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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 02-03-2013, 08:35 PM
stjosw335i stjosw335i is offline
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Location: Melbourne
 
Join Date: Feb 2013
Posts: 2
Mein Auto: 335i M Sport Coupe (E92)
Angry Rusty Wheel Hubs on my 335i M Sport coupe

6 months after picking up my new 335i I started to see rust appearing on the wheel hubs and brake calipers. The impact is visibly worse with the 19" M Sport wheels. I've booked the car in for it's scheduled service and I will be certainly mentioning something to the service dept. Anyone had this experience and how did you go with the Service Dept?

Surely BMW should be doing something about this? It is such a poor look on what should be a great looking vehicle. Not happy!!!!
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  #2  
Old 02-03-2013, 08:55 PM
Princeton Princeton is offline
Princeton
Location: Princeton, New Jersey
 
Join Date: Jan 2008
Posts: 268
Mein Auto: 2008 335cxi
Use high temp brake grease on the hub face (where it contacts the wheel) so that they don't stick together. I don't understand caliper rust. I doubt that the dealer will do anything. Keep us informed.
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  #3  
Old 02-04-2013, 04:20 AM
Phil325i Phil325i is offline
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Mein Auto: 325i E92 Coupe
At the risk of sounding like a BMW technician - 'they all do that guv' (and that's not just BMWs). The only way to prevent it long term is to sand off all the corrosion and paint with high temp paint. Do it yourself - the dealer will charge you a fortune as it's labor-intensive...
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  #4  
Old 02-04-2013, 04:42 AM
hondo402000 hondo402000 is offline
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Mein Auto: 2007-335 HTC
yep un protected cast iron rust, sand it and paint it, clear if you want or wipe down the area with a cloth with WD 40, it will slow down the rusting

Hondo
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  #5  
Old 02-04-2013, 02:40 PM
stjosw335i stjosw335i is offline
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Location: Melbourne
 
Join Date: Feb 2013
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Mein Auto: 335i M Sport Coupe (E92)
Thanks for the feedback guys, I'll take your advice and get onto it.
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  #6  
Old 02-05-2013, 11:40 AM
RBinDC RBinDC is offline
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Location: Washington DC Area
 
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Mein Auto: 335is Coupe
Quote:
Originally Posted by Phil325i View Post
At the risk of sounding like a BMW technician - 'they all do that guv' (and that's not just BMWs). The only way to prevent it long term is to sand off all the corrosion and paint with high temp paint. Do it yourself - the dealer will charge you a fortune as it's labor-intensive...
Oh, s**t! Another thing to worry about.
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  #7  
Old 02-05-2013, 07:15 PM
B-737 B-737 is offline
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Location: Jersey Shore
 
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Mein Auto: 993 6MT
your dealer doesnt give a rats ass.... this happens on most cars...
remove wheels, sand them with wire wheel and face mask, prep, and paint them with POR-20 or another quality high temp paint or clear...
POR-20 requires the paint to be baked in after applying...




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  #8  
Old 02-06-2013, 04:11 PM
RBinDC RBinDC is offline
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Location: Washington DC Area
 
Join Date: Aug 2010
Posts: 984
Mein Auto: 335is Coupe
Quote:
Originally Posted by B-737 View Post
your dealer doesnt give a rats ass.... this happens on most cars...
remove wheels, sand them with wire wheel and face mask, prep, and paint them with POR-20 or another quality high temp paint or clear...
POR-20 requires the paint to be baked in after applying...
Looks like a lot of work. Bavarian Autosport sells powder-coated caliper covers (in black, red, silver and carbon fiber colors) that can be mounted in 10 minutes (so Bav claims) and will improve heat dissipation (se Bav claims). However someone has posted that the BMW dealers will claim that using caliper covers will void the factory warrantee on the brakes.

See: blog.bavauto.com/go/calipercovers

Bav Auto also sells caliper paint, which may not require baking.

Anyone care to comment on the caliper cover warrantee issue?
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