found on performance vehicles and sports cars where sustained high-speed stability is a design requirement.
Y rated: maximum 186 mph. Ultra-high performance and exotic vehicles.
ZR or (Z): a category above V, covering W and Y. The parenthetical (Z) in a tire size like 225/45ZR18 means the tire exceeds V-rated performance. Never substitute a V for a Z-rated tire on a ZR-spec vehicle.
Why the speed rating matters beyond top speed
The speed rating is not just about how fast you can drive. It reflects the tire compound and construction quality — a higher-rated tire handles heat buildup differently and has a stiffer, more responsive structure. An H-rated tire on a vehicle that specifies V-rated tires will feel different in handling and stability even at normal legal highway speeds.
The speed rating also affects handling characteristics, response to cornering forces, and heat dissipation under sustained load. Never install tires with a speed rating lower than what your vehicle manufacturer specifies — you lose safety margin and handling predictability.
How to find and verify your speed rating
Your vehicle required speed rating is listed on the tire placard in the driver door jamb and in the owner manual. The speed rating on the replacement tire must match or exceed the OEM specification.
You can install a higher-rated tire than specified — for example, V-rated tires on a car that specifies H. You cannot install a lower-rated tire (H where V is required). Going higher adds minor cost; going lower sacrifices safety design margin.
Frequently asked
What does H mean on a tire?
H-rated tires are rated for a maximum sustained speed of 130 mph. H is the most common speed rating on mainstream passenger cars, sedans, crossovers, and family SUVs.
Does tire speed rating affect daily driving?
Indirectly yes. A higher speed rating indicates a stiffer construction and compound that affects handling and heat management — not just top speed. Always match or exceed your vehicle speed rating spec for the full safety design margin.
Can I put V-rated tires on an H-rated car?
Yes — installing a higher speed-rated tire than specified is fine and has no downsides. You cannot go lower. V on an H-spec car is perfectly acceptable.
Keep reading
Last updated 2026-06-27. General guidance only — confirm specifics with a local shop for your exact vehicle.