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      06-02-2009, 10:36 PM   #1
radiantm3
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Drives: 2007 Honda S2000, 2017 GT350
Join Date: Sep 2008
Location: Cedar Park, TX

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2011 E92 M3  [9.35]
2014 BMW i3  [10.00]
Rear wheels rubbing on fenders over bumps (stock suspension)

I recently noticed a loud rubbing/scraping sound coming from the back of my car when I drive through some big dips in the road. These aren't potholes or rough bumps. Just uneven pavement that works the suspension a bit. For example, driving slightly downhill pretty quickly and the road dips back up. When the car gets to the bottom of the dip, the shocks rebound or whatever you call it when they compress.

Anyways, I only have 5k miles on my car with stock suspension and 18" breytons. They do stick out closer to the fenders than the stock wheels did and I realized that the tires were hitting and rubbing against the rear fenders. I think one of these days it will start to damage my rear bumper. Does this sound normal? Think there's something wrong with my suspension? I was planning on getting an aftermarket suspension setup, but now I'm worried that a half inch lower will only make this issue worse.

Again, this is not from hitting potholes. These are just dips in the road.
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2011 E92 M3(Sold). 2007 Honda S2000 (Track Car). 2016 Cayman GT4 (Sold). 2017 Shelby GT350 (AKA Crowd Killer).

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