Wheels & Tires - What backspacing with a 15x10 convopro or warrior?

I have narrowed my selection down to either the convo pro or the warrior. But they are offered in two different backspacings in a 15x10. Do I need a 5" or the 6.5"? Will I need to grind any on my calipers? I am planning on running a 275/50/15 nitto 555R. Let me know what you think. Thanks, Brett

You need the 6.5 inch backspacing. Dont think centerline offers 7.5 inch backspacing for those wheels. You will have to grind your calipers. Also Alan Harris around where you live has the warriors 15x10 with 6.5 inch backspacing. They look pretty good and dont stick out that much.

How far would they stick out with the 6.5 backspacing and a nitto 275/50/15? Any pics?