G8 update...
I finally got the time to order the tires and put them on - went with 285 35 19's in the rear and 245 40 19's in the front - tiires are BF Goodrich KDW's.
Since these are summer tires - the wheels will be coming off in the next few weeks - not that it gets that cold in the Carolinas - but it does drop in Dec/January.
Centercaps are off an 04-05 Pontiac Bonneville GXP - I think I am going to pain them SEM trim black - just not sure at this point.
Now for the pics: