Last month, Japan’s top single-seater series announced it would be holding a series of tests either before or after each race weekend in the 2022 season with two development cars, to be driven by retired two-time champion Hiroaki Ishiura and fellow veteran Koudai Tsukakoshi.
Ishiura and Tsukakoshi respectively drove the cars affectionately known as ‘red tiger’ and ‘white tiger’, a reference to their colour schemes, during two days of running on Wednesday and Thursday at Fuji.
Super Formula announced last year its plans to move towards the adoption of carbon-neutral fuel, while single tyre supplier Yokohama has been tasked with creating tyres using “natural compound agents” and other reusable materials as part of its recently-signed contract extension.
Both Ishiura and Tsukakoshi remarked that the test was more straightforward than they had imagined and were impressed by the performance of both the tyres and fuel they tried.
“Because it was the first test, I thought a lot of…
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