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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 09-24-2004, 09:53 PM   #1 (permalink)
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I'm looking at buying some used M3 coil springs (and shocks/struts) off a 4 door '97 M3, but my car is a '97 328 2 door. I'm pretty sure the 4 door springs will cause it to sit higher used , at least the rear. I currently have the OEM sport suspension and would like to go to a stiffer spring that sits another .5" lower or so. Just don't want to spend money and get something that makes the car sit the same height! I could cough up the extra dough and get the H&R, Eibach, Bavarian Auto, or etc... springs, but these are being offered way cheap.

If anyone knows the exact specs, please share! This could be a good FAQ topic too!

thanks
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Old 09-24-2004, 09:59 PM   #2 (permalink)
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i do believe that there isnt a difference btw the 2
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Old 09-25-2004, 08:06 AM   #3 (permalink)
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Seems the Bentlley book doesn't give spring rates, rather ride heights. There is no difference in ride height between the 2 dr or 4dr, but that still doesn't prove that the springs have the same set load and/or rate. I'm going to call a dealer and check out part numbers.

Weird thing about the Bentley book is the ride heights in the rear are given at Normal load (2 fr, 1 rr passenger + trunk cargo) for the standard and sport us, but gives unladen ride height for the M3. But, for front, it gives all ride heights at normal load. It bit inconsistant and confusing if you aren't reading the asterick comments in fine print!!!

thanks for the reply, e36_m3_turbo, I just need to see the proof!
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Old 09-25-2004, 12:44 PM   #4 (permalink)
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Quote:
Originally posted by CBD328is@Sep 25 2004, 07:06 AM
Seems the Bentlley book doesn't give spring rates, rather ride heights. There is no difference in ride height between the 2 dr or 4dr, but that still doesn't prove that the springs have the same set load and/or rate. I'm going to call a dealer and check out part numbers.

Weird thing about the Bentley book is the ride heights in the rear are given at Normal load (2 fr, 1 rr passenger + trunk cargo) for the standard and sport us, but gives unladen ride height for the M3. But, for front, it gives all ride heights at normal load. It bit inconsistant and confusing if you aren't reading the asterick comments in fine print!!!

thanks for the reply, e36_m3_turbo, I just need to see the proof!
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They are the same. Only I think all "is" come with sports pkg suspension right? I have no idea, but since I sell Bilstein and H&R suspension parts, I know the part numbers are identical.

Just for the record, the 2dr is heavier than the 4 dr.

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Old 09-25-2004, 10:20 PM   #5 (permalink)
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Quote:
Originally posted by Autotechnica@Sep 25 2004, 11:44 AM
They are the same. Only I think all "is" come with sports pkg suspension right? I have no idea, but since I sell Bilstein and H&R suspension parts, I know the part numbers are identical.

Just for the record, the 2dr is heavier than the 4 dr.

Bry
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Well, no, all IS's don't have sport package. There are many 4 doors with sport package and many 2 doors without sport package. IS just means it's a coupe.

Where did you get the figures for the 4 door being lighter??? The only lighter 4 door I've found is the 98 328i (3131lbs) vs. the 328is (3142lbs), all the other models have identical weights....(which I don't really believe either).
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Old 09-25-2004, 10:50 PM   #6 (permalink)
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The sedans tend to be lighter on the e36 because of the true a pillar.

I think some of the weight also comes from most of the IS having sport power and heated seats and lots of the sedans are the bare minimum.

All I know is that my sedan weighs 3010. No lightweight by any means. My goal is to be down around 2800 with spare and rear seat still intact.
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