just got some 17X9.5/18X10.5 C6 DD black with rivets and machined lip.

I'm thinking 275/40/17 and 295/35/18, I only see a couple choices of tires
Michelin Pilot Sport PS2
BFGoodrich G-Force T/A KDW2
Bridgeston Potenza RE760 Sport
Continental Extreme Contact DW
Continental Extreme Contact DWS
Vredestein Ultrac sessanta
Nitto NT05

If anyone can give me other options in tires or sizing without modification it would be greatly appreciated

 

Firestone wide ovals they hook pretty decent on the street and not over priced. I have the same wheels on my Trans Am no modification needed but I do run a half inch spacer just to sit the wheels out a little further they sat in to far for my liking.

 

You can easily put a 315/30/18 on those 10.5's if desired. I've got nt05's up front and Falken azenis out back. When in wear these out though, I'll be going with a toyo r888 all around.