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BMW 3-Series (E90 E92) Forum
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Front ride height after fitting Bilstein B4 on my E90 330i Exclusive RWD
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12-09-2020, 03:57 PM | #23 | |
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01-15-2021, 10:15 PM | #24 |
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I had the exact same issue on my old RWD E90. Installing Bilstein B4 raised the front a VERY noticeable amount. It has nothing to do with settling or new upper mounts. I even swapped out them out with Koni Sport struts while keeping everything else the same and the car was at least 10-15mm lower up front. Went back to B4, and yup, it was raised by that same amount.
The Bilstein B4 front struts WILL raise your front ride height on a RWD E9X. I noticed the exact same thing on my GF's E92 RWD as well when changing to B4s. This has nothing to do with settling or new upper mounts. This is a fact, and I've no idea why this happens with B4s.
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01-19-2021, 05:54 PM | #26 | |
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Not sure where this added ride height is coming from, but there are two different versions of the B4 for the E90 one for standard suspension and one for sport suspension. The bump stops are also different for sport vs non-sport. Now when I bought my 325i it had 220K miles and it was on the original suspension. I replaced front struts with generic Chinese-manufactured complete assemblies and the rear with KYB shocks and it raised my ride height almost 1.5". However I measured the ride height and confirmed that it was exactly as it was supposed to be. After 220K miles the struts, mounts, and bump stops were shot. I suspect the springs may have sagged slightly too. |
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01-19-2021, 07:31 PM | #27 |
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Drives: '05 E90 330i Manual
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My E90, as per my original post, is non sport suspension, so the B4 struts fitted were the corresponding non sport parts. The front upper mounts were still in good condition, just had fresh grease added and were then reused. I did however have to replace all bump stops since they had all pretty much fallen apart.
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01-19-2021, 07:34 PM | #28 | |
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01-20-2021, 12:17 PM | #29 | |
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FWIW, I installed B4 Sport on both cars mentioned above.
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Yup. Something is up there or in the suspension parts in pre- vs. post-LCI cars. Such as the knuckle or top mounts. I know they make different versions of top mounts but I kept those items the same in my trials so that was not the issue...
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01-20-2021, 06:40 PM | #30 | |
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