I have no idea what any of this means?

Diameter - Good
18.0”

Width - Good
9.0”

Bolt Pattern - I guess this starts my confusion.....
6-135.0mm

Offset This makes me really confused
25

I dont want to lift my VX and I dont want my tires sticking out. So I AM THINKING THE offset makes them stick out??? The higher or lower number works in which way.......

As always - thank you in advance.