E86 SE vs SPORT OEM Springs

[Ivesy]

Hi guys just wandering if anyone can advise whether the Coupe SE and Sport used the same springs and if so what those part numbers are. I have just bought a coupe with cheap old rusty coilovers and would like to switch back to OEM plus B6 rear shocks. Just struggling to find the OEM part numbers. Possibly uprate the rear springs as I've heard a couple of times that they can crack.
Any help, suggestions greatfully received. It's gojng to be a daily and I drive through some really poor quality roads.

[wdb]

Have you taken a look on realoem.com yet?

[B328iC]

You can check with these people. https://web.tecalliance.net/lesjofor...6;modelId:5516

[Ivesy]

Originally Posted by wdb

Have you taken a look on realoem.com yet?

Thanks will do

[Ivesy]

Originally Posted by wdb

Have you taken a look on realoem.com yet?

Will do now thanks!

[GuidoK]

Actually for the springs BMW has a separate module in the ETK (Ersatz Teile Katalog = spare parts catalog), that also takes into account what options your car has, as that also can change it's weight considerably.
This is why in realoem etc there are no spring part numbers listed.
So you have to go to your dealer if you want exact information about your specific car and another specific car.
In the past BMW gave the possibility to use a generic guest account to login to their online ETK system, but they cancelled that option a few years ago; they went over to another parts catalog system in which that guest account doesn't work. So if you want that information at home (for free) you have to aqcuire an (old) pirated version of the official ETK.
For access to their current parts catalog system (I assume that it still carries the spring calculator as it's the official BMW portal), you have to pay and I believe meet certain criteria to get an account:
https://aos.bmwgroup.com/web/oss/start

This is a link that elaborates on how the old system worked (if it's any use):
https://blog.fcpeuro.com/repair-reso...g-parts-lookup
The quoted link in here has been changed over the years though; another link directing to the online etk used to be this one (but obviously doesn't work anymore):
https://www.parts.bmwgroup.com/tetis...D=WebETK_START

I don't know how many KN difference there is between the various springs, but something you should never do is replace 1 spring on an axis.

[Ivesy]

Originally Posted by GuidoK

Actually for the springs BMW has a separate module in the ETK (Ersatz Teile Katalog = spare parts catalog), that also takes into account what options your car has, as that also can change it's weight considerably.
This is why in realoem etc there are no spring part numbers listed.
So you have to go to your dealer if you want exact information about your specific car and another specific car.
In the past BMW gave the possibility to use a generic guest account to login to their online ETK system, but they cancelled that option a few years ago; they went over to another parts catalog system in which that guest account doesn't work. So if you want that information at home (for free) you have to aqcuire an (old) pirated version of the official ETK.
For access to their current parts catalog system (I assume that it still carries the spring calculator as it's the official BMW portal), you have to pay and I believe meet certain criteria to get an account:
https://aos.bmwgroup.com/web/oss/start

This is a link that elaborates on how the old system worked (if it's any use):
https://blog.fcpeuro.com/repair-reso...g-parts-lookup
The quoted link in here has been changed over the years though; another link directing to the online etk used to be this one (but obviously doesn't work anymore):
https://www.parts.bmwgroup.com/tetis...D=WebETK_START

I don't know how many KN difference there is between the various springs, but something you should never do is replace 1 spring on an axis.

Agreed. And thanks for your input. I didn't have any luck with the above two links and am still unsure what to do. The car I bought has stance coilover and it drives horribly. I am unsure if the coupe si sport and the coupe SE have different setups, or even if the coupe and roadster have different part numbers. I'm in trouble.