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DIY radiator protection

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#1 ·
Little guide for those who are wanting to fit radiator/chargecooler mesh protection. Bumper removal

Having originally gone down to bmw and asked for a contribution towards retrofitting the new oem bmw rock guards I had no joy after over a month of promised return phone calls blah blah blah.. you know how that bit goes bmw customer service is shocking at best. So I gave up after a over month and went down to halfrauds to buy some mesh.

Aluminium black mesh 1m x 0.25m times two - £25 each

First off you need to get the car jacked up and both front wheels off 17mm deep socket and breaker bar needed. This can prove some what difficult as there aren't very many places to get axle stands under to support the car. I found there was just enough room to get them on the subframe.

Now open the bonnet. There's a rubber strip at the front of the engine bay that needs to be removed simpley pulls up. Now six torx screws are visible, remove these.



Next the front wheel liners need to come out, these are 8mm screws, there are multiple screws but all visible and obvious as to what you need to remove.



Now the wheel liners off there are two long 8mm screws which hold the bumper to the front wing, these need to come out. They are in a awkward position to get to I found a swivel head attachment on a socket helped.


Underneath the car now there's multiple 8mm screws, again it's obvious which needs removing. Once these are out the bumpers ready to be removed, gently ease it forward if you have parking sensors these will need unplugging.



Time to fit the aluminium mesh, I cut roughly to size using tin snips leaving the mesh slightly larger so there was no visible edge once the bumpers back on.
Simply cable tie where you thinks necessary to support the mesh.
For the kidney grill protection I cable tied the mesh to the vbrace bars so I could still remove the kidney grills if needed to gain access to anything.







Refitting the bumper is reverse of the above process.

Happy with the result, doesn't look out of place and barley visible. Took around 2 hours start to finish, not a overly difficult job I managed it on my own it's just more time consuming.
 
#2 ·
Looks a tidy job, certainly looks very OEM.

Personally i'm of the opinion that they are more likely to create an issue over you having removed the front bumper and modified it from standard. If I have an issue during the warranty period then they will be sorting it as far as i'm concerned unless they have sufficient evidence to suggest that a boulder has destroyed something. Crazy to think you have to even consider doing this for the calibre/cost of these cars.
 
#3 ·
gazw said:
Looks a tidy job, certainly looks very OEM.

Personally i'm of the opinion that they are more likely to create an issue over you having removed the front bumper and modified it from standard. If I have an issue during the warranty period then they will be sorting it as far as i'm concerned unless they have sufficient evidence to suggest that a boulder has destroyed something. Crazy to think you have to even consider doing this for the calibre/cost of these cars.
It's all removable if I needed to, I agree that it's not something we should have to do but bmw just aren't interested
Having followed the 25 plus page thread on here and the agro people have been through getting bmw to accept liability for a stone smashing a rad it's just not a position I want to be in.
 
#4 ·
Well done Williams327 and great guide for others to follow.

I did suggest that owners do exactly that earlier in that 25+ page thread but some were hesitant despite it being an easy way to protect their cars.

Personally like you I'd prefer prevention rather than cure after the fact. :wink:
 
#5 ·
GMballistic said:
Well done Williams327 and great guide for others to follow.

I did suggest that owners do exactly that earlier in that 25+ page thread but some were hesitant despite it being an easy way to protect their cars.

Personally like you I'd prefer prevention rather than cure after the fact. :wink:
Cheers mate, it's a cheap mod to potentially save a lot of head ache. I hate dealing with dealerships as it is there all con artists
 
#8 ·
Great work mate!

Admins - Can this be added to the M-Lite sticky page

Thanks

Sent from my iPhone using Tapatalk
 
#9 ·
Here's another "thanks" for taking the time to document the process so well.
Mods, I think this should be added to the FAQS sticky.

Edit: suggestion to sticky it beaten
 
#10 ·
I hate the way BMW are taking the position in arguing there's warranty issues if someone does this mod though. A standard wire mesh wont affect cooling at all, unless someone was to cover the vents in a very fine close mesh. Motorbikes have used mesh guards for years as they have such exposed radiators, fitted as OEM by the manufacturers, so I don't see this as a problem at all.

Anyway good post, something I will be doing myself if I can't get hold of the official guards :)

I was hoping they'd be available for joe public to buy but I haven't seen any evidence of this, unless anyone knows.
 
#11 ·
Appreciate the thank you people. I'm sure it'll come in handy to some who are thinking of doing the same.

Regarding warranty rejections after fitting not really sure what issues you could have that would relate to the mesh?
 
#12 ·
Hi
Thanks for the info on the problem and your fix, it was great to be aware of this before I took delivery of a new M240i. ( having seen on other forums the extent of this problem and costs involved)
My car has "Rock guard" on main rad only BUT NOT on either side vent ones, but imho this looks pretty useless and would rather stop the stones getting through in the 1st place.

As my car is a lease and the finance company seem a little "draconian" I did not want to risk removing the bumper and associated bits so I worked out I could fit the lower main centre and side vent grilles externally.
This way I could remove them in 5 mins should the need arise.
I have ordered a par of black kidney grilles to fit the mesh internally and the originals can then be easily replaced "untouched " when the car goes back.
Mesh was black aluminium (4mm x 9mm mesh size) sourced from UK flea bay and was cheaper than Halfrauds and I edged it with 6mm edging from same mesh supplier, this was to protect paintwork from cut sharp mesh edges.
main.jpg

rhs and lhs.jpg

grilles.jpg


Side vents had to be done in two pieces per vent due to dam splitter!
Grilles were attached with very thin black cable ties which were more than adequate (use a medium straightened paper clip with a hook bent in it to retrieve the cable ties back through the mesh)
Thanks to the original poster and I hope this helps anyone not wishing to dismantle anything for whatever reason
20190104_114803_resized.jpg
 
#13 ·
bigfoot49 said:
Hi
Thanks for the info on the problem and your fix, it was great to be aware of this before I took delivery of a new M240i. ( having seen on other forums the extent of this problem and costs involved)
My car has "Rock guard" on main rad only BUT NOT on either side vent ones, but imho this looks pretty useless and would rather stop the stones getting through in the 1st place.

As my car is a lease and the finance company seem a little "draconian" I did not want to risk removing the bumper and associated bits so I worked out I could fit the lower main centre and side vent grilles externally.
This way I could remove them in 5 mins should the need arise.
I have ordered a par of black kidney grilles to fit the mesh internally and the originals can then be easily replaced "untouched " when the car goes back.
Mesh was black aluminium (4mm x 9mm mesh size) sourced from UK flea bay and was cheaper than Halfrauds and I edged it with 6mm edging from same mesh supplier, this was to protect paintwork from cut sharp mesh edges.
full car.JPGfront grille.JPGmain grille.JPG

Side vents had to be done in two pieces per vent due to dam splitter!
Grilles were attached with very thin black cable ties which were more than adequate (use a medium straightened paper clip with a hook bent in it to retrieve the cable ties back through the mesh)
Thanks to the original poster and I hope this helps anyone not wishing to dismantle anything for whatever reason
This is something I must do, I've argued with BMW until I am BMW blue in the face about retrofitting the rock guards but with no joy.
I like the external mesh idea, and appearance, do you have a link to the ebay seller?
Thanks.
 
#14 ·
Excellent guide by Williams327 and bigfoot49 for his tidy fix too. **** poor design and customer support from BMW UK!

Awaiting: M140i SE 5dr auto
Current: Mk2 Skoda Octavia vRS petrol
Previous: Mk2 Golf GTI 8v, Mk1 MR2, Mk2 Golf GTI 16v, Skoda Mk1 Octavia vRS petrol
 
#18 ·
Great right up, I've done this today.
Couple of points to note, the mesh can be had much cheaper off eBay. I managed to get 2 100x40mm sheets delivered for £24. Various sizes are available, but I went for 4x9mm spacing. The other thing is that you can leave the wheels on and just jack the car up until the tyre is just touching to get the arch liners out, there are 10 8mm screw ks to remove each side. I counted them so I knew how many I needed to put back in. I hate having fixings left over! You were right about the bumper to wing screws though. A proper pain to extract and replace. Patience is key here. A head torch was useful though. I did the same as you and covered to panels on the lower part of the bumper but went for the mesh on the front braces, I had shaped some mesh to fit just behind the grills themselves, moulded to the right shape, but then realised I'd have no access to remove the grills without taking all the bumper off again. I'll get some pics up tomorrow when it's not dark. 👍
 
#19 ·
alanf said:
Great right up, I've done this today.
Couple of points to note, the mesh can be had much cheaper off eBay. I managed to get 2 100x40mm sheets delivered for £24. Various sizes are available, but I went for 4x9mm spacing. The other thing is that you can leave the wheels on and just jack the car up until the tyre is just touching to get the arch liners out, there are 10 8mm screw ks to remove each side. I counted them so I knew how many I needed to put back in. I hate having fixings left over! You were right about the bumper to wing screws though. A proper pain to extract and replace. Patience is key here. A head torch was useful though. I did the same as you and covered to panels on the lower part of the bumper but went for the mesh on the front braces, I had shaped some mesh to fit just behind the grills themselves, moulded to the right shape, but then realised I'd have no access to remove the grills without taking all the bumper off again. I'll get some pics up tomorrow when it's not dark. 👍
Excellent :bigsmile: glad the guide was of some use
 
#22 ·
Did mine the same a couple of weekends ago. Not that hard to do and quite satisfying to see the result!

One point of note from hard won experience; make sure you check your front parking sensors (if fitted) are working correctly BEFORE you fully fit the bumper.

Did not fully push the plug home (tight fit) and had what I think is called a 'learning point'!!!
 
#25 ·
Any of you Guys fancy offering this as a service to local forum members ?

I know the guide is amazing and does look straight forward but I would still be pretty nervous about taking my front end off :(

I should get this done as I might take the car on a gentle winter track day soon so no doubt I'll manage to score a few flying stones !
 
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#48 ·
I realise you've probably done this by now but watching it being done gave me a bit more confidence (as well as the great guides already contributed in this thread of course!)

Removing Bumper:

Fitting Mesh:

I'm paranoid about doin anythin like this but it sounds essential so going to attempt next weekend. Not even got the car yet but again, I'm paranoid 😂

Thanks to the op and others who posted!
 
#26 ·