Probably gone offshore....
TS you are lucky own a GTR, too bad you choose to destroy it by downgrade it...
Been out of touch after selling my ride....but this thread sure bonds the closed community for loving NISSAN's....giving advice even to those who don't understand what the Skyline represents to die-hard enthusiast. Just kinda sad there are ppl like Gtrmaniac who still thinks its a Datsun with twin turbos!! Hope he managed to exchange with Gobiz, better to let someone who actually appreciate that phat rubber & brakes.
Anyway I'm gotta light up a cigar and start planning my next rocket ride.... :-)

Sean, it's better to stick to the stock wheels & tires for your case.
If U insist on down-sizing, make sure the smaller wheels U're getting can clear the huge Brembo calipers & disc rotors that comes standard on your R35 =)