Nokian Tyres Debuts Hakkapeliitta 01 with Temperature-Adaptive Stud System

Finnish tire manufacturer Nokian Tyres has introduced the Hakkapeliitta 01, a studded winter tire that incorporates an automatic grip adjustment mechanism linked to ambient temperature changes. This development, which follows more than a decade of research, addresses the long-standing engineering challenge of balancing maximum ice traction with reduced road wear on clear asphalt.

The central innovation is the proprietary 'On-Demand Grip' system, which utilizes 'Double Action Stud Technology.' This system features a temperature-sensitive layer embedded within the tread compound that surrounds the tungsten-carbide studs. When temperatures drop to or below freezing, this adaptive base layer stiffens, physically pushing the studs outward to maximize contact on ice and packed snow. As temperatures rise, the material softens, allowing the studs to retract partially or fully into the tread structure.

This automatic transition results in a quieter and smoother rolling characteristic on dry pavement, approximating the performance of a non-studded winter tire without requiring driver intervention. This autonomous adjustment represents a significant advancement from earlier concepts, such as the retractable stud system first shown by the company in 2014. Compared to its predecessor, the Hakkapeliitta 01 is reported to reduce road wear by up to 30 percent, a direct consequence of the metal studs not constantly engaging the pavement.

Performance data indicates improvements across key metrics: ice grip capability has reportedly increased by as much as 10 percent, and wet grip performance has seen an uplift of up to 5 percent. Furthermore, ride comfort is enhanced, with noise output potentially decreasing by one decibel through the integration of optimized stud geometry and 'SilentDrive Technology.' The tire has received both the Three-Peak Mountain Snowflake (3PMSF) symbol and the Ice Grip symbol, confirming its suitability for demanding winter conditions across passenger cars, crossovers, and SUVs.

In line with corporate sustainability objectives, the tread compound incorporates renewable materials, including natural rubber, bio-resins, and oils derived from pine resin and canola oil. Nokian Tyres, which pioneered the first winter tire, the Kelirengas, in 1934, positions this product as a major technological step forward. Paolo Pompei, President and CEO of Nokian Tyres, characterized the Hakkapeliitta 01 as one of the company's most significant technological achievements since that initial winter tire invention. Manufacturing is currently underway at the facility in Nokia, Finland, with commercial availability scheduled for the autumn of 2026, initially targeting the Nordic countries and the North American market.

The development process involved extensive testing at the company's Arctic test center in Ivalo, Finland, and the Hakka Ring facility in Spain. The technology functions purely mechanically, relying on the chemical properties of the compound layers in response to temperature, without employing any electronic or computer-controlled systems.