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Tyre Speed Rating-Understanding the Symbol

Tyre Speed Rating-Understanding the Symbol

Tyre Speed Rating Symbol Explained:

The speed rating indicates the maximum speed at which the tyre can be safely driven. Speed ratings range from L (120 Kmph) up to Y (300 kmph). High-performance supercars such as Ferraris and McLarens sometimes have Z-rated tyres, although these are very specialist. These speed ratings exist to ensure the safety of your tyres.

At higher speeds, the wheels turn faster and more heat is generated. So, it’s important that the chosen tyre can cope with this extra heat, and running a tyre with too low a speed rating for the car risks the failure of the tyre at high speeds.

A tyre’s speed rating is the top speed it can maintain under its approved load capacity. For example, a tyre with a speed rating of ‘Y’ has a top speed of 300 kmph.

Your tyre’s speed rating can be found in the tyre’s sidewall data and is always referenced in the form of a letter, usually after the wheel diameter. In the image below you can see the tyre has a diameter of 87 inches and a speed rating of ‘V’.


How to choose the right Tyre for your Car – Tyre Selection Guide

How to choose the right Tyre for your Car – Tyre Selection Guide

Most of us have a tendency to choose a car loaded with safety features. However, we often neglect the quality of the tyres we use. You must not underestimate their importance. They are the only link between your car and you, Whether it is acceleration, braking, handling or steering, the quality of your driving experience is directly related to the quality of tyres you use, So, why to compromise with your car tyres?

These days, most vehicles possess tubeless tyres as standard so that you can replace the worn out tyres with the new ones. The various companies offer tubeless tyres. This blog acts as a tyre selection guide which contains the basics of selecting the right and the best set of tyres for your car.

Tyre Selection Criteria 1 – Tubeless or Tube-type Tyres?

As far as this question is concerned, most people will advise you to go for tubeless tyres.  Not only they are safer but also more advanced. They have an edge over tube-type tyres as there is no requirement for having alloy wheels to use tubeless tyres. However, the steel wheels which you may use must be rust-free for attaining the best results. In fact, you can buy a new set of steel wheels as they are relatively cheaper and also have an anti-rust coating on the inside part.

The Preferred Size

Size of the tyre is probably the most important but controversial part of selecting a tyre as there may be a lot of different opinions on the same. Suppose, if the size of the tyre is represented by 205/55 R 15, it can be interpreted in the following manner:

205 (mm): It is the width of the tyre on the tread.

55 (%): It is the height of the sidewall. It is written as a percentage of the tread width.

R (Radial): This shows the tyre is of radial construction like most tyres these days.

15 (Inches): The rim diameter of the wheel

Since this article is effectively on tyre selection guide, it is suggestive of three broad things to keep in mind while selecting the right size for the tyre:

Rim Size: You have to select the tyre size made for exactly the size of rim you wish to mount the tyre on. If the rim is too large, it will reduce the sidewall height and thus lower the sidewall flex when cornering. Too small rims will also have an adverse impact on the riding quality.

Tread Width: If you plan to raise the width by 0-20 mm from the stock size, it is within the realm of acceptance. Besides this, tyre compound also plays a significant role in gripping. Tyre width has a corresponding wheel width which suits the tyre. Hence, increasing the tyre width must not let the tyre touch the wheel wells of your car.

Sidewall heights: While selecting your sidewall profile, you should keep the diameter same as what is recommended by the manufacturer of your vehicle.

Tyre Selection Criteria 2 – Tread Pattern

The correct tread design is extremely useful, particularly when you drive in wet conditions. It is imperative that the tyre track design viably channels out water far from the contact fix between the tyre and the street. The street clamour produced likewise relies on how much air is caught and released from between the track channels.

This tyre selection guide discovers three sorts of treads – Conventional, Uni-Directional and Asymmetric. An ordinary tread design enables you to mount it on the edge on either side and it tends to be run in either direction. The Uni-Directional tread is accompanied by a devoted marking which means rotating in a specific direction. Such tyres more often than not include ‘A’ or ‘V’ type design arrangement is more useful in water diverting and controlling tyre commotion. The Asymmetric pattern tyre has two sidewalls, confronting outwards and inwards. This tyre is a decent decision as it offers a mix of a decent hold on wet surfaces just as taking care of corners at a rapid speed.

Tyre Selection Criteria 3 – Quality of the Tyre

This tyre selection guide focuses on the rubber compound which is being utilized to produce the tyre, as this component decides the tyre’s footing and treadwear attributes. It is likewise imperative that you check the date of production, it is normally stepped with a four-digit DOT code on its sidewall which signifies the week (initial 2 digits) and year (last 2 digits) of making. Tyres that have been lying in stock for over a year are not prescribed. Guarantee that you put resources into a decent set of tyres from a reputed producer with the point by point terms for a guarantee.


Choosing the right tyre may be a daunting task when there are so many brands and types are available at so many different prices. This blog has provided an effective tyre selection guide which aims to be a lot focused, specific and technical. If you clearly analyse the factors such as tyre size, tread pattern, quality check etc of the tyre, you will leave no stone unturned and will select the best tyre for your car.