A tour rating is the rating out of 10 given to the attractiveness of a woman which isn't comparible to their real life ratings.
This 'tour rating' can expect to raise by up to 6 points in extreme cases as males lower their standards significantly, usually after an extended period of alcohol consumption.
Kevan: Hey James, did one smash that girl last night?
Jamie: Oh for sure... she was hot, like an 8 (out of 10)
Kevan: A tour 8?
Jamie: Of course blad! In the real world she'd be a 3 (out of 10) at best!
Kevan: THATS... why i love 'tour ratings'