Seems there are lots of dodgy tyres around which are illegal. If you're caught by police you could get 3 points PER TYRE.
Put simply, they should say 'made in germany' on the sidewall. If they say 'made in taiwan' it means they're not designed for this country and are illegeal. If they say 'made in china' they're coppies.
http://www.talkaudio.co.uk/vbb/showthread.php?t=209298
http://www.mrtrally.com.au/forums/to...69&whichpage=8 (About chinese coppies - half way down)