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Tyre Speed Rating chart symbols with speed S T U H P W

Tire speed ratings are an essential aspect of your vehicle’s performance and safety. Whether you’re driving a sports car or an SUV, understanding tire speed ratings ensures you choose the right tires for your driving needs. In this article, we will explain tire speed ratings, why they matter, and provide a comprehensive table summarizing common speed ratings.

check speed rating on the tyre

How to Read a Tire Speed Rating

Table of Contents

Toggle
  • How to Read a Tire Speed Rating
  • What Is a Tire Speed Rating?
  • Why Is Tire Speed Rating Important?
    • 1. Safety
    • 2. Performance
    • 3. Compatibility
    • 4. Regulations
    • ZR Designation
  • Tips for Choosing the Right Tire Speed Rating
    • 1. Match the Vehicle’s Requirements
    • 2. Consider Driving Habits
    • 3. Don’t Overpay for Unnecessary Ratings
    • 4. Consult an Expert
  • Frequently Asked Questions (FAQs)
    • 1. Can I use tires with a lower speed rating than recommended?
    • 2. Do winter tires have different speed ratings?
    • 3. Does a higher speed rating mean better quality?
    • 4. Can mismatched speed ratings affect my vehicle?

The speed rating is typically the last character in the tire size code. For instance, in “P215/65R15 95H,” the “H” represents the tire’s speed rating.

Rating Maximum Speed (km/h) Maximum Speed (mph) Common Usage
N 140 87 Temporary spare tires
Q 160 99 Winter tires
S 180 112 Family sedans, vans
T 190 118 Family sedans, SUVs
U 200 124 Performance sedans
H 210 130 Sports sedans, coupes
V 240 149 High-performance vehicles
W 270 168 Ultra-high-performance cars
Y 300 186 Supercars, exotic vehicles
(Y) Above 300 Above 186 Ultra-high-performance cars
ZR 300 km/h Above 186 mph Ultra-high-performance cars

Tire Speed Rating Guide

 

SPEED SYMBOLS
Symbol Speed Speed (km/h) Speed (mph)
A1 5 3
B 50 31
C 60 37
D 65 40
E 70 43
F 80 50
G 90 56
J 100 62
K 110 68
L 120 75
M 130 81
N 140 87
P 150 94
Q 160 100
R 170 106
S 180 112
T 190 118
U 200 124
H 210 130
V 240 149
W 270 168
Y 300 186

What Is a Tire Speed Rating?

A tire speed rating indicates the maximum speed a tire can handle safely under optimal conditions. This rating is represented by a letter on the tire sidewall, following the load index. For example, in a tire marked “225/45R17 94V,” the “V” denotes the speed rating.

Why Is Tire Speed Rating Important?

1. Safety

Using tires with a speed rating lower than your vehicle’s requirements can lead to overheating and potential blowouts at high speeds.

2. Performance

High-speed-rated tires typically offer better handling, cornering, and braking performance due to their construction and materials.

3. Compatibility

Your vehicle’s manufacturer specifies the required speed rating to match its performance capabilities. Always refer to your owner’s manual for guidance.

4. Regulations

In some regions, it is mandatory to use tires with a minimum speed rating to comply with safety regulations.

ZR Designation

Tires having a maximum speed capability over 149 MPH may have “ZR” in the size designation. Tires with a maximum speed capability over 186 MPH are required to include “ZR” in the designation. Below are examples of tire sizes with a “ZR” speed rating.

ZR DESIGNATION

EXAMPLES
Tire Designation Maximum Speed
P275/40ZR17 93W 270 km/h (168 mph)
P275/40ZR17 93Y 300 km/h (186 mph)


Tips for Choosing the Right Tire Speed Rating

1. Match the Vehicle’s Requirements

Always select tires with a speed rating that meets or exceeds your vehicle manufacturer’s recommendations.

2. Consider Driving Habits

If you frequently drive at high speeds on highways, opt for tires with higher speed ratings for enhanced stability and safety.

3. Don’t Overpay for Unnecessary Ratings

While high-speed-rated tires may offer better performance, they may also wear out faster and cost more. For city driving, standard-rated tires are sufficient.

4. Consult an Expert

If unsure, seek advice from a tire professional or refer to your vehicle’s manual.

Frequently Asked Questions (FAQs)

1. Can I use tires with a lower speed rating than recommended?

It is not advisable as it may compromise safety and performance, particularly at high speeds.

2. Do winter tires have different speed ratings?

Yes, winter tires typically have lower speed ratings because they are designed for traction rather than speed.

3. Does a higher speed rating mean better quality?

Not necessarily. Higher ratings indicate better performance at high speeds but may not be relevant for all driving conditions.

4. Can mismatched speed ratings affect my vehicle?

Yes, using tires with varying speed ratings can lead to uneven performance and handling issues.

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raju ginni
raju ginni

Hi, am (rajuginni). writer since 2012, passionate about Knowing new things sharing the same, after engine failure, i became bike enthuaist , you may follow me yoututbe.

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