- Who
- Terry Grant
- What
- 18 centimetre(s)
- Where
- United Kingdom (Birmingham)
- When
The narrowest J-Turn was performed in a Renault Twingo, with a difference of 18 cm (7 in) between the car length 360 cm (11 ft 9 in) and the space between two barriers 378 cm (12 ft 4 in) by Terry Grant (UK) at the Autosport International Show in Birmingham, UK, on 10 January 2008.