The Future on the Road: How Continental Is Transferring Technologies from Concept Tires to Series Production

"Sustainable innovations belong on the road and not in a showroom. We ensure that innovations and concept tires are made available to our customers and go into production as quickly as possible, without any compromises in terms of safety and performance. We were the first to integrate pioneering technologies such as recycled PET into series tires. And we were also the first tire manufacturer to launch a model with a particularly high share of renewable and recycled materials. We walk our talk when it comes to making our world more sustainable," says Jorge Almeida, Head of Sustainability at Continental Tires.

PET bottles often end up in waste incineration plants or landfills. By using the ContiRe.Tex technology, Continental and its partners have succeeded in producing high-quality polyester yarn for tires from recycled PET bottles. Depending on the tire size, between nine and fifteen PET bottles can be reused per tire. The PET bottles used come exclusively from regions without a closed recycling loop.

The premium tire manufacturer brought the Conti-Re.Tex technology to production readiness in less than a year. This is remarkable, because in addition to the conversion of corresponding production processes in the tire plants, the use of new raw materials is always a complex balancing act for the engineers and material experts at Continental. After all, only when all the materials are perfectly coordinated with each other can customers benefit from safe, energy-efficient and durable high-performance tires. Series tires with Conti-Re.Tex technology have been available from specialist tire dealers in Europe since April 2022.

The Conti-Re.Tex technology is also part of the most sustainable passenger car series tire on the market to date. With the UltraContact NXT, Continental offers a tire with a particularly high proportion of sustainable materials. Many of the technologies contained in the tire were part of the Conti GreenConcept concept tire, which was presented to the public for the first time at IAA Mobility 2021. These included silica made from rice husk ash or recycled PET bottles. Production of the UltraContact NXT started in July 2023 in Lousado, Portugal. With up to 65 percent renewable, recycled and mass-balance-certified materials, the series tire combines a high proportion of sustainable materials with maximum safety and performance. All 19 tire sizes received the top EU tire label rating (“A”) in rolling resistance, braking in wet conditions and exterior noise. By 2030, Continental is aiming to use over 40 percent renewable and recycled materials in its tires. The UltraContact NXT is an important step for the tire manufacturer on the way to achieving its ambitious sustainability goals.

Thanks to the balanced interplay of efficient and sustainable technologies and materials, Continental products are particularly efficient when driving. The Conti CityPlus technology presented at this year’s IAA Mobility, for example, increases the overall energy efficiency of a car tire by up to 10 percent. This means lower CO₂ emissions for cars with combustion engines and greater range for electric vehicles. This is achieved by optimizing tire behavior in inner-city stop-and-go traffic, which can increase the range of passenger cars by up to three percent. For electric vehicles, this corresponds to a saving of around 0.6 kWh per 100 kilometers. Continental’s latest technology could also be used in production in the near future. The premium manufacturer is in contact with several original equipment customers who have expressed interest.