Date: Mon, 19 Jun 2000 01:17:07 -0700 From: TimeRangernopsam.com Subject: Re: 9-5 Brake Dust problem
On Sun, 18 Jun 2000 22:43:06 -0500, Steven Stern <ssternnopsamcop.net> wrote: >I just had my 99 9-5 washed and asked them to try to get the front >rims clean. They were extremely dirty. The car wash guy says that >Saabs dump a lot of brake dust and, over time, the hot dust on the hot >rims will result in pitting. He, of course, recommends frequent >cleaning. However, he was unable to scrub off all the dust and was >reluctant to use "wheel acid" to try to get them completely clean. I >used some Goop Off to remove a bit more of the gunk. > >So... > >Is this really true? > >Is the heavy dusting indicative of a brake problem or is it just how >the brakes are made? > > --Steve Stern Steve, heavy dusting can be attributed to many factors. 1) Climate: Live in a wet area? Discs can and do corrode and this corrosion is rubbed off with each application of the brakes. "Rust" dust is highly abrasive. Live in a dry dusty climate? Dust can also eat away at the pads and rotors. 2) Pad Composition: Some pads are harder/softer than others and have different wear rates. 3) Driving Habits: Are you a "hard-braker"? Do you anticipate things like red lights and stop signs and let the engine slow you down in advance of actual brake application? All of these things have to be considered before "heavy dusting" can be tracked down.
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