New And Worn Phase Tests Make Tyres Safer And Long Lasting
- By Ertugrul Bahan
- December 25, 2024
What does ‘Tyre Labelling’ guarantee? It shows schematically the classification of tyres in terms of fuel consumption, noise and wet performance. The tyre manufacturer is obliged to demonstrate the values indicated on the label in tests carried out in accordance with the test method described in EU regulations. This essentially means that the performance parameters of the tyres in question are at least exactly at this level or above the positive side of the limit scale, but only when the tyres are new, i.e. at the beginning of tyre installation. It is technically expected that the stated performance values will not change until the end of the first 10,000 kilometres or until wear of approximately 1.5 mm occurs.
Who knows what the actual grading of tyres will be after the second 10,000 kilometres or at 3 mm down wear stage? No one can correctly estimate what the wet noise and traction will be after most of the mini-kerf or notches are eliminated or reduced, but only when the tyre is tested it can be monitored. Or if the tyre's grooves are completely ‘V’ type, and after a period of time the tyre's traction forces change significantly, then rolling resistance and wet braking behaviour will become significantly different.
The performance level of worn tyres might be therefore quite uncertain and must be taken into account on a legal basis. The wet performance of worn tyres will be a check point for ‘wet grip class’ grading on EU Tyre label after 1st July of 2024, which is in line with the demand of tyre industry parties asking more sustainability. Thanks to the introduction of a new EU regulation R117-04, tyres sold in EU distribution channels meet the same minimum wet braking performance requirements not only when new but also when worn down to the legal minimum tread depth of 1.6 mm.
EU is the most sensitive and advanced market to sustainability in the world. It is driven at any time by the increasingly aspiring regulatory agenda and there is always a constant development in this respect. Requirements of consumers or the automotive industry are more demanding by a more conscious society. Tyres’ life cycle contributing to a more sustainable future proactively identifies and addresses the potential human health and environmental impacts associated with the industry. Therefore, safer and more environmentally sound mobility options are always geared towards resource conservation and fuel economy amongst the focus points of innovations.
Thanks to the introduction of a new EU regulation R117-04, tyres sold in EU distribution channels meet the same minimum wet braking performance requirements not only when new but also when worn down to the legal minimum tread depth of 1.6 mm. They must therefore be tested both as new and as worn tyres before receiving the 'wet grade’ on the label. This means that EU drivers can now buy safer tyres that meet the legal minimum standards for wet braking performance, even when worn down to the legal minimum tread depth.
As a weak point of R117-04 regulation, it only covers wet braking of new and worn-out tyres. It does not cover ‘noise’ and ‘rolling resistance’ items given on labelling or more simply endurance performance level of especially cheap tyres in the market with a 1.6 mm tread depth assuming they will not change!
Informal wet braking tests conducted by ETRTO show that the wear rate of group ‘C1’ tyres can decrease by up to 50 percent, while the loss rate of group ‘C2’ and ‘C3’ tyres remain in 10 percent. The new regulation R117-04 therefore does not apply to group ‘C2’ and ‘C3’ tyres, as they normally have a greater tread depth and it is assumed that the level of wet braking does not change during the wear phase. However, since group ‘C1’ tyres have a smaller tread depth, it is assumed that their contact patch is more subject to negative changes, so that the wet braking performance also changes more after use.
As a weak point of R117-04 regulation, it only covers wet braking of new and worn-out tyres. It does not cover ‘noise’ and ‘rolling resistance’ items given on labelling or more simply endurance performance level of especially cheap tyres in the market with a 1.6 mm tread depth assuming they will not change!
The new R117-04 regulation may mainly be considered as sustainability issue rather than total safety. It promotes tyre usage until defined min tread depth creating a room to consumers to trust the tyres above minimum tread depth level. However, it should still be positively considered a step forward to the worn tyres’ safety regulation. It accepts that wet braking level of worn tyres are more critical and important safety issue and should be regulated. By the way, consumers may use their tyres in longer stage, giving a contribution to a greener world.
The transparency provided by the new regulation, which came into force on 2024 July, is even more essential, as some performances deteriorate over time, especially in terms of safety. R117-04 in this term guarantees enhanced safety, better respect for the environment and the protection of motorists’ purchasing power.
Common consumer behaviour shows that 50 percent of car tyres are demounted before reaching a residual depth of 3 mm and replaced with a new set of tyres.

Michelin has studied the safety margin of used tyres since 2018 and has stressed the importance of tyres to be used until 1.6 mm remaining tread depth. The best way was to test worn tyres because it can easily reflect the real risks a driver can face on the road. During the study, the results were surprisingly varied. It was shown that some worn tyres performed better than new tyres when braking on wet roads. This was exactly what Michelin has been saying for a long time. The performance of different tyre brands also varies considerably.
Common consumer behaviour shows that 50 percent of car tyres are demounted before reaching a residual depth of 3 mm and replaced with a new set. In global scale, this makes around 400 million tyres are prematurely scraped every year. A quarter of this amount, or almost 100 million tyres, would save at least 6 million tonnes of CO2 instead of reproducing it. The implementation of this regulation will certainly have an impact on the demand for new tyres in Europe.
R117-04 presently focus mainly on only tread depth attribute, while aspects such as ageing or rubber structural integrity degradation remain outside the scope of this amendment.
In addition, in the hope that higher performance requirements will not result in higher costs for consumers, the changes are designed to encourage consumers to continue using sustainable tyres instead. Once drivers are confident in their tyres, they will drive to a tread depth of 1.6 mm, potentially saving EUR 6 billion a year by not complying with proposals to reduce tread depth to less than 3 mm.
R117-04 presently focuses mainly on tread depth attribute, while aspects such as ageing or rubber structural integrity degradation remain outside the scope of this amendment. We also mentioned some additional weak points above. However, imposing these standards, will increase the driver’s awareness for worn tyres performance limits and let them to make more informed decisions when purchasing tyres.
On the other hand, understanding the ‘NEW AND WORN PHASE TESTS CONCEPT’ will become the standard mentality of the customer, who will be able to assess the attitude towards the initial performance of the tyres, which may change over time, but should not! The new challenge will be to weed out products that are not gripping in the wet when worn and have not met these expectations for years..!
KraussMaffei Names Ren To Lead Extrusion Unit Alongside China Role
- By TT News
- September 08, 2026
KraussMaffei has appointed Xinting Ren as Managing Director of its extrusion business, effective 1 September, 2026, combining the role with his existing leadership of the group’s China operations.
Ren succeeds Ralf Benack, who left the company at his own request on 31st August , ending a tenure of about two years.
The company said the dual appointment is intended to strengthen integration between its extrusion activities and international operations.
Ren has led KraussMaffei China for the past three years, overseeing cross-technology activities in the Chinese market. Before joining the group, he held several management roles in the chemical industry, including Assistant General Manager at KraussMaffei Company Limited, now operating as Sinochem Equipment Technology Qingdao Co., and most recently served as general manager of Shanxi China Coal Pingshuo Energy Chemical Co., Ltd.
Benack took over leadership of KraussMaffei Extrusion in 2024 and was responsible for the group’s global extrusion business. During his tenure, the company focused on operational processes and customer orientation, reducing delivery times and further developing the Technology Center at its Laatzen site.
The facility now offers 26 pilot lines for development and customer projects, and the company said it also expanded its extrusion technology portfolio.
From September, responsibility for the extrusion business and management of the China business will be combined under Ren’s leadership.
Nokian Tyres Launches Summer Tyre With Top EU Label Ratings Across Range
- By TT News
- September 08, 2026
Nokian Tyres plc has introduced a new premium summer tyre, the Powerproof E, designed for Central and Southern European markets, with A-class ratings in all three European Union tyre label categories across its full range.
The company said the tyre achieves top grades for rolling resistance, wet grip and external rolling noise, reflecting a development approach aimed at balancing efficiency, safety and comfort within a single product.
“Whether the priority is maximizing range and efficiency or achieving confidence and comfort in wet conditions, drivers should not have to compromise on safety. The new Nokian Tyres Powerproof E is designed to deliver outstanding performance in the areas that matter most to drivers,” said Tommi Alhola, Senior Vice-President for Passenger Car tyres in Central Europe.
Samu Lepistö, development manager at the company, added: “Achieving A-class ratings in all three EU tire label categories across the entire range is a significant result. These characteristics are all important to today's drivers yet improving one can often affect another. Nokian Tyres Powerproof E was developed to deliver balanced performance across all three areas.”
The tyre incorporates what the company calls Motion Control Technology, combining tread design, compound development and structural engineering to support efficiency and wet-weather performance.
Depending on size, between 40.9 percent and 42.8 percent of the tyre’s material content consists of recycled and renewable inputs, including rice husk ash, recycled carbon black and recycled steel.
Production takes place at the group’s factory in Oradea, Romania, which opened in 2024 and operates with zero direct carbon dioxide emissions, powered by renewable energy.
The Powerproof E is designed for passenger cars, sport utility vehicles and crossover vehicles, including electric, hybrid and internal combustion models. It will be available in sizes ranging from 16 to 20 inches for the 2027 summer season in Central and Southern Europe.
Frank Buntinx Takes Helm As Managing Director Of Continental Tire Canada
- By TT News
- September 08, 2026
Continental Tire Canada has appointed Frank Buntinx as its new Managing Director, effective 17 August 2026. In this executive capacity, he assumes comprehensive oversight of the organisation’s entire Canadian tyre portfolio, which encompasses passenger and light truck vehicles, commercial truck lines and specialised tyre segments. His leadership will guide the strategic direction and operational performance across these diverse business units.
A native of Belgium, Buntinx brings over two decades of tenure with Continental, having commenced his career there in 2003 within logistics and supply chain management. Over the years, he has accumulated a broad commercial skillset through successive roles in marketing, pricing strategy, business analytics, fleet operations and sales. His professional trajectory later elevated him to senior leadership positions in the Benelux region, where he directed marketing efforts and subsequently headed Fleet Solutions and Truck Tires, thereby acquiring multifaceted management expertise.
This transatlantic appointment signifies a pivotal career transition for Buntinx, offering him the chance to infuse the Canadian market with an international vantage point. His arrival is anticipated to bolster Continental’s regional presence, leveraging his extensive cross-functional background to navigate the complexities of the domestic tyre industry and drive organisational growth.
“I am truly excited to join Continental Tire Canada and begin this new chapter. Continental has built a strong business and reputation in the Canadian market, and I look forward to working alongside our talented team to build on that success, strengthening Continental's position while supporting the growth and success of our customers,” said Buntinx.
Dunlop To Exit Karting Tyre Segment By 2027
- By TT News
- September 07, 2026
Sumitomo Rubber Industries, Ltd., which operates the Dunlop brand, will discontinue the supply of karting tyres by the end of 2027 as part of a strategic review of its business and allocation of management resources.
The company said it would continue supplying products to existing customers until December 31, 2027.
Dunlop has produced karting tyres since 1976, supplying products homologated by the Commission Internationale de Karting-FIA (CIK-FIA), under the Fédération Internationale de l’Automobile, as well as tyres accredited by the Japan Automobile Federation.
The company said its products had supported a wide range of users, from recreational drivers to young drivers aiming to compete at higher levels, and had contributed to the development of karting participation.
It added that the decision followed a review of its medium- to long-term management strategy and changes in the business environment.
The group said it would continue to contribute to motorsport activities, while expressing appreciation to customers and organisations that had supported its karting tyre business.


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