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From the early days of the automobile until now, tires have seen many technological advancements. Improvements in raw materials and chemical compounds have led to tires that perform more effectively. Whether it is compounds offering better grip in snow and ice or compounds providing improved wet handling, technology continues to enhance tire performance.
Electric cars require special tires for a variety of reasons, tire manufacturer Continental said in a press release Friday. Their tires must handle more weight compared to internal combustion vehicles and deliver more torque to the road when moving away from a stop, the company noted. Because of their near-silent powertrains, tire noise is also more noticeable in electric cars than internal-combustion vehicles, where it is partially masked by engine noise.
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The demands placed on future electric vehicle tires and mileage are of most essential requirements. Tires themselves can have a huge effect on EV range and so can wheels. Multiple tests have shown that swapping out stock low rolling-resistance tires and aerodynamic wheels for aftermarket items can decrease range, although it can also improve handling.
With the advent of electric vehicles and their significant lower propulsion noise emission it is possible to assess the tyre-road noise through cruise-by measurements with an increased accuracy, even at speeds where a combustion engine propulsion system would usually disturb the measurement results.
In order to ensure a high range with one single battery charge, a low rolling resistance between the tyre and the road surface, which leads to less energy dissipation, is advantageous.
The rolling resistance rating provided by the EU tyre label has been used as the primary selection criterion for potential tyres for EVs. The second selection criterion represented the tyre label rating for wet grip, whereas a lower rating implies a shorter braking distance.
In the recent market, Hankook is at the forefront of EV tyre tech. Hankook’s new, dedicated EV tyres feature special compounds, pioneering construction methods and unique tread patterns, all with battery-powered motoring in mind.
Due to the weight of their batteries, the overall weight of the electric vehicle tends to be heavier. As battery technology advances, that weight disparity will diminish, possibly disappearing entirely but today the weight difference is in the 15% to 20% range, depending on the model of the vehicle.
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The Global Electric Vehicle Tire Market can be segmented into following categories for further analysis.
The differences between present-day electric vehicles and traditional, gas-powered vehicles are significant. EVs are generally heavier than their internal combustion engine-equipped counterparts. They generate more torque and less noise.
And EV range is not always comparable to what a tank of gas can deliver, although OEMs are working hard to extend range limits. EVs put more torque onto the road when moving off, and the almost silent powertrain means other sounds such as tire noise become more prominent.
Electric cars have immediate torque, which means they accelerate the moment you press the accelerator. The strong immediate torque of electric cars, on the other hand, might increase wear and tear.
The rubber composition used in EV tyres must have minimal rolling resistance in addition to strong traction. . In recent years a number of companies and inventors have been working on creating airless tires that would be impossible to puncture. Non pneumatic tyres are the tires which are not supported by air i.e. they are airless.
There are high-tech compounds which provide robust connections between the silica and the rubber. This allows an optimal adaptation to varying road conditions, which ultimately improves the tire’s rolling resistance and consumption. To meet the heavy demands of the high performance of electric sports cars, the tire has a reinforced bead with so-called bead-packing technology, as well as high lateral stiffness for precise handling even at high speeds.
Tires are the heart and soul to operational mechanism of the EV at all times throughout its life that contributes to being the least expensive conglomerate part onboard the vehicle.
The EVs tyres need to be technologically advanced and better modified through various requirements being fulfilled at all times. the additional weight of any batteries and electric motor is offset by increasing the load-bearing capacity of the tire carcass, as indicated on most tires by an XL symbol on the sidewall.
Energy losses due to tires are of particular concern to EV manufacturers. With rolling resistance accounting for up to 20% of a vehicle’s energy consumption.
The French Tire Maker, Michelin recently has developed and technologically improvised the tire technology so as to have better noise reduction in the vehicle propulsion.
To further reduce road noise with a compound that’s 20% quieter, thanks to custom-developed polyurethane foam that keeps the unpleasantries out of the cockpit. This tire Technology is completely carbon neutral. Michelin aims to tackle these exact issues of EV operations with the models of e Primacy and the Pilot Sport EV tires, designed for high-performance and sports electric cars.
The Tire Major Continental AG, EV Tires under the product of EcoContact™ 6. It provides a high-tech compound that provides robust connections between the silica and the rubber. This allows an optimal adaptation to varying road conditions, which ultimately improves the tire’s rolling resistance and consumption.
The tire technology ContiSilent™ is a tire noise-reducing technology which is designed to reduce interior noise on all road surfaces and leads to a greater comfort. ContiSilent™ helps reduce interior vehicle noise up to 9 dB(A).
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