Luke - Anything new in high performance for C3 stock aluminum 15" rims?

[Rockn-Roll]

I've worn my rear 255/ZR60-15 BFGoodrich Comp T/A R1's down and need to replace them...will need to replace the fronts soon. I can not find any more BFGoodrich Comp T/A R1's...is there a replacement? It looks like the Drag Radials are the same thing as the Comp T/A R1's...can you verify that? Are the BFG Radial T/A's (a cheap $64 online) going to make my car a slip & slide compared to the Comp T/A R1's? Are there any larger rims which have the exact same style (reproductions) as the original Kelsy-Hayes rims? What is the outlook for 15" rims? I see a lot of racing tires for 15" rims...aren't 15" rims more desireable due to their lower moment of inertia? Is the contact patch gain significant enough to offset the increase in inertia?