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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > e93 n55- Replacing sport suspension with non-sport suspension.



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      05-06-2018, 06:54 PM   #1
coolcaeser
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e93 n55- Replacing sport suspension with non-sport suspension.

so my struts were leaking, and I got all 4 (front struts + rear shocks) changed with Bilstein4, since he said that Bilstein are new OE suspension and cheaper/last longer than OE Sachs one.
Once he put i, I started feeling the road more and even on a slightest bump, I would feel my car jumping more. The mechanic said that's normal for bilstein suspension because my sports car original ride is bumpy. I believed him, and didn't worry about the bumpy ride thereafter.

now it's been 6 months with 8k miles already on it, now I went to a different mechanic to get my tire change, he noticed that the previous shop put in non-sports suspension even though my car has sports package, and he says that maybe because of that, I have a bumpy ride.

I went back to the suspension guy and he says that struts/shocks doesn't make a ride bumpy and if he replaces it with the sports one, then I would feel even more bumpiness and roughness.

So my question is, is he saying truth? and putting up non-sports on sports car, is all ok? or should I pressurize him to replace it with sports one?
Also if I do get him to put sports, then will my car become more rough?

I have a convertible E93 with N55 engine with sports package (not M sports).
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      05-08-2018, 10:24 PM   #2
chris@strutmonkey
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To be honest, he should have put in Bilstein B4 sports shocks. However, the differene in ride is not that significant and the non-sport shocks will fit fine. Not clear to me what the "jumping" is about. I would need to know what other parts were replaced to help more, for example, did he use non-sport bumpstops?


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Originally Posted by coolcaeser View Post
so my struts were leaking, and I got all 4 (front struts + rear shocks) changed with Bilstein4, since he said that Bilstein are new OE suspension and cheaper/last longer than OE Sachs one.
Once he put i, I started feeling the road more and even on a slightest bump, I would feel my car jumping more. The mechanic said that's normal for bilstein suspension because my sports car original ride is bumpy. I believed him, and didn't worry about the bumpy ride thereafter.

now it's been 6 months with 8k miles already on it, now I went to a different mechanic to get my tire change, he noticed that the previous shop put in non-sports suspension even though my car has sports package, and he says that maybe because of that, I have a bumpy ride.

I went back to the suspension guy and he says that struts/shocks doesn't make a ride bumpy and if he replaces it with the sports one, then I would feel even more bumpiness and roughness.

So my question is, is he saying truth? and putting up non-sports on sports car, is all ok? or should I pressurize him to replace it with sports one?
Also if I do get him to put sports, then will my car become more rough?

I have a convertible E93 with N55 engine with sports package (not M sports).
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      05-13-2018, 11:34 PM   #3
coolcaeser
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I think he must have used the non-sport bumpstops (will ask him in a day or two). he also changed the two front control arms.
by jumpiness, I meant, even on a minor bump, I would feel the bump as if it was a big one. I also feel the rough roads more as compared to my original ride. Since it's a local shop, so he did not give me the list of all the components that he replaced during suspension change, but I can ask him.
If I force him to replace my suspension with sports one, do you think it might make my ride better, especially on bumps/rough roads?
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      05-16-2018, 04:47 PM   #4
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Any other suggestion anyone?
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      06-04-2018, 11:23 PM   #5
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Sounds like possibly incorrect bumpstops or a bad install. Maybe the control arms weren't preloaded and are twisting? That's certainly not normal. The only time I've gotten the loud 'crunch' on potholes and bumps is when I was too low and had almost no bump travel off of the stops. I raised my front end 19mm and it rides like a dream even though I'm still significantly lower than stock.
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