Thursday , September 23 2021

Explained: The difference between electric car tires and conventional tires

Electric cars differ from cars with internal combustion engines, not just in terms of environmental performance. The main difference is the weight: they are heavier than traditional cars, so the main task of tire manufacturers is to strengthen the side wall so that it can cope with extra weight. It has an impact on air resistance, so manufacturers try to make it as aerodynamic as possible, thus extending a remote load.

On the other hand, the weight of an electric car only changes for passengers and luggage, which facilitates the task of manufacturers. Cars with internal combustion engines weigh between 50 and 70 kg (depending on the fuel content in the tank) and batteries for electric vehicles always weigh on it.

The pattern of the tires of electric car tires must guarantee a balance between adhesion strength and rolling. Electric cars are criticized for a short distance from a single trip, so this feature is crucial for their practice. The noise emitted by the tires also is a great influence: the electric motor is very quiet, reason why each sound source is recognized in the cabin.

Another aspect is wear. Electric motors instantly reach a huge torque, the tires must make sure that they are transferred to the asphalt as efficiently as possible. For this reason, simple tires mounted on electric cars are getting worse; According to various estimates, this difference can reach 30 percent. This is perhaps the biggest difference between electric and long-term electric car tires.

The external differences, as mentioned above, do not exist, but the most demanding experts would notice one. This is the width of the transverse tires of the tires, since they are narrower in the electric car.

Tires for electric cars

Tires for electric cars

© Archive of the manufacturer

The need for ecology is growing

The tires are designed especially for electric cars nowadays by a small number of manufacturers, but finally they will grow. The situation was similar for 10 to 15 years, when only some manufacturers had special SUV products before the start of a great vehicle boom. Nowadays, all premium and many smaller manufacturers offer special tires for high-end models that have a better weight and provide optimal performance in the control of high-quality cars.

Tires designed for electric vehicles are not the only ones that offer maximum efficiency. The manufacturers are introducing more and more cars with great diameter but narrow. For example, the Renault Scenic standard is equipped with a 20-inch dinner equipped with 195 mm wide tires. Goodyear has summer, universal and winter tires specially designed with a high load rating for this model. Tires with this format have a lower rolling resistance, which reduces fuel consumption. The BMW i3 uses a similar technology: their standard tire sizes are 155/70 R19 and in addition the tires are equipped with 155/60 R20 tires.

"Often we have questions about the size of the wheels or the tires of special electric cars for conventional cars. We do not recommend it. The automakers made the edges and tires sizes for each model, achieving the best economy and performance. the size of the wheels and even installing special economic tires will hardly give better results, "Grinberg said.

For modified cars, modified tires are tested by relatively few manufacturers, but some have already introduced specific products or concepts. Some of the specific features are essential for electric cars and it is very difficult to find the perfect combination, for example, providing a side wall and a fairly solid comfort.

It is strictly forbidden to use the information published by DELFI on other websites, in the media or in other places, or to distribute our material in any way without the consent and, if the consent is received, it is necessary to specify DELFI as a source.

Source link