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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Polyurethane bushings?



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      03-11-2006, 03:03 PM   #1
Nikki
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Polyurethane bushings?

Does the 330i sport package come with polyurethane bushings, or are they rubber?
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      03-11-2006, 03:46 PM   #2
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I believe they are rubber. Poly dries up really fast and squeeks if not lubed on a regular basis.

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      03-11-2006, 04:06 PM   #3
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Quote:
Originally Posted by HRC
I believe they are rubber. Poly dries up really fast and squeeks if not lubed on a regular basis.

Danny
most good polyurethane bushings have slots that hold grease in them and they're guaranteed not to squeek lifetime.
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      03-11-2006, 04:37 PM   #4
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I had poly bushings on my aftermarket sway's on my old E30 and after a couple of years they did start to squeak pretty bad.

Some of the nicer kits have a fitting to lube the bushings though (my RD bars didn't though)
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      03-11-2006, 05:26 PM   #5
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Quote:
Originally Posted by Nikki
most good polyurethane bushings have slots that hold grease in them and they're guaranteed not to squeek lifetime.
I had neuspeed bars and they had slots in the bushings, and over a period of time, started to make noise...in every car I had them in.

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      03-11-2006, 09:00 PM   #6
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The stock swaybar bushings are a rubber compound. Aftermarket are generally polyurethane. I've had UUC and RD Sport sways on previous bimmers, and they always needed an annual relubing. I think some are getting better, with grease fittings, but they still need regular maintenance.

The end-links also made noise after a while. I had to replace one set of UUC end links after they got contaminants in the ball sleeve (I think it was sand) and nearly seized. I would service them annually as well.

Even with the maintenance, they are totally worth it, if you track or autox your car.
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      03-11-2006, 10:46 PM   #7
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thanks for the info everyone
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