I am planning on getting new wheels. I have decided to go with Rota Circuit 8's or Rota Slipstreams in 15 inch. I am confused on what width to get? I am lowered 2.5 inches.

If I get The circuit 8's in 15's which size should I get?

15 x 6.5 +18 8h x 108

15 x 6.5 +38 8h x 100

If I get slips in 15's what size should I get?

15 x 7.0 +35/+40 4h/5h x 100/114.3

15 x 6.5 +40/+45 4h/5h x 100/114.3