Strange, those JPEGs look the wrong way round to me. Pilot sport 1s are the directional tyres (now discontinued). As far as I know PS2s are not available in 225/45Z18 yet.
Review here, and this is pretty much the cheapest place to get tyres (to quote a local tyre dealer "There's no point in ringing round, you won't get any cheaper than black circles").
http://www.blackcircles.com/tyres/michelin