Best LRR tire for a 2013 Volt 215/55r17

[rmay635703]

Hmm it seems like we seem to get a decent LRR tire thread about once a year.

The trouble with no US ratings is that its darn near impossible to get any scientific information on the LRR to compare different US tire offerings.

http://ecomodder.com/forum/showthrea...gen-33313.html
http://ecomodder.com/forum/showthrea...res-16662.html
http://ecomodder.com/forum/showthrea...res-14406.html
http://ecomodder.com/forum/169490-post33.html
http://ecomodder.com/forum/showthrea...ling-2813.html

Sadly though many of the A rated tires from nearly 5 years ago are still the ones A rated for purchase, but only if I live in Europe.

So called Goodyear EfficientGrip Performance tires (A rated LRR) aren't really available over here in any useable size.
Other newer lines are B rated or lower.

eiretyres.com

Any ideas what US spec tires are A rated for LRR? I am told that even if a line is sold in both the US and Europe I need to pay attention to tread life and other factors because the US version of the same tire is usually different than the Euro spec.

Any ideas?

I am also looking for something around a 225/70r15 in LRR but the offerings aren't great.

Thanx
Ryan