Yes that is definitely the wrong size tire for that wheel.
205/45R17 = 24.2" total diameter
215/45R17 = 24.6" total diameter
225/45R17 = 24.9" total diameter (too large)
225/40R17 = 24.0" total diameter (too small)
235/40R17 = 24.4" total diameter, though I do not believe 235 width tires will fit this gen Focus.
You are currently running the smallest acceptable diameter for this car. (The smallest OE tire size is 195/60R15)
You would be better off with a 215/45R17 tire for those wheels. Stretching the 205 width tire on an 8" rim makes your fender gap appear more dramatic than it really is. You are also risking damage to your wheels if you were to hit a pothole or curb. Also, since you take your car to the drag strip, you want a wider contact patch and increased sidewall flex to achieve greater traction off the line.
As for your suspension, if it hasn't settled by now, it may be worth checking for installation issues.
If you have the FRPP suspension installed and your car is not sitting the same as mine:
You may have a problem somewhere.