This has probably been asked a million times but I searched and didnt find anything. But newho on a whim my buddy said he'd throw me his rims n tires for 450 flat but they are off of an 07 impreza 2.5rs. I drive an 04 wrx, would these fit? Hes got some nice black ones with a chrome lip and my tires are bald so this is a killer deal for me if it fits.
They fit fine. Note his stock size (215/45/17) is slightly shorter so your gear ratio will get a little shorter. People like that generally on the 5-speed. Anyway, I'd recommend switching to 225/45/17 tires the next time you change if you keep those 07 wrx rims.
I'm not familiar with what rims the base model had in 2007 specifically but it's a pretty safe bet they'll clear 02-05 WRX brakes. You can get 15" wheels over those and backspacing isn't much of an issue. The regular Impreza is 5x100 though so no problems there.