Hi,
I think this is a new version of the Michelin HydroEdge -- the "Green X" is at the end of the name. A search of TireRack.com for "Michelin HydroEdge Green X" results in a "Coming Soon" notice:
Inside Track Online Spring, 2009
Hopefully, the "Green X' version will have the 51psi sidewall max!
And the Goodyears meet you requirements:
http://www.tirerack.com/tires/tires....tnum=055HR6AFM