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      03-16-2011, 05:29 AM   #11
doughboy
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Drives: E91 335i Sold.
Join Date: Jan 2009
Location: UK

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The hartge bars I had fitted still use the OE bushes (the rear came with new bushes, but they were still soft rubber), if you fit hard poly type bushes, then yes, you'll have a lot more road noise / vibrations in the cabin.

I never suffered any noise or vibration with the Hartge bars on OE bushes, and the Hartge bars are stiffer than any other brand.