It was only last weekend I removed my UK spec front bumper from my M5,
Remove three screws from each front wheel liner,
Remove a whole load of screws that hold the bell pan to the bottom of bumper,
Remove two large "torx" screws that hold the bumper to the car, located vertically at the top of the lower grill,
Pull bumper forward BUT NOT RIGHT OFF as you have to reach in and disconnect the pipe for the headlight washers and the wires for the fog lights.
Then pull it right off while making sure it is not snagged on the wheel well liners.
Assuming you are replacing the bumper you will have to remove the aluminium panel from inside the bumper, this is held on with some plastic thingies that are behind the rubbing strips on each corned of the bumper, if you tap the pin in the middle if these thingies towards the front of the bumper the thingies will release.
I just did this over the weekend and the grease marks are still there under my nails....so.....
1. Remove the 3 hex head bolts (8mm) from each of the wheel liners. These are the ones on the front side of the wheel well, around midway height of the wheel. There is NO NEED to jack up the car, just turn the wheel each way for access.
2. Remove the 4 hex head bolts (10mm) from the wheel liner from bottom of car. You'll need a longer socket to access this. These 4 hold the same plastic liner in place. I believe it's called an "Engine Compartment Liner", but the part number is 51712694832 just for reference.
3. With wheels turned, you can actually just remove both left and right pieces.
4. Undo the fog light electrical connector as they'll be visible once #3 is complete.
5. Undo the Torx bolt that holds the bumper in place. You'll see them only if are looking UPWARDS from under the car. They are silver in color, and located on the top edge of the air intake. I think it may be a T45 size, available from Sears.
6. Once the Torx bolt is removed, yank the bumper forward (put some towel or sheeting on floor to rest your bumper) from EITHER of the edges. Note there is a catch on both sides. Some force is expected.
7. Don't remove the entire bumper just yet. Or if you do, rest it AS CLOSE AS POSSIBLE to the car.
8. Undo the headlight washer hose. Close to the source end of the hose, you'll find a quick-release clip. Just pull with your nails or a pair of needle nose pliers. Plastic is small and brittle, be careful.
9. If you have PDC, there will be 4 wires connecting to each sensor. The connector has a clip which you'll need to undo. Note they all face different directions.
10. Once the hose/wires and loose, remove the whole bumper.
Installation is easier with 2 people as you'll need to align the side "catch". You could stack some books to hold up the bumper to the correct height, so it'd be easier to maneuver.
2 person job for the first time, but OK if you prop up the bumper to the right height with some yellow pages. That's the last time I ask my wife to help with the car. Now she's discovered the go fast parts I constantly slap on.
Originally Posted by Torquey5
Definitely a 2 person job, but not too hard. Follow the instructions and you'll be fine, pretty straight forward.
Oh now thats just great!! Now you guys post something after I paid my body shop guy 60.00 to do the job for me and put on my new grill piece from Slimm.....I watched them and it was much easier with 2 guys on each side:=)