Porsche now signs off a Hankook for the 911, which is a bigger deal than it sounds
The N on the sidewall is the hardest badge in tyres
Porsche does not let just anyone fit tyres to a 911. Its N-marking means the manufacturer has approved that exact construction and compound for that exact car, and it is among the more demanding approvals in the industry. From now on a Hankook carries it, which tells you something about where the Korean brand has arrived.
What is fitted
Porsche has selected the Ventus S1 evo Z in a staggered set-up: 235/40 ZR19 on the front axle and 295/35 ZR20 at the rear. Both sizes carry the NA2 marking on the sidewall, identifying them as original equipment developed specifically for the 911 Carrera's dynamics rather than an off-the-shelf fitment that happens to fit.
How long it took
Hankook has supplied Porsche as an original equipment partner for around a decade, and this is the milestone at the end of that road. Years of engineering went specifically into meeting Porsche's targets across four critical performance areas. Tyre development on this scale is slow, unglamorous work, and a decade of building trust before being trusted with the 911 is roughly how the process is supposed to go.
Where it was tested
Validation took place at three international high-speed circuits: ATP at Papenburg in Germany, Idiada near Barcelona and Nardo in southern Italy. Wet-weather testing was carried out at Pferdsfeld. That is a serious programme, and Nardo in particular exists to find out what happens at sustained high speed rather than over a single flying lap.
The engineering
Front and rear tyres get their own tread patterns rather than a scaled version of the same design, tuned to what each axle is being asked to do. The compounds were developed specifically for the application, using advanced resins and silica alongside revised production methods, with the aim of holding performance consistent in the wet as well as the dry.
What the people involved say
"The balance between circuit performance and daily use made this project particularly challenging," said Aleix Alcaraz, subjective test driver at Hankook, who describes the goal as delivering precise steering, stability at high speeds and reliable grip in all conditions. Yong Chul Choi, Vice President and Head of Hankook's Europe Technical Center, called the fitment a reflection of years of technical development work and growing expertise in driving dynamics.
AutoNext Take
Tyre supply announcements rarely deserve anyone's attention, but the badge politics here are genuinely interesting. For decades the 911 shipped on Michelin, Pirelli, Continental or Bridgestone, and the assumption that a Korean manufacturer belonged a rung below that has quietly stopped being true. Hankook has been winning OE contracts across German premium brands for years, and Porsche putting its N-marking on a Ventus is the clearest possible statement that the old hierarchy no longer holds. Anyone still choosing replacement tyres by brand prestige rather than by test data is working from an out-of-date map.
