Depending on which front caliper you have, you can tell whether you would need the 5mm spacer or not.
If you follow the link below, you'll be able to visually tell which caliper you have. If you have the smaller one (2nd pic), then you'll definitely need the spacer. Visually verify your front calipers - don't just got by some of the comments of what year and model have which caliper. The comments made it sound like I have the problem caliper (2nd pic), where in reality I don't - so didn't need a spacer with my new wheels.
Some opt for the 10mm spacer so it's hub-centric and eliminates the vibration normally associated with spacers.
https://f10.5post.com/forums/showthr...=693143&page=6 (POST #121)