The genuine Ford manual says the following:

Forte requires 205/65 HR15

XR Series requires 225/50 R16

Now what happens if you put XR Series wheels onto the Forte?

Since XR Series tyres have a section width of 225mm, which is greater than the Forte's 205mm requirement.

Does this mean that the wheels are going to stick out?

whats this got to do with a wheel alignment?

Obviously the tires are wider.

Generally it'll be 10mm in and out, ie: centre.

Your talking about 2 totally different sized rims and the offsets slightly vary.

It'll take more than 20mm to get past the guards and strut towers.