I used this method to take the front left wing off, and found it very useful. One thing I would say is that unless you want to, you don't have to take the wheels off and jack the car up for the left wing. (I didn't try the right wing so cannot confirm if this would work, probably not because of the filter box). Left wing is easy this way, you can do it easily enough by turning the wheels to full left lock. You will need thin arms to feel for the headlight bracket. This is the only slightly awkward bit with this wheel in place method but if you lay on your back, feet facing the rear of the car and feel for the engine side headlight bracket locating post its easy enough. Get that one on first, the outer side one is easy as you can see it through the wheel arch with a torch. The inner locating post is best felt for from the front of the car and between the front valance under tray and inner of the wheel arch / tyre. Lay on your back with your left rib cage touching the tyre, you wont be able to do it from through the wheel arch. Its about a ten minute removal this way and a good roadside alternative in case you ever need to! Just remember to grease the headlight assembly locating runners for easy slide out next time.
