Quote:
Originally Posted by ants_oz
I find it amazing that BMW use brake line material that corrodes on your spec vehicles. In Aus, it is a design rule that brake line material must be able to resist corrosion (most Aus spec vehicles use stainless fixed brake lines).
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It is the same brake line material according to the parts book.
The problem isn't the brake line, as noted above. It is the local use of road salt due to icy conditions, which is then trapped by the underbody protection, that causes it. The solution is to use a spray clean underneath the vehicle.
I am guessing you don't use too much road salt in Australia. 
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2007 X3 3.0si, 6 MT, Premium, White
Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue
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