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Old 11-28-2008, 01:50 PM   #1
topnotchraly
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Need to know front/rear weight of 328i

If someone has an e36 and has, like me, gone to the weigh station on Sunday (when it's closed, but they leave the scales on), and weighed it...I'd like to know the front/rear weights. Here's why...

I want to stiffen my 97 318i just a bit but I do NOT want to lower it. I have a set of Bilstein sport shocks, now I need to find springs that are stiff but not lower (can't be bought ) I have bought a set of M-tech factory sport springs from a 98 328i. If I put them in I expect they will raise the front of the car, so I plan to cut them a bit....to know how much I need to know the weight of a 328i on the front and rear. Knowing this any my own weights I think I can calculate how much to cut of the fronts. I think (hope) the rears will be ok as they are because they can't be cut as then ends are shaped.

Any help appreciated.

Thanks,
James
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Old 11-28-2008, 02:01 PM   #2
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51/49.
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Old 11-28-2008, 02:35 PM   #3
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get coilovers.
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Old 11-28-2008, 03:44 PM   #4
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51/49.
Thanks, but I need actual weights (lbs/kgs) to do the calculations. Can you tell me the weight of a 328? 3200 lbs?
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Old 11-28-2008, 03:45 PM   #5
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get coilovers.
My money tree died a few months back.
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Old 11-29-2008, 07:29 AM   #6
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my 328 IS was scaled at 1415 kg. I don't know if the 4 doors is lighter or heavier tho.
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Old 11-29-2008, 08:54 AM   #7
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well just a little math
the curb weight of a 97 318i 4 door is 2866lbs.... now curb weight is your car fully loaded.

51% front is 1461.6 and 49% rear is 1404.4
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Old 11-29-2008, 10:14 AM   #8
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well just a little math
the curb weight of a 97 318i 4 door is 2866lbs.... now curb weight is your car fully loaded.

51% front is 1461.6 and 49% rear is 1404.4
Yes, this. I assumed that you could find the curb weight on your own, not that hard to pull up.
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Old 11-29-2008, 01:36 PM   #9
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You can trim the rear springs just make sure you do the bottom not the tops as the tops need to stay on the centering post.
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Old 11-29-2008, 01:39 PM   #10
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Cutting springs affects their rate. Makes them stiffer, but usually not in a good way, especially on progressive springs. Just be aware of that.
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Old 11-30-2008, 02:05 PM   #11
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Cutting springs affects their rate. Makes them stiffer, but usually not in a good way, especially on progressive springs. Just be aware of that.
I am aware of that but it's a good thing to post for other readers who might not be. As these are quite large springs (6 coils) and only need to cut off about 1/2 a coil (I suspect), the rate is only going to increase by less than 10% so I don't see it being an issue.

Also, to the poster about the rear springs...no sure what you have but my rear springs are tight coiled at both ends, so there's no way to cut them. I've had a good look at the rears and compared them to a set of Eibach Sport 318i springs I have and I'm optomistic that the rear (M-tech 328 springs) will be perfect for my 318 (to give same ride height but higher spring rate).

THANKS FOR EVERYONE'S INPUT! I'll let you know how it all turns out in a few weeks. I need a few more bits and bobs to put the whole thing together.
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Old 12-02-2008, 12:32 AM   #12
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^^^ 318 or 328, unless sport model it's the same sping.
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Old 12-03-2008, 09:34 AM   #13
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Edit:didn't read all the posts before posting

You can't cut the springs because they are mac's, the spring gets tighter around the shock to fit around the shock mount so if you cut your springs they won't fit properly because of the way they're shaped.

They are basically shaped like a baloon, ( ) so the top and bottom are wound tighter.

Get H&R OEsports the drop is really small (0.25") and you'll have your stiffer ride...Even the normal HR sport don't even drop your car 1.5 inches. Why don't you want to drop your car anyways?

Last edited by Cdn328is; 12-03-2008 at 09:46 AM.
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Old 12-03-2008, 10:32 AM   #14
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Quote:
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^^^ 318 or 328, unless sport model it's the same sping.
That's an interesting theory that I'd like to test.

I have one set of M-Tech sport 328 springs (1996) which have one red paint mark (on several coils).
I have one set of stock 318i springs (1997) which have one light blue or cyan mark.

Anybody with a stock 328 care to have a look at the paint marks on the front springs?

Thank,
James
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