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      08-15-2010, 10:40 PM   #1
dekaliber
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Can an M owner measure the rivets in their front wheel well?

Looking for someone who has an M who knows 100% that they have never had any sort of front bumper work done to chime in here...

Could you measure the width of the 4 rivets on the inside of the front wheel well, fastening the wheel well lining to the front bumper?


(original photo by mister_roger, sorry for borrowing it)

I'd like to know if it's 15mm or 20mm.

The 20 mm ones are these blind rivets, which is what I found on my car. However, I think the previous owner had the original bumper resprayed, so I don't know if these were the same ones used from the factory. I was told by the parts person at my dealership that they should be these push-pin rivets, which are 15mm wide and match the ones shown in mister_roger's DIY. However, I'm not sure if the M's use the same ones.

I ordered the latter (the blind rivets are single-use), but they almost seem a little small for the holes and don't seem to secure as tightly as the blind rivets that were there before.
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      08-15-2010, 11:49 PM   #2
aerobod
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Quote:
Originally Posted by dekaliber View Post
Looking for someone who has an M who knows 100% that they have never had any sort of front bumper work done to chime in here...

Could you measure the width of the 4 rivets on the inside of the front wheel well, fastening the wheel well lining to the front bumper?


(original photo by mister_roger, sorry for borrowing it)

I'd like to know if it's 15mm or 20mm.

The 20 mm ones are these blind rivets, which is what I found on my car. However, I think the previous owner had the original bumper resprayed, so I don't know if these were the same ones used from the factory. I was told by the parts person at my dealership that they should be these push-pin rivets, which are 15mm wide and match the ones shown in mister_roger's DIY. However, I'm not sure if the M's use the same ones.

I ordered the latter (the blind rivets are single-use), but they almost seem a little small for the holes and don't seem to secure as tightly as the blind rivets that were there before.
All 20mm on mine, bumper never removed.
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      08-16-2010, 10:34 AM   #3
Ron Stygar
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Quote:
Originally Posted by aerobod View Post
All 20mm on mine, bumper never removed.
Mine are 15mm.
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      08-16-2010, 10:41 AM   #4
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Mine are 20mm. Don't know if bumper had been removed or not.
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      08-16-2010, 10:48 AM   #5
Ron Stygar
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Quote:
Originally Posted by RBull View Post
Mine are 20mm. Don't know if bumper had been removed or not.
http://www.bimmerfest.com/forums/sho...8&postcount=48
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      08-16-2010, 10:57 AM   #6
dekaliber
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Thanks everyone for your input. Maybe I should just pay my local dealer a visit so I can see everything in person. I feel silly for paying so much attention to such a small part.

Quote:
Originally Posted by Ron Stygar View Post
Ron, there appears to be a 2nd style of pop rivet without the beveled edge (middle one in the post you linked to). The PN is 51717002953.

I came across it while dismantling the underbody cover. There are two of these securing this metal tab underneath (#25 in the following diagram):

http://www.realoem.com/bmw/showparts...60&hg=51&fg=15

They are identical to the rivets that were holding my bumper to the wheel well lining, and measure 20mm across.
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      08-16-2010, 12:34 PM   #7
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Quote:
Originally Posted by dekaliber View Post

They are identical to the rivets that were holding my bumper to the wheel well lining, and measure 20mm across.
They were pop rivets there?
OK.

What came with my car follows the parts data.

Rivet 296 for the wheel well to the bumper: Item 10 quantity eight.

http://www.realoem.com/bmw/showparts...41&fg=10&hl=16

Pop rivet 274 item 11 quantity two:

http://www.realoem.com/bmw/showparts...51&fg=75&hl=26
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      08-16-2010, 12:54 PM   #8
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Interesting... I wonder if something changed between the production years (but you think that'd be reflected on realOEM). aerobod -- is your car an '07 too?

When I tried the 15mm rivets, the seem to fit a little loosely. Not to the point where they'd fall out or anything, but I could pinch together the wheel well lining and the outside of the bumper and wiggle the rivet loose without popping out the center portion.
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      08-16-2010, 02:46 PM   #9
Ron Stygar
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Quote:
Originally Posted by dekaliber View Post
Interesting... I wonder if something changed between the production years (but you think that'd be reflected on realOEM). aerobod -- is your car an '07 too?

When I tried the 15mm rivets, the seem to fit a little loosely. Not to the point where they'd fall out or anything, but I could pinch together the wheel well lining and the outside of the bumper and wiggle the rivet loose without popping out the center portion.
From damage they look under 51 bumper and come up with pop rivet 953.

The following shows what you mentioned on 953 (Three item 9's).

http://www.penskeparts.com/DiagramsR...iagram=51_4952
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      08-16-2010, 11:46 PM   #10
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Quote:
Originally Posted by dekaliber View Post
Interesting... I wonder if something changed between the production years (but you think that'd be reflected on realOEM). aerobod -- is your car an '07 too?
Yes, mine is a 2007 (March production). 4x 20mm plastic rivets on each side of the bumper to attach the liner.
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