While looking on Mackin's site i noticed that they have the perfect offset for our car in the 17" size (17x7.5 +50 front 17x9 +63 rear).
However, I am not sure of what offset would work with their 18" application since the offsets above are not listed for 18".

Here are the highest offsets they list for 18",
what would you recommend if any along with tires sizes.

18x7.5 +50
18x8.5 +47
18x9 +47

Thank you for you help

 

The rear fitments don't really work. They will stick out of the wheel well.

Jim