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Old 06-20-2008, 08:49 AM   #1
girolamo
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Off-track control arm damage?

Hi,
I took my e46 M3 out to the track last weekend and spun off the track at ~70 mph with the driver's side going first. There were no curbs, and the field I went into was smooth. The slide pulled the two driver's side tires from the bead on the rims, flatting them, and after I got that fixed I found there was a clunking noise coming from the left front. Checking the suspension there, I found the inner ball joint was shot but the rotor seemed tight on the wheel. I have a very slight grinding sound coming from somewhere, and I'm wondering if the wheel bearings could have been affected, even though they seem tight and frictionless when spun?

Thanks,
Jerry
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Old 06-20-2008, 01:22 PM   #2
vaio76109
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Are you sure its not the sound of the pads dragging lightly?
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Old 06-20-2008, 09:02 PM   #3
girolamo
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Could be, but I have never heard it before. It isn't modulated when I apply the brakes...wouldn't that cause it to stop?
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Old 06-20-2008, 09:50 PM   #4
vaio76109
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Yes it would. Maybe a rock stuck in between the rotor and backing plate?

OT-What track was this at?
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Old 06-21-2008, 08:00 AM   #5
girolamo
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I'll look under it today. I am thinking that since it wasn't brake modulated that it may be a result of the control arm inner bearing failure, and I am just hearing road noise directly through metal. The noise is really more like a hum than scraping.

This was at Harris Hill Road, the new track in San Marcos. Nice 1.8 mile road course, in the process of gathering members...and I went off coming out of turn 3.
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Old 07-07-2008, 02:02 PM   #6
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http://www.witchdoctormotorsports.com/ch108pic09.jpg
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