[fliprayzin240sx]

You dont need spacers to fit them but you'd probably want some spacers to get them somewhat flush to the fenders. You shouldnt have to roll/pull the fenders on this setup.

As far as the tires, you probably wanna get rid of the 235/45-18 all together since those are too big for these cars. I doubt you'd fit those tires up front without hitting the top of the struts. I'd run some 215/40 up front and 225/40 in the rears.