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Shocks & struts question - OEM or other?

Discussion in 'E85 Z4 (2002-2008)' started by alanbrooks, Jul 8, 2023.

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    My 2007 Z4 3.0si has broken rear springs. Seems sensible to replace the struts while replacing the springs... does anyone know if it's worth finding a kit from, say, Bilstein or another aftermarket group, or am I not going to notice the difference between that and OEM? I don't do track, but drive with some enthusiasm as conditions allow. I will say, when i got the car, used, a few years ago the runflats rode like they were made of rock. I lived with it for a while with some sense of disappointment (I've had many BMWs but this is my only Z4, and I was expecting better). Anyway, I finally wore out the tires and replaced them with new P-Zero runflats, and the difference is like night and day. Any major complaints I'd had, had really been associated with old, worn-out rubber, not with run-flats in general. Any residual complaint is probably related to the broken springs, so want to do right by my ride! Thanks for any advice or experience you've had.
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    If you've been happy with the performance and ride quality of stock/oem with your other bimmers, I'd say stick with that. I'd think most aftermarket sport shocks are going to have you unhappy with a stiff suspension ride-quality for the vast majority of your driving. Sport shocks/spring kits, yes, substantial difference - performance, but, at the expense of everyday comfort & usability; inevitable trade-off :)

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