Track Length Discrepencies

[brainflood]

I made this interesting observation a few months ago whist looking at race results. Clearly there are some serious discrepancies in the lengths of Spedeworth tracks. Data taken from Spedeworth and Mylaps!!! Anyone willing to attach a click wheel to their car? :)

http://www.superstox.co.uk/zz_images/track_length_data.jpg