EU Tyre Label
What is the EU Tyre Label?
The EU Tyre Label was introduced to improve safety, promote fuel efficiency, decrease noise levels and give buyers what they need to make informed decisions. It is part of a wider EU Commission Plan to reduce energy consumption by 20% by 2020.
How to read the EU Tyre Label
The tyre labelling features easy-to-understand pictograms that provide information on the following three essential aspects of a tyre’s performance.
1. Wet grip
Secure grip in wet conditions is crucial for safe driving. The wet grip rating indicates how well the tyre will perform in wet conditions, with performance graded from class A down to E. A high grade means short braking distances on wet roads.
2. Fuel efficiency
Depending on the tyre’s rolling resistance, its fuel efficiency will range from class A (denoting the best fuel economy) all the way down to class E. Fuel consumption plays an important role from an economic and ecological point of view. This is because low fuel consumption has a positive effect on the carbon footprint of the vehicle, and of heavy-duty vehicles in particular.
3. Noise level
This is the external rolling noise generated by the tyre, measured in decibels. The label shows the noise level rated in classes from A down to C.
In addition to the standard label, there are also pictograms − if applicable − relating to performance in severe snow conditions (3PMSF) and/or grip in icy conditions (passenger car/C1 tyres only).
The snow grip pictogram (3PMSF) will be shown for winter and all-season tyres tested under defined winter conditions and that deliver the required severe snow performance.
The ice grip pictogram will be shown for winter tyres with outstanding ice performance confirmed by a defined ice grip test. These tyres are specifically designed for road surfaces covered with ice and compact snow, and should only be used in very severe climate conditions (e.g. cold temperatures in the Nordics). Using ice grip tyres in less severe climate conditions (e.g. wet conditions or warmer winter temperatures) could result in suboptimal performance, in particular for wet grip, handling and wear.
How is rolling resistance linked to fuel efficiency?
As your tyres rotate, they also flex towards and away from the surface of the road, leading to a loss of energy. The amount of energy lost correlates with the rolling resistance of the tyre.
Tyres with low rolling resistance are the most energy efficient. That means it takes less power – and therefore less fuel – to move the vehicle.
Since tyres can account for between 20% and 30% of a vehicle’s fuel consumption, choosing new tyres that are energy efficient will result in direct fuel cost savings.
Tips for efficient driving
For improved fuel efficiency and greater road safety consider the following factors:
- Environmentally aware driving can reduce fuel consumption significantly;
- Check your tyre pressures regularly; low pressure increases fuel consumption and affects braking performance;
Always maintain a safe distance from the vehicle in front;
- Check for signs of uneven wear on the tyres, especially along the edges of the front tyres. Uneven wear could indicate a tracking or suspension problem that could increase fuel consumption and cause your tyres to wear more quickly;
- Avoid harsh acceleration and deceleration; this increases both fuel consumption and tyre wear;
- Follow the vehicle manufacturer’s maintenance recommendations;
- Extra weight increases fuel consumption; regularly clear out non-essential items from your car.
Rolling circumference on tyres
What is permitted?
The rolling circumference is the exact distance your tyres will travel in one revolution – and therefore a critical parameter for working out the tyre dimensions. All the more important, then, for you to be able to calculate the tyre size!
Calculating the tyre size: For new tyre sizes, this is essential
Swapping tyres isn't a problem for most drivers. At least, not if the old and new tyre sizes are the same. However, that is not always the case. Why? The reasons can vary enormously and relate mostly to the driver. For example, you want a larger tyre size to stand out on the roads. However, the reason is often much more mundane. For example, when you buy a new car and wonder if it can use your old tyres. Whatever it is you have in mind, these examples all have one thing in common: a new tyre size also means that the rolling circumference changes. Unintended consequences cannot be ruled out. The reason is that if the rolling circumference differs too much from the standard tyres, it can lead to problems at MOT inspections. So, what is permitted?
This question cannot be answered the same way for everyone. Ultimately, tyre sizes differ from car to car. To find out the tyre size for your car, often all you have to do is look at the sidewall of your tyres. This information is also provided on the inside of the driver’s door. If not, it will be entered by the technical inspector in your car documents. However, these details do not tell you the actual tyre size of your car tyres. However, you can also work it out using this formula.
Rolling circumference affects the speedometer
A difference in the tyre size will also change the rolling circumference. But did you know that it will also affect the speedometer? The speedometer works out the speed of a car through the wheel revolutions. So, if you switch to larger tyres, the speed displayed on your speedometer will be less than the actual speed at which you are travelling. Smaller tyres, on the other hand, result is a higher speed on the speedometer. The display may show 10 per cent +4 km/h more than the actual speed of the vehicle, and not one km/h more. If the difference is too great, the speedometer will have to be adjusted.
Check the rolling circumference of the tyres you have now and then for the tyres you want with the help of our formula. Are you still looking for the tyres you want? Discover a wide selection at Uniroyal.
Tyre load index
What does this mean?
The tyre load index (also known as the load capacity index, tyre load rating or tyre hire load index) identifies the maximum load capacity of a tyre, i.e. the absolute carrying capacity. You will find this information on your tyres. But how is this number calculated?
Tyre load capacity: Calculator for the maximum load
If you would like to go on holiday with a packed car or help someone move, it is important to know how much weight your tyres can carry. A tyre is not designed for loads of any size. That's why it is important that you know and do not exceed the load capacity of your tyres. The tyre load capacity is not so well known. The figure indicates the maximum possible load of a tyre. To calculate the load your rims and car can carry, in theory you can just take a look at your vehicle registration or the tyre sidewall. You will find the tyre labelling there.
The two- to three-digit number in the penultimate position stands for the tyre load capacity of your tyres. However, these indicators do not reveal anything about the permissible load in kilograms. So this is a useless indicator in everyday life. It is easier to calculate the tyre load rating using our load index table for tyres. There you can find the maximum load in kilograms for the respective rating. For a tyre code with the digits 195/55 R16 87 V, the 87 in the penultimate position is relevant: This represents a tyre load rating of 87, i.e. a load capacity of 545 kilograms.