5 June, 2025
Bridgestone launches new solar race tire featuring ENLITEN® technology with Twaron®
Twaron® with circular content is playing a key role in one of the world’s most advanced solar cars as it faces an extreme real-world test of endurance. The Brunel Solar Team will compete in the 2025 Bridgestone World Solar Challenge using Bridgestone tires featuring belts reinforced using Twaron® with circular content.
This marks the first time Twaron® with circular content is being used in a high-performance race tire. The material offers the same trusted strength, thermal stability, and low weight as standard Twaron®, while supporting our ambition to create a more circular aramid value chain.
Twaron® with circular content used in Bridgestone’s solar race tire
The tires for the 2025 Bridgestone World Solar Challenge will once again feature ENLITENTM technology, building on the success of the previous event. Developed through close collaboration with partners, Bridgestone has enhanced both the tire’s performance and environmental performance by incorporating additional recycled resources and applying a new version of Twaron® containing circular content in the belt layer.
These combined technologies contribute to the low rolling resistance, durability, lightweight construction, and puncture resistance required for solar car racing. Together, they help support the safe and efficient 3,000-kilometer journey across the challenging conditions of the Australian outback.
Teijin Aramid sponsors Brunel Solar Team
As an official sponsor of the Brunel Solar Team, we are proud to contribute high-performance materials that support both vehicle efficiency and safety. The team’s Nuna 13 car uses Bridgestone tires featuring belts reinforced using Twaron® with circular content. Inside the vehicle, a flame-resistant shield made with Twaron® fabric has been installed around the driver area to provide strength, thermal stability, and low weight under demanding race conditions.
“Every material choice we make is intentional. Twaron® gives us the strength, protection, and weight reduction that we need to perform at the highest level while also lowering our environmental impact with recycled or circular material. Partnering with Teijin Aramid is helping us build a safer and more competitive vehicle. It shows that high performance and sustainability go hand in hand.” "
Daan van den Dries, Chief Engineer of the Brunel Solar Team
Supporting Brunel’s bid in the World Solar Challenge
Spanning more than 3,000 kilometers from Darwin to Adelaide, the Bridgestone World Solar Challenge is the world’s leading solar mobility competition. The Brunel Solar Team, based at Delft University of Technology, has achieved multiple victories since its debut in 2001. In 2025, the team will compete in the Challenger Class with its latest solar car, Nuna 13.
“Seeing these two types of Twaron® being used in this solar race car is a powerful example of how our partnerships, be they with large corporations or student teams, really drive progress. This project brings together innovation and sustainability to further our goal of materializing ambitions.”
Peter ter Horst, CEO, Teijin Aramid
We are excited to see how Nuna 13 performs and proud to see two of our Twaron® solutions working together to support safety, efficiency, and sustainability. From circular innovation in the tires to the FR shield around the cockpit, this partnership shows how high-performance materials can help shape a more sustainable future for mobility.
To learn more about the race, visit www.brunelsolarteam.com
ENLITEN is a trademark of Bridgestone Corporation.
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