Re: Springs, explained...again... (archive)

You learn something new every day, especially if you read this board. Anyway, I think that site says the iS and M5 springs are the same (or is it the i and iS?), but I didn't know they were all the same rate. Oh wait, I think the site says the rears are the same. Oh well. Anyway, thanks for clearing that up.

Yes, the rear springs are actually different part numbers, but the same rate. For 535i, 535iS, and M5. The front springs are the same part for all 3. And even the 528e used the same front spring (part number) in some cases.

535ises

LoL I just find this humorous.

What??? :-)

As for your conclusion, in short, yes, the less weight you have pressing down on a spring, the less it well compress. Simple physics. So the 528e, at roughly 200lbs lighter overall than the 535i, will compress their springs less (if fitted with the same spring rate) than the 535i.

Ok, I kinda figured I was right. But, I would imagine that the difference in ride height is negligible, hmm? Either way, my rear (actually, my 528e's rear) is lower than my front, but that's probably because I have the OE springs on there. New Bilsteins w/ ~750 miles on them, but old springs, lol. How much sense does THAT make?

It makes fine sense. Springs, especially BMW ones, don't really fatigue that much. You'll need to either have a really good amount of mileage on them (300+) or really have used/abused the car for the springs to start sagging.

But another thing, the E28 doesn't usually have that much rake. So it always seems (even 535is) to have the front end sit higher than the rear. It's just how the cars appear to be.

Anyway, thanks, as always, to you and Rob for your vast knowledge of these cars. You show, once again, that you have entirely too much time on your hands. . .

. . . that was a joke.

I could tell you to get a life, but then I need to get one, too. . . :-)

OK....Right....ahem..... :-)

Chris Graff
www.m535i.org

Follow Ups:

Re: Springs, explained...again... Brad Couvillon 15:58 9/24/2001 (0)

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