Tyre speed rating chart

What is the tyre speed rating? How do tyre ratings work? It describes the top speed for which a tire is certified. In this instance, denotes the ability of the.

Consult the tire manufacturer for maximum speed when there is no service description. This is good information to have for a number of reasons, some of which actually include the likelihood of you ever being able to sustain even the lowest of speeds that passenger car tires are rated for.

The speed rating code is semi-alphabetic and goes like this: B: kph mph. As seen in the tyre speed rating chart below, V corresponds to 1mph. Therefore, tyres with this speed rating should not be driven over 149mph. The tyre speed ratingis the maximum permitted speed at which the car can move with the specified tyre type under the maximum load defined by the tyre load index.

These two parameters are dependent on each other and they must be always taken into account when fitting tyres to a car. This is actually the top speed of a tyre known as ‘tyre speed rating ’. Every alphabet has got a speed hidden behind it. Tyre Speed Rating Chart The chart shows a list of speed ratings, along with the corresponding speeds they represent.

Remember, the speeds are test speeds, not recommended speeds. It is always represented by a letter - in the following example the tyre speed rating is "V". Speed ratings are based on tests in which engineers run the tyre at 6. Z-rated high-performance tyres are rated for speeds in excess of 149mph.

Confusingly, W-rated tyres are rated at a higher speed in excess of 168mph. Y-rated tyres are rated in excess of 186mph. See the full list below.

Tyre speed ratings should be matched to the official top speed of your car. The table below shows what each letter is rated at. ZR indicates that the tyre can handle speeds superior to 1MPH It includes the category W and Y. Tire speed ratings range from A (the lowest) to Y (the highest).

But the chart is not completely in alphabetical order. For example, H is between U and V, with the common perception that H stood for “high performance” at one time. As manufacturers continue to add speed to their vehicles, tire speed ratings evolve to match the speeds.

About Tyre Speed Ratings. Depending upon the different width, height, diameter and loa tyres are provided with relative speed ratings. When Is Speed Rating.

The SPEED SYMBOL indicates the maximum speed at which the tyre can carry a load corresponding to its Load Index under service conditions specified by Avon Tyres. These speeds are shown in Table and apply to tyres when in good condition, inflated to the correct pressure, operating within their specific load capacity and fitted to the correct size rim. Being aware of your tyre speed rating is vitally important for knowing how fast you’re able to safely travel on your tyres.

Once the highest speed rating a tire could have, “V” used to represent a maximum of 1mph (2kph) or more. Nowadays, it means 1mph but no higher. A relatively new addition to the speed rating chart, tires with speed rating “W” can achieve a maximum sustained speed of 1mph (2kph). The Speed Rating Symbol indicates the speed at which the tyre can carry a load shown by the Load Index.

It’s important to fit a tyre that matches or exceeds your car’s top speed.