Just wondering if these would fit? If so what would be the best size tire? 225/45/18?????

Size: 18"x7.5"
Pattern: 5x114.3
Offset: 45mm

 

they will fit and that would be the correct tire size although i do like the rims they are too narrow for my liking i plan to go an inch wider and an inch taller than those but yeah they should work.
WHEELMAN

 

yea I agree that they are narrow, I wish I could find some "CHEAP" decent looking rims that were at least 8" wide.

 

Try edge racing wheels for some cheap wheels. they have a few decent looking rims for the maxima and good prices i was going to go after them because a set of 18x8s with sumitomos htrs was only gonna be about 1300. but now i have decided to go with volks.
WHEELMAN