M42club.com - Home of the BMW E30/E36 318i/iS

DISCUSSION => Suspension => Topic started by: n2motorsports on March 05, 2008, 12:30:42 PM

Title: 325i/is springs on 318is
Post by: n2motorsports on March 05, 2008, 12:30:42 PM

I purchased some used vogtland springs to later find out they were made for the 325is.  Looking up Vogtland's website, there are different model numbers for the 2 cars.  

Has anyone installed springs specific for the 325is?  I'm just worried about a very noticable rake (backend much lower than front) due to the extra weight of the m20 engine vs. ours.  Post a pic if you have one.

Thanks.

Title: 325i/is springs on 318is
Post by: n2motorsports on March 06, 2008, 01:00:48 PM

anyone?

Title: 325i/is springs on 318is
Post by: dude8383 on March 06, 2008, 02:07:58 PM

The ride will certainly be stiffer...and you won't get the same drop, maybe a couple of mm's less.

Title: 325i/is springs on 318is
Post by: tjts1 on March 06, 2008, 02:23:14 PM

325 has a lot more weight on the front axle.

Title: 325i/is springs on 318is
Post by: RED IS 91 on March 06, 2008, 04:51:39 PM

Quote from: tjts1;44209

325 has a lot more weight on the front axle.

On the rear axle also with the tar in the trunk .

Title: 325i/is springs on 318is
Post by: n2motorsports on March 06, 2008, 06:41:04 PM

good to know, once i decide between koni's or bilstein's ill install and put up my first pic.

Title: 325i/is springs on 318is
Post by: DaveM-sport on March 15, 2008, 08:10:54 PM

I've heard of people getting 325 H&R cup kits by accident and they get horrible understeer which would be expected.

The shocks for a 325 will be indentical though, just the springs are different.
The M3 springs are exactly the same to the iS ones too by the way

Title: 325i/is springs on 318is
Post by: nomad on June 02, 2008, 10:55:28 AM

So did you install the Vogtlands? How do you like them?
Pics?
I'm torn on vogtlands for a low stiff ride (not a daily) or H&R sports (softer) to keep the oil pan happy.

I'm leaning towards Vogtlands and possibly getting thicker spring pads.

Title: 325i/is springs on 318is
Post by: eric16v on June 02, 2008, 08:49:41 PM

why do you get under steer when you put 325 springs on the 318is? is it because the are stiffer, or?

Title: 325i/is springs on 318is
Post by: KenC on June 03, 2008, 02:07:30 AM

I just installed 325 H&R Sports on my car and it lowered it probably at least 1.5" all around.  With the low oil pan and living in a large city, I don't think I'd want the front any lower.  I think it looks fantastic too.

Title: 325i/is springs on 318is
Post by: 1991318is on June 11, 2008, 02:20:54 AM

Quote from: KenCopperwheat;50516

I just installed 325 H&R Sports on my car and it lowered it probably at least 1.5" all around.  With the low oil pan and living in a large city, I don't think I'd want the front any lower.  I think it looks fantastic too.

I'm runnin the m3 Ireland Engineering stage 3's and got a good drop , not noticably different than the 325's on Ireland's or anything.

Yeah ken, portland roads suck... Ask funk bout me breaking my brand new rieger lip I put on the night before i went to his shop.

Title: springs height is the problem
Post by: vatos_p on June 11, 2008, 04:15:50 AM

i have installed 325 springs on my 318is , and the problem i had is that , because the engine on the 325 is heavyer , the front springs are stiffer , but the rear springs are the same , so the problem that occured is that the front end of the car is higher than the rear end , the front wing has 5cm gap from the wheel and the rear wing has no gap at all...yes the car is stiffer overall but when you look at it , it is not so good.... i had to make some adaptors for the rear springs , so the height of the rear end be the same with the front end...