So would it most likely be tha

18x7.5 5 100 +48
5 114.3 +30,+40

30 offset in tha front (clear spoon calipers?)
40 in tha back. (how wide tires can I go?)


edit: will tha 18 x 7.5 do for front
or 18 x 8.5 back

sorry for my noobie ness in offsets.

 

will 8.5 work? in tha back? better handling?

 

Sorry
18X8.5 with a 40mm offset will not work in the rear.

 

If you really want to run this wheel. You can possibly run this set up. Which is what I think this car in the photo is running.

215x35x18 inch tires in front with 18x7.5 40offset
245x30x18 inch tires in rear with 18x8.5 40offset

Instead of the avg
225x40x18 front
255x35x18 rear

 

OT: I see a front mount.