Tire Speed Rating Chart: Every Letter from A1 to (Y)

Last updated on September 19th, 2026

A tire speed rating is a letter or symbol that identifies a tire’s rated speed capability under specified test conditions. It normally appears at the end of the tire’s service description, such as the V in 205/55R16 91V.

The Chart below lists tire speed ratings from A1 through Y in both miles per hour and kilometers per hour. It also explains Z, ZR, and (Y), how to find the correct specification for your vehicle, and whether you can use a higher or lower rating.

Quick Answer: Common passenger-tire speed ratings include S (112 mph), T (118 mph), H (130 mph), V (149 mph), W (168 mph), and Y (186 mph). These values describe tested tire capability—not recommended driving speeds. For replacement tires, check the original-equipment specification in the owner’s manual, tire placard where listed, or the vehicle manufacturer’s fitment information.

Complete Tire Speed Rating Chart

Use this chart to convert a tire’s speed symbol into its corresponding rated speed in miles per hour and kilometers per hour.

What Does (Y) Mean?

The parentheses are important. A standard Y rating represents 186 mph or 300 km/h, while (Y) indicates capability above that value. Consult the tire manufacturer for the exact approved capability of a particular tire and size.

Safety note: A speed rating represents tire capability under specified test conditions. It is not a recommended driving speed and does not account for every real-world factor, including inflation pressure, load, tire condition, temperature, vehicle limitations, road conditions, or legal speed limits.

“Tire speed rating” and “tyre speed rating” refer to the same standardized marking; the spelling varies by region.

What Is a Tire Speed Rating?

A tire speed rating is a standardized letter or symbol that identifies its rated speed capability under specified test conditions, including applicable load and inflation requirements.

For example:

205/55R16 91V

In this service description:

• 91 is the load index.
• V is the speed rating.
• V corresponds to 149 mph or 240 km/h.

The rating is not an overall tire-quality score. It does not independently measure wet braking, snow traction, comfort, tread life, road noise, or fuel efficiency.

A higher rating provides a higher rated-speed capability, but it does not automatically make the tire a better choice. A suitable replacement must meet the vehicle’s complete requirements for size, load capacity, speed rating, construction, and fitment.

How to Read a Tire Speed Rating on the Sidewall

The speed rating normally appears at the end of the tire’s service description, immediately after the load index.

Consider this example:

205/55R16 91V

The final letter, V, is the speed symbol. The number immediately before it, 91, is the load index. In this example, load index 91 represents a maximum load capacity of 615 kg or 1,356 pounds per tire under the applicable conditions.

Read the load index and speed symbol together because a replacement tire must satisfy both requirements.

Related markings: P, LT, and XL are separate from the speed rating. P identifies a P-metric tire, LT identifies a light-truck tire, and XL indicates an Extra Load version where applicable.

Where to Find the Correct Speed Rating for Your Vehicle

The tire sidewall shows the rating of the tire currently installed. However, it may not represent the vehicle’s original specification if a previous owner or installer changed the tires.

Use these sources when selecting replacements:

Start with the manufacturer’s original specification rather than relying only on the currently fitted tire. If the required speed rating is not clearly listed, confirm it through the vehicle manufacturer’s fitment information.

What Do Z, ZR, W, Y, and (Y) Mean?

Z, ZR, W, Y, and (Y) do not all work in the same way. W and Y provide specific fixed values, while Z and ZR require the complete tire marking to be interpreted.

What Does Z Mean?

Z was introduced as a high-speed designation before the more precise W and Y ratings were established. It generally indicates capability above 149 mph or 240 km/h, but Z alone does not reveal the tire’s exact rated maximum.

Modern high-speed tires normally include a more specific W, Y, or (Y) symbol in the service description.

What Does ZR Mean?

ZR appears within the tire-size designation. Z identifies a high-speed category, while R identifies radial construction.

Consider:

245/40ZR19 98Y

• 245/40ZR19 is the tire size and construction designation.
• 98 is the load index.
• Y is the specific speed symbol.
• Y corresponds to 186 mph or 300 km/h.

ZR should not be treated as a fixed speed rating. Check the symbol following the load index to determine the tire’s specific rated capability.

What Is the Difference Between Y and (Y)?

A standard Y rating represents 186 mph or 300 km/h. When the service description is placed in parentheses as (Y), it indicates capability above that value.

The parentheses do not reveal the exact maximum capability. Check the tire manufacturer’s specification for the particular model and size.

Common Tire Speed Ratings Explained

Most passenger-car, SUV, and crossover owners are more likely to encounter S, T, H, V, W, or Y than the lower symbols in the complete chart.

S Tire Speed Rating: 112 mph (180 km/h)

An S-rated tire has a rated speed capability of 112 mph or 180 km/h. The S symbol appears in various road-use applications where this category meets the vehicle manufacturer’s requirements.

The symbol does not independently indicate comfort, durability, traction, or value.

T Tire Speed Rating: 118 mph (190 km/h)

A T-rated tire has a rated speed capability of 118 mph or 190 km/h. It is commonly found among touring and all-season tires intended for everyday passenger-vehicle use.

T describes the tire’s speed category—not its wet grip, snow traction, comfort, or expected mileage.

H Tire Speed Rating: 130 mph (210 km/h)

An H-rated tire has a rated speed capability of 130 mph or 210 km/h. Although H appears out of alphabetical order, it represents a higher speed category than T and U.

H-rated tires are used across numerous passenger-car, crossover, SUV, and performance-oriented applications.

V Tire Speed Rating: 149 mph (240 km/h)

A V-rated tire has a rated speed capability of 149 mph or 240 km/h. It frequently appears in performance-oriented passenger-car and crossover fitments, although it is not limited to one type of vehicle.

Actual handling, comfort, tread life, and weather performance depend on the specific tire model.

W Tire Speed Rating: 168 mph (270 km/h)

A W-rated tire has a rated speed capability of 168 mph or 270 km/h. It is a specific speed symbol and should not be confused with the broader ZR designation within a tire size.

W represents a higher rated-speed category than V, but it does not automatically make every W-rated tire better than every V-rated tire.

Y Tire Speed Rating: 186 mph (300 km/h)

A Y-rated tire has a rated speed capability of 186 mph or 300 km/h. It is used in various high-performance applications, but actual fitment depends on the manufacturer’s complete specification.

Do not confuse Y with (Y), which indicates capability above 186 mph or 300 km/h.

S vs. T vs. H vs. V vs. W vs. Y

These are broad descriptions, not fixed vehicle classifications or replacement recommendations. The required rating is determined by the vehicle’s complete specification.

Speed Rating vs. Load Index

Speed rating and load index appear together in a tire’s service description, but they measure different capabilities.

Using 205/55R16 91V as an example:

• 91 is the load index.
• V is the speed rating.

A tire can have the correct speed rating but insufficient load capacity. The reverse is also possible: a tire may carry enough load but have a lower speed rating than the vehicle requires.

A higher value in one category does not compensate for an inadequate value in the other. Check both specifications along with tire size, construction, and fitment requirements.

For the complete weight capacities associated with each load-index number, see the Tire Load Rating Chart.

How Speed Rating Can Affect Tire Performance

A speed rating can be related to tire construction, but it should not be used as a shortcut for predicting every aspect of performance.

Handling and Stability

Some higher-speed tires use construction designed to limit deformation and maintain stability at higher speeds. This can contribute to more responsive steering.

However, handling also depends on compound, tread pattern, sidewall design, tire size, inflation pressure, vehicle suspension, alignment, and road surface.

Comfort and Noise

Some performance-focused tires may feel firmer, but speed rating alone does not determine ride quality.

Aspect ratio, sidewall construction, tread pattern, compound, inflation pressure, suspension, and road surface can make two tires with the same speed rating feel very different.

Wet and Winter Performance

Speed rating does not measure wet braking, hydroplaning resistance, snow traction, or ice grip. These characteristics depend more heavily on tread design, compound, siping, tire category, and model-specific testing.

Tread Life and Value

Two V-rated tires can have different compounds, warranties, intended uses, and expected mileage. Inflation, alignment, rotation, driving habits, vehicle load, temperature, and road conditions also affect wear.

After meeting the vehicle’s specifications, compare individual tire models rather than using speed rating as a substitute for performance testing.

Can You Use a Higher or Lower Speed Rating?

A replacement tire should normally meet the speed rating specified by the vehicle manufacturer. A higher rating may be acceptable when the complete specification matches, but a lower rating should not be assumed equivalent.

Using a Higher Rating

A higher-rated tire may be suitable when it provides the correct:

• Size
• Load capacity
• Construction
• Wheel fitment
• Original-equipment characteristics
• Intended application

Higher is not automatically better. The replacement may cost more or provide different comfort, noise, tread-life, and weather-performance characteristics.

Using a Lower Rating

Do not choose a lower rating merely because:

• You drive slowly
• You rarely use highways
• The lower-rated tire costs less
• Both tires have the same physical size

A matching size does not make two tires equivalent. Confirm any lower-rated alternative through the owner’s manual or manufacturer guidance.

Can You Mix Different Speed Ratings?

Matching tire size, load index, speed rating, construction, and model at all four positions generally provides the most consistent vehicle response.

If different ratings are being considered because only one or two tires need replacement, consult the vehicle and tire manufacturers. Appropriate placement may depend on the drivetrain, existing tires, and vehicle configuration.

The vehicle must be operated within the limitations of its lowest-rated installed tire, but that does not mean a mixed fitment is recommended or approved.

Winter Tires, Cold Weather, and Speed Ratings

Winter capability and speed rating measure different characteristics.

A winter tire may carry a lower, equal, or higher speed rating than the vehicle’s warm-weather tires. Its snow and ice performance comes primarily from its compound, tread design, and winter-service qualification—not its speed symbol.

Can Winter Tires Have a Lower Rating?

Some winter tires have a lower rating than the vehicle’s original all-season or summer tires. This may be acceptable in manufacturer-approved applications, but it is not a universal rule.

Confirm that the winter tire’s size, load capacity, construction, and fitment are appropriate, and observe its lower rated-speed limitation.

Does 3PMSF Indicate Speed Rating?

No. The Three-Peak Mountain Snowflake (3PMSF) symbol indicates severe-snow-service qualification. It does not identify rated speed.

For example:

225/65R17 102H + 3PMSF

The 3PMSF symbol does not change the H rating.

Does Cold Weather Change the Rating?

Cold weather does not change the speed symbol molded into the tire. An H-rated tire remains H-rated.

Temperature can still affect inflation pressure, compound behavior, traction, and overall performance. Check tire pressure regularly and use tires appropriate for the expected conditions.

Common Tire Speed Rating Mistakes

Always evaluate tire size, load capacity, speed rating, construction, and manufacturer requirements together.

How to Choose the Correct Tire Speed Rating

Start with the vehicle manufacturer’s specification rather than choosing the highest rating available.

1. Check the Placard, Manual, and Manufacturer Information

Look for the listed:

• Tire size
• Inflation pressure
• Load requirements
• Speed requirements
• Construction
• Approved alternatives

The information available on the vehicle placard varies, so use the owner’s manual or manufacturer’s fitment information when necessary.

2. Read the Complete Tire Marking

Do not stop after matching the physical size.

A tire marked 205/55R16 is not automatically suitable for a vehicle requiring 205/55R16 91V. Confirm the load index, speed rating, and construction as well.

3. Check Load and Speed Requirements Separately

A higher load index does not compensate for an inadequate speed rating. A higher speed rating does not compensate for insufficient load capacity.

Both must be appropriate.

4. Confirm Special Requirements

Depending on the vehicle, these may include:

• XL or reinforced construction
• Run-flat capability
• P-metric or LT-metric construction
• Original-equipment approval markings
• Severe-snow-service capability
• Staggered front and rear fitments

5. Compare Specific Tire Models

After confirming fitment requirements, compare:

• Wet and dry performance
• Snow and ice capability
• Comfort and noise
• Tread life
• Warranty
• Rolling resistance
• Price

Final Replacement Checklist

Simple rule: Match the required size, load capacity, speed rating, and construction before comparing comfort, traction, tread life, warranty, and price.

Frequently Asked Questions

Why Is H Located Between U and V?

Speed-rating symbols were not created as one continuous alphabetical sequence. H was introduced under an earlier system and retained as additional categories were added.

Its rated speed of 130 mph or 210 km/h places it above U and below V.

What Speed Rating Is Required for Highway Driving?

There is no single rating for every highway-driven vehicle. Use the rating specified by the vehicle manufacturer, even when several lower categories exceed normal legal highway speeds.

Highway suitability also depends on load capacity, construction, tire condition, inflation pressure, and complete vehicle fitment.

What Happens If You Exceed a Tire’s Speed Rating?

Operating beyond a tire’s rated capability can increase heat and structural stress. This may accelerate degradation or contribute to tread separation, pressure loss, or tire failure.

Damage, wear, underinflation, overloading, high temperatures, and prolonged operation can reduce safety margins even below the rated speed.

Does a Tire’s Speed Rating Change as It Wears?

The molded symbol remains the same, but the tire’s condition affects whether it can perform safely.

Age, tread wear, puncture repairs, impact damage, cracking, underinflation, overloading, or internal damage can make a tire unsuitable for high-speed operation. The original rating is not a guarantee that a worn or damaged tire remains capable of safely operating at its stated value.

Final Takeaway

A tire speed rating identifies the tire’s rated speed capability under specified conditions. Use the chart to decode the symbol, but use the owner’s manual and vehicle or tire manufacturer guidance to determine what your vehicle requires.

Confirm the correct size, load capacity, speed rating, and construction together. A higher rating is not automatically better, while a lower rating should not be considered an equivalent substitute unless an approved alternative applies.

For Z, ZR, Y, and (Y), read the complete service description rather than relying on one letter. After confirming fitment, compare specific tire models for braking, traction, comfort, noise, tread life, warranty, and price.

Related Tire Speed Rating Comparisons

• H vs. T Tire Speed Rating
• V vs. H Tire Speed Rating
• V vs. W Tire Speed Rating
• W vs. Y Tire Speed Rating

Authoritative References

• NHTSA Tire Safety
• U.S. Tire Manufacturers Association
• Your vehicle owner’s manual and original-equipment tire specifications