Sailun expands Atrezzo ZSR2 and ZSR2 EV tyre ranges

Sailun Tyre Group is expanding its range of Atrezzo ZSR2 and ZSR2 EV tyres. By the end of the year, 14 new tyre dimensions ranging from 16 to 20 inches in diameter, a total of 54 sizes will be introduced. The majority of the sizes are concentrated on vehicle models with R19 and R20 wheel sizes. Corresponding tyre dimensions for the fast-growing SUV segment will follow in spring 2024.

“[We are]…decisively expanding our comprehensive tyre expertise based on EcoPoint3 tyre technology to the field of e-mobility. Six Atrezzo ZSR2 EV sizes for 19- and 20-inch wheels have also been developed in line with the requirements of e-mobility for models such as the Polestar 2, the Tesla Model Y and the VW ID.4,” explained Stephan Cimbal, director marketing Sailun Group Europe.

As well as the normal wet and drive performance characteristics you would expect, Sailun engineers reportedly took particular account of the requirements in the field of e-mobility. Specifically, they considered how, when operating electric motors, almost no drive noise occurs, which makes the rolling noise of the tyres more prominent. The new tyre dimensions of the Atrezzo ZSR2 EV offer drivers “a quiet and pleasant ride at all speeds”.

As a result of the use of EcoPoint3 technology, tyre contact with the road is also optimized. Whatever the vehicle propulsion system, this means “longer and more sustainable mobility without compromising performance”. The same applies to e-mobility applications where the weight of the battery means that electric vehicles are up to 30 per cent heavier than vehicles with internal combustion engines, which often leads to uneven tyre wear. That’s why the new tyres offer an asymmetric tread pattern, which “ensures optimum and balanced downforce even at high speeds, as well as first-class cornering and handling”.

In addition, convex entry ribs and wide water drainage grooves ensure the best wet grip and aquaplaning safety. Optimized tread blocks support outstanding performance at high speeds. Furthermore, a stiff centre rib is designed to increase stability and better ground contact, while the wide grooves offer “faster water drainage”

Sailun reportedly placed particular emphasis on high abrasion resistance during development. Thus, the treads and the special rubber compound of the Atrezzo ZSR2 are designed for the high torque and above-average acceleration forces of electric cars. To also address the greater tyre slip caused by the high torque of electric vehicles, the stiffness of the tread blocks has been optimized using extended outer shoulder blocks for maximum road contact.

“Our engineers and developers know that electric vehicle tyres wear about 20 per cent faster than those of internal combustion engine vehicles when worn unevenly,” Stephan Cimbal points out.

That’s why Atrezzo ZSR2 EV tyres were also designed with an even distribution of ground pressure in mind, ensuring longer service life and fewer tire changes. In addition, the Eco-Point3 rubber compound made of highly concentrated silica as well as environmentally friendly materials results in even lower rolling resistance, which extends the range – especially of e-cars.

Stephan Cimbal: “Sailun can also well-understand the concerns about energy losses when driving electric vehicles. By reducing the rolling resistance of the new ZSR2 EV tyres, the battery lasts longer, allowing e-car drivers to extend their range.”

Indeed, the Atrezzo ZSR2 has achieved an A rating on the EU wet grip tyre label in all available sizes and offers “guaranteed wet performance without sacrificing noise reduction for maximum driving pleasure”, according to the company.

Independent tests, such as those conducted by TÜV Süd, support the suggestion that the previous Atrezzo ZSR2 tyres already offer “superior performance in terms of rolling resistance, wet handling and braking”. In short, the latest generation are designed to compete with premium brand products.