Analysis of information sources in references of the Wikipedia article "테슬라 로드스터 (2020)" in Korean language version.
tires on the prototype are Michelin Pilot Sport Cup 2 325/30ZR21 (104Y) rear and 295/35ZR20 front. These have a "Y" speed rating, which means they have a maximum speed of "over (300kmph)." They are the same tires used on the Porsche 918 Spyder (which has a /340kmph top speed).