EV OEMs Write Rolling Resistance Ceilings Into Sourcing Contracts
Electric vehicle manufacturers including Hyundai, Kia, and several European and Chinese automakers now specify maximum rolling resistance coefficients directly inside tire sourcing agreements, treating the metric as a hard qualification threshold rather than a preference. Hankook and Kumho have each stood up dedicated EV tire development lines in response, engineering tread compounds and stiffened sidewalls that manage the added weight of battery packs while still meeting the rolling resistance ceiling. This shifts supplier selection earlier into the vehicle development cycle, since qualifying a compound now takes many months, locking in supplier relationships years ahead of production.
Market Impact: Adds up to 5% EV range








