Hi, the official factory 246GT manual lists:
1425mm the front track (carreggiata a terra)
1430mm the rear track (carreggiata a terra)
my Italian is pretty basic but I think this is the measurement from vehicle centre to centre of wheel AT GROUND LEVEL.
The Ferrari brochure lists it as:
wheel base 92.2" in English (2340mm in French)
front track 56.1" (1425mm)
rear track 56.5" (1430mm)
The 206 GT is listed at rear=1400mm by the way. And the 'chairs 'n flares' would only have a different track if it had different offset - otherwise the centre of the wheel would be in the same place.
Ross in NZ