Are the X5/X3 less rust prone compared to other cars?

[onthefence]

Are these cars particularly NOT rust-prone ? I looked at the underside of my X3 and it looks pretty darn clean for 10 years and 100k miles in the NE.

[andrewwynn]

Of the 4700# empty weight of my 2001s, approximately 6# of that is rust. They are amazingly rust free. Due in large part to the quantity of parts that are aluminum in the chassis.

[bhennrich]

Originally Posted by andrewwynn

Of the 4700# empty weight of my 2001s, approximately 6# of that is rust. They are amazingly rust free. Due in large part to the quantity of parts that are aluminum in the chassis.

Except the brake lines!

[StephenVA]

[andrewwynn]

I removed about 1/4 of the rust on my truck when I replaced the rear brakes lines last year.

edit: I didn't see the mention of the brake lines above when I wrote this post. I'm being almost literal they are definitely the most rusty item on the car.

[onthefence]

So, a good PM item is to just replace all brake lines?

[andrewwynn]

I wouldn't bother but I would definitely treat them with rust treatment like naval jelly and the coat with maybe Rust-Oleum paint.

Find my thread on replacing rear brake lines. It shows exactly where to expect failure. Treat that spot you'll not need to replace them.

[onthefence]

Will do.
I will smear the lines with grease

[onthefence]

Could not find your brake line thread in your profile history

[andrewwynn]

My mistake I hijacked somebody else's thread:

Panic Stop, now no brakes and Puddle of fluid?
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