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E46 Xi Forum
The E46 XI was produced from 01-05 in sedan and touring body styles. Powered by either a 2.5L inline 6 in the 325xi or a 3.0L inline 6 330xi. Discuss all thing about BMW AWD E46 'Xi' here.

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Old 10-22-2010, 01:34 PM   #1
TX_Bullet
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spring swap from a 328ci to an xi?

i have my oem sport suspension sitting in my garage and have been thinking of putting them xi to get a slight drop. I already have the sport struts in the rear and i know the front struts wont fit.

Is this going to be a waste of time or will it actually work out to my benefit?
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Old 10-22-2010, 01:38 PM   #2
mvrk10256
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well the rear has shocks not struts so thats a good place to start. I think the issue you are going to run into is that while the springs will swap directly, and you will get a decent drop compared to stock (Xi is taller than regular which is taller than sport) I have no clue what consequences you will get as a result of the drop. theoretically since you are not slamming the **** out of it, and will actually still have a decent height you may get away with it. but there will be more wear on suspension components.
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Old 10-22-2010, 02:22 PM   #3
Kubica
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Yes you can do it. They will fit and you will be lower.

Should you do it? I can't answer that. I have no idea how the handling will be affected at the limit. If it's a grocery getter and you don't drive fast- go for it. If you are into performance, you need to do a lot more detailed research into spring rates, etc.

Or you could just give it a try, and do as scientific a study on the effects as possible, and then share what you learned.

Botaman has done it- speak with him first.
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Old 10-22-2010, 02:30 PM   #4
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sounds like it will get knocked out this weekend or tonight. I hate how high this car sits and even a descent drop should help.

I will post some pix up of the results. And this is my daily and around here in houston on these freeways 80 is an average speed limit. There are monthly gymkana events here that i have considered going to put all ill do and that tight course is understeer.
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Old 10-22-2010, 03:49 PM   #5
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I was under the impression XI springs are XI specific?
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Old 10-22-2010, 08:13 PM   #6
TX_Bullet
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all i know is that Xi are higher than i's and ci with sport are lower.....so hopefully i get something out of it. Looks like sunday will be the DIY day
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Sometimes the Cheapest quote is the most expensive in the end
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Old 10-23-2010, 08:00 PM   #7
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man i feel retarded......I got no where for three hours so I just put it back together cause I cant figure out how to compress these springs correctly. I have looked at to many DIY and I cant seem to do it right.

Im half way tempted to cut a coil off each spring
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Old 10-24-2010, 12:59 AM   #8
e36-2.0
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i think your better off w/o running these springs anyways... they wouldnt be able to accomodate for the added weight up front.
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Old 10-24-2010, 01:20 AM   #9
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Quote:
Originally Posted by TX_Bullet View Post
man i feel retarded......I got no where for three hours so I just put it back together cause I cant figure out how to compress these springs correctly. I have looked at to many DIY and I cant seem to do it right.

Im half way tempted to cut a coil off each spring
now for the dumb question....

you did use a spring compressor? cause all you gotta do is pull the strut out, then compress the spring, take off the hat, take out the spring, put on the new one, compress, ect ect. for the back I just disconnected the trailing arm which gave me massive droop and then put the springs in there myself.


I would also recommend taking out the 15mm spring pads and replacing them with 5mm non XI ones.
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Old 10-24-2010, 09:22 AM   #10
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I was under the impression XI springs are XI specific?
yes, same here. m3 and xi springs cannot be put on other 3 series. dunno about putting non-m3 springs on an xi or m3
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Old 10-24-2010, 10:04 AM   #11
TurboBimmer
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FWIW, I have B&G lowering springs on my 325xiT with Bilstein shocks. The springs are for a 325i. They fit and lower the car, no problem there. May be the spring rate is a bit different on real xi springs because of the added weight up front, but for a daily driver, the difference won't be noticable.
If your springs are the BMW sport, I think it will only drop 1/2", you won't see a big difference.
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Old 10-24-2010, 06:09 PM   #12
TX_Bullet
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yes i used a spring compressor but when your compressing you need to use 3 coils on each side but the diy on here kept saying 3 on one side and 2 on the other which wasn't working.

Also doing this by myself with hand tools wasn't helping either.
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Sometimes the Cheapest quote is the most expensive in the end
Number of Destroyed Newb Destroyers- 1
The Mods

Power Flex FCAB
Much more coming.....
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Old 10-25-2010, 09:38 PM   #13
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Had grease all on the inside of the rim. All the front boots are messed up
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Originally Posted by jbeurotech View Post
Sometimes the Cheapest quote is the most expensive in the end
Number of Destroyed Newb Destroyers- 1
The Mods

Power Flex FCAB
Much more coming.....
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