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  #1  
Old 01-13-2022, 03:53 PM
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Copper vs Galvanized Steel Brake Lines

Hi everyone,
During the brake pad & rotor replacement on my 2004 X5, 3i, I noticed the brake hose on the rear wheels are badly corroded. So I ordered new ones from local Napa. The small piece in the middle of the new hose is made of galvanized steel. The original is made of copper. So I thought I'd give a try anyway. I replaced the left rear. It wasn't a perfect fit but it went fine.
For the rear right, the condition wasn't much different. I don't want to replace this one the new one. There's no leak and everything else looks fine. It was such a mess and pain to replace the first one.
The copper tubing has been there all these years and are still intact.
I'm seeking your advice to see whether I made right or wrong decision to replace the hose preemptively with a galv. steel tubing. Where I live, all winter we have lots of salt on the roads.
Have a look at the picture attached of the one I took out and please tell me your thoughts.
Thanks.
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Old 01-13-2022, 03:57 PM
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Coated steel is reasonably durable. Galvanized would be a lot less durable than the usual coating that they put on steel lines. Is it really galvanized, or the green plasticky coating?
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Old 01-13-2022, 04:04 PM
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Quote:
Originally Posted by nick325xit 5spd View Post
Coated steel is reasonably durable. Galvanized would be a lot less durable than the usual coating that they put on steel lines. Is it really galvanized, or the green plasticky coating?
This what it looks like. It's totally greyish.
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Old 01-13-2022, 04:50 PM
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Hard to tell in a picture. That's not as nice as what I'd want to use, but I wouldn't pull it off. Odds are that it'll last longer than you need it to.
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Old 01-13-2022, 05:06 PM
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Thank you for your response.
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Old 01-13-2022, 08:18 PM
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I replaced both main lines for the rear on my e53. I used nicop and saw no reason to use anything else.


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Old 01-13-2022, 08:39 PM
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Old 01-14-2022, 08:22 AM
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Nickel/Copper from American Grease Stick is very good. You can get them with the 10mm fittings BMW uses. Either directly from their website, or from the Advance Auto website.
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Old 01-14-2022, 03:48 PM
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Isn't the OP talking about the semi-flexible section near the wheel? Less choice when looking at those...
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