08 650i c crack in front fender - Page 3 - Bimmerfest - BMW Forums



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E63 / E64 6 Series (2004 - 2010)
The E63/E64 BMW 6 Series builds on BMW's sporty heritage with aggressive lines and an incredible motor to back the design up. Available in coupe and convertible trims with a standard 4.8 liter engine producing 360 horsepower and 360 lb-ft of torque, the 6-series is a popular choice that exceeds expectations.

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  #51  
Old 05-09-2018, 12:16 PM
BEBosworth BEBosworth is offline
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Location: Northern New Jersey
 
Join Date: Nov 2011
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Mein Auto: 2008 650i Convertible
Yep, Mine too

Just noticed it after her winter slumber. Car is bone stock with no accidents, rubs, dings, dents, or bumps to the front end. Crack is on the passenger side. How many have to have this occur before BMW does anything? OK, stop laughing.
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  #52  
Old 05-09-2018, 07:09 PM
HerbP HerbP is online now
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Mein Auto: 05 645Ci, 14 750 M-Sport
Found one on mine also recently. It would be interesting to find out why the fender is under so much stress at this point?
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  #53  
Old 08-04-2019, 07:57 AM
pellenils pellenils is offline
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Mein Auto: BMW 645 CSi
3 cracks in my fenders

I have a 2005 645ci coupe and noticed cracks about a year ago. One on each side towards the wi dshield and one larger one on the passenger side towards the middle but we’re all situated at point where the fender bolts on to the car. I have gone to the dealer and they said SOL but think I will try with BMW North America again and see if I can use a little more force this time as I was unsuccessful in my last attempt. My body shop said it was deffinetely because the bulls were originally on to tight.
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  #54  
Old 08-04-2019, 03:10 PM
sierrabob sierrabob is offline
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Mein Auto: 650i Coupe
I also recently noticed the right fender crack on my 2006 650i. The photo is of the right fender bolt just below the windshield. The crack extends about 2 inches (ca. 5 cm) from a stress point created by the flap like design of the plastic itself up and around to the outside. It appears to me that cyclic stress is causing the material to yield. I would use this to argue that BMW should repair this based on a design flaw in the shape of the plastic fender in this area. A flap is going to bend. The design crease in the material makes the split at the 90 degree bend even more likely. Not sure if less torque or more would prevent this result. Are all 6 series cars designed this way? Not good.
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  #55  
Old 08-04-2019, 03:18 PM
HerbP HerbP is online now
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I was lucky & found a used fender for 200.00 on Ebay. I had it painted off the car, then installed it & the paint matched very well. I did not have to blend the clear in on the matching parts.

I did notice when I installed the new fender that the adjustment bolt at the door area, that the bolt was out more than it should have been. As I adjusted the bolt inward, you could see the stress releasing as I brought the fender in to match the door panel. I do believe that there is a stress point somewhere on the frame, that applies pressure at the top of the fender. It is strange that you hear very little about the fenders on the drivers side do not have any problems. Seeing how you have a 2005 with a cracked fender, there is know way BMW could be responsible for a fender cracking after that many years. The bolts need to be installed properly, with 8 NM of torque at each bolt. The fenders are plastic, so they can not take much stress, & the fender bolts & washers must be centered properly. In 14 years, a lot of things could have happened to your car, & previous owners could have loosened or tightened the bolts on the fenders improperly? Watch Ebay for a good used fender to come up for sale, & maybe you will find on the color you need, that want take any paint work. Whether or not you buy a new or used fender, they will both probably need to be painted to match your car. The fender is easy to install, & the replacement cost should be less than 500.00.
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  #56  
Old 08-04-2019, 04:53 PM
sierrabob sierrabob is offline
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Location: California
 
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Mein Auto: 650i Coupe
I am in the hunt for a Titanium Silver right front fender. Thanks for the 8NM spec, Herb. I wonder how many parts to this car essentially float under bolts and washers that must be kept at a Goldilocks torque setting to allow movement that's just about right?
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  #57  
Old 08-04-2019, 06:26 PM
HerbP HerbP is online now
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Mein Auto: 05 645Ci, 14 750 M-Sport
This would basically apply to any of the urethane/plastic body parts. You can repair the fenders, but finding someone to do it correctly might be hard. I didn't want to take a chance of a bad repair, so I searched a while for a nice used part.
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2008 650i, cold, crack, cracked, fender, stress


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