Wheel arch extension retrofit

[Paul in Norfolk]

Wheel arch extension retrofit BMW part number 51 77 0 421 056
I have just fitted the wheel arch extension kit that will allow you to put the 9/10Jx19 or 10/11Jx20 OEM wheel option on the SE that came from the factory with 8.5Jx18.
Original arch back

The front arch is basically the same


New arch front and back




Original 18” Wheels


New 19” M Sport wheels


Fitting instructions to follow

[wch X5]

Thanks for posting the pics. I am going to receive my arches this week so I can install 239's. Did you need a special tool for the rivets?

[Paul in Norfolk]

Originally Posted by wch X5

Thanks for posting the pics. I am going to receive my arches this week so I can install 239's. Did you need a special tool for the rivets?

Yes the plastic rivets will not fit a standard rivet gun.

you need this, They sell them on ebay

[Paul in Norfolk]

Originally Posted by Paul in Norfolk

Wheel arch extension retrofit BMW part number 51 77 0 421 056
I have just fitted the wheel arch extension kit that will allow you to put the 9/10Jx19 or 10/11Jx20 OEM wheel option on the SE that came from the factory with 8.5Jx18.
Original arch back

The front arch is basically the same


New arch front and back




Original 18” Wheels


New 19” M Sport wheels


Fitting instructions to follow

To remove the arches you need to remove the plastic rivets.
You do this by pushing in the centre pin of the rivet with a small screwdriver or punch. They are a tight fit so they will need a firm push.
Next I put a large screw into the hole, twisted it a couple of times then pull the rivet out with the screw. You can lever them out with a screwdriver but I didn’t want to damage the trims.

After you have removed all the rivets you are ready to remove the arch.
Start by pulling the arch trim from the back of the arch. You will have to give
it a little wiggle as you pull.


The rear arch trims also have 4 plastic panel clips holding them on so you will need release them as you pull it off. They are same type of clips that hold the door cards on, if you do not have a tool for this then just give it a good pull and they will come out.



Remember to transfer the clips from the old arch to the new one before fitting



The fronts come off the same as the backs accept they do not have the extra clips.
Fit the new arches; rivet them and your done.

[rh71]

nice guide... after asking 1 person here via PM, I've had to answer about 5-10 others after my job as well.

With the rivet tool though, it doesn't look like that would fit in the wheel well unless you take the tire out correct? We had to do it by hand without the tool - 2 people, lots of elbow grease for a tiny plastic piece... not fun. I still need to finish the job actually... some holes are still unfilled (strategic spots though).

[Paul in Norfolk]

Originally Posted by rh71

nice guide... after asking 1 person here via PM, I've had to answer about 5-10 others after my job as well.

With the rivet tool though, it doesn't look like that would fit in the wheel well unless you take the tire out correct? We had to do it by hand without the tool - 2 people, lots of elbow grease for a tiny plastic piece... not fun. I still need to finish the job actually... some holes are still unfilled (strategic spots though).

if you jack the car up you can take the rivets out with the wheels on and replace most of them. Yes there will be a couple you can't use the rivet tool on until you take the wheels off. If you have axle stands then it is much easier to remove the wheels first.

[mavic1010]

There were only 2 I couldn't get the rivet into. The very bottom/front of the rear wheel.

[AUU 555]

good job !! nice M WHEELS

[gokudo_90]

my x5 has 20'' 214 and i ordered 215 21'' from my dealer, do i need to do any of this??

[BCA]

Originally Posted by gokudo_90

my x5 has 20'' 214 and i ordered 215 21'' from my dealer, do i need to do any of this??

No. If yours came from the factory with the 214s, it should already have the flares installed.