Ginetta - Ginetta G21
The bigger Ginetta in 1970 was the new G21. Originally offered with a 4 cylinder Roots 1.75 litre Hunter engine, or a 3 litre V6 Ford Essex unit. And later with just teh 4 cylinder engine as the fuel crisis was biting. The Ginetta G15 stayed in production until 1974.
Original tyre size for the Ginetta G21 was 165R13.