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      06-04-2019, 03:00 PM   #1
jkoral
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Replacements for BMW Performance Shocks?

I've had the BMW Performance suspension on my 135i since new. I'm at 84K now and my right front strut blew out.

My understanding is the BMW Performance struts are NLA (though the springs can be found).

My mechanic recommended replacing all 4 corners with Koni Sports. I do not track this car, it's my daily driver. I've been happy with the BMW Performance suspension and the springs have a perfect drop (for me).

Does anyone have different/additional advice rather than replacing with Koni Sports?
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      06-04-2019, 03:23 PM   #2
asbrr
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Koni sports are a good choice - they are adjustable also, you'll need to adjust the rear before they go in so do a bit of research on what levels people are running before you put them in. They should come set to the "middle" from the factory, I just can't say how that matches up to the BMW performance shocks.

Another alternative is the Bilstein B8 Sport dampers, these are not adjustable but will match up with the performance springs.

The Koni's have a different feel from the Bilsteins, it's somewhat a personal preference thing so dig around on some posts of people that have compared both. Adjusted appropriately, Konis probably offer a smoother ride on pockmarked/bad roads as they tend to "round off" bumps a bit better. The Bilsteins have good body control and are generally known to be very "fast", some people don't like their dampening characteristics so it comes down to preference.

While you are swapping dampers, you should also look to refresh the small/cheap rubber parts in the suspension, like spring pads, shock mounts etc. These are wear / replace items. ECS tuning / Turner sell "refresh" kits, or you can buy the pieces you want to replace individually by doing a bit of research on the parts. For example, you won't need bump stops for the Bilstein front struts, as they are an inverted design with an internal bumpstop - so don't buy those bumpstops if you go Bilstein....


Lots of posts/info on this forum, will require a bit of digging.
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      06-04-2019, 04:57 PM   #3
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There are also the Koni Special Actives. Here is a thread about running them with the PS springs and PS/Z8 bump stops. I haven't driven in a car with that set up but it's one of the setups I was considering before I went with the Ohlins.

https://www.1addicts.com/forums/show...32#post9429330
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      06-04-2019, 05:15 PM   #4
gjm120
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I really like my setup - Koni sports and BMWP springs. I've tweaked the settings on the dampers a few times and think I got them just right for me. The rears are a bit of a job to adjust but not that bad. Worst thing is the #$@ trunk liner.
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      06-04-2019, 05:39 PM   #5
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I would get air ride with active dampers.
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      06-05-2019, 08:22 AM   #6
fast1eddy
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I'm facing the same problem. My M Performance shocks aren't blown yet but they are getting worn. I'm gonna try the Koni Special Active when I replace them. If they work as advertised they should be ideal for what I want. Good handling without compromising ride.
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