Eibach or H&R springs

[Boone.Msi]

I know, i know people have thousands of post on how they like **** or ****

the only place i could find them at -$245 shipped is tirerack and they cost the same (H&R $3 more)

whats the diff.? dont they lower the same and are both moderatly stiff?

unless anyone can tell me somewhere else to find either of them for cheaper, which should i get.

:D Ive ordered my staggerd 18" M Pars and tires:D

[Anton CH.]

Eibach uses progressive rates in the rear while H&R uses linear. Both use linear rates on the front. I've noticed that Eibach lowers the rear more than H&R. I don't think you can get a definate answer as to which is stiffer as neither manufactur releases the spring rate data and you can't really compare the two by feel unless both cars have the same tires, shocks, etc. But I think the general census is that if you want something more comfortable go with Eibachs and H&R for more sport. You really can't go wrong with either one as both are excellent.

[Dukes]

That's what I hear as well about H&R's. You can't go wrong. I had the H&R Sports in my E36 M3 but in my 530 I have Eibachs. In the M3, those H&R's were stiff as heck. I couldn't wait to get them off. The Eibachs in the E34 makes for a very good solid ride.

I know, I know... two different cars. :)

[SC David]

I think the stiffness depends more on what shocks you're using. My H&R sports really don't feel that much different than the stock springs since I'm using stock replacement shocks.

[Anton CH.]

I think the stiffness depends more on what shocks you're using. My H&R sports really don't feel that much different than the stock springs since I'm using stock replacement shocks.
That's exactly what I thought initially. You can feel that the spring is firmer than stock but its very smooth. What makes cars feel rough are shocks. I'd stay away from bilsteins-if anything they remove grip.

[Yaninnya]

I'd stay away from bilsteins-if anything they remove grip.
What!? Bilsteins are hugely increasing grip.
Jan

[genphreak]

What!? Bilsteins are hugely increasing grip. Jan Just depends on one's POV as to whether you are gripping the road or gripping your ass. Bilsteins can make you do both :D so long as they don't screw up on you like Jeff's ones always do. My 0.02; Sashs kit is the go for any e34. Anything else is mopre expensive and not so perfectly matched.

[Anton CH.]

What!? Bilsteins are hugely increasing grip.
Jan
Stiffer springs/shocks always reduce grip because they don't allow the wheel to follow the road. The fraction of time that your wheel is making contact decreases with increasing stiffness. That is not to say that you don't want a properly matched shock to the spring to control the oscillations.

[ThoreauHD]

I use sachs shocks and the eibach spring set from bavauto. The ride seems pretty decent, but not as good as OE springs for comfort. Although OE costs 2x more. I can't comment on H&R, as I haven't used them.

My ass is OK with eibach, but potholes can do a number on a lowered car. My exhaust had to have new seals/rings/bolts put in from the jarring.

For comfort and a lil sportiness that won't break the bank, I went with eibach and sachs. Heard bad reviews from bilstien shocks. Heard good reviews from h&r and eibach springs. Heard good reviews from sachs(oe) shocks. So I went that route. I'm happy with it. The car does look a bit nicer slightly lowered. And I get a bit better grip on turns. Lower center of gravity.

[genphreak]

So you run the Sashs Sports (red 'turbo' ones #199)? How much is a set of of these now? Can you buy them in pairs or only in fours?

I wish I could understand why the Bilstein Sports are so harsh and Sashs sports are so smooth. But the Billies are stock fitment on Alpina and some M5... weird weird weird, just like Bilstein's inability to supply the right advice in regard to bump stops...

[swenpro]

LOUD NOISES!!





okay, sorry, just finished watching anchorman again

[Monastie]

Stiffer springs/shocks always reduce grip because they don't allow the wheel to follow the road. The fraction of time that your wheel is making contact decreases with increasing stiffness. That is not to say that you don't want a properly matched shock to the spring to control the oscillations.
o_O
say again....

stiffer = less body swing from side to side = more pression on the ground from the tires facing the inside of the turn = more traction

[Monastie]

ps.: correct me if im wrong

[puppypilgrim]

Best combination for performance driving on public roads is Koni Sport (adjustable) and H&R springs.

[jrobbo]

Best combination for performance driving on public roads is Koni Sport (adjustable) and H&R springs.

I agree. I've had both the Eibachs and the H&R's on my M5. The Eibachs bottom out in the front over bumps that the stock springs and the H&R's sail over. I had to run my Koni adjustables at full-soft to stop them from pumping down because the springs were too soft. The H&R's are a lot stiffer in the front than the Eibachs, and about the same as the stock srings. The eibachs sit slightly lower at the rear, both lower the same at the front.

John

[SC David]

I agree. I've had both the Eibachs and the H&R's on my M5. The Eibachs bottom out in the front over bumps that the stock springs and the H&R's sail over. I had to run my Koni adjustables at full-soft to stop them from pumping down because the springs were too soft. The H&R's are a lot stiffer in the front than the Eibachs, and about the same as the stock srings. The eibachs sit slightly lower at the rear, both lower the same at the front.

John
Now that my setup is entirely broken in, I bottom out when I drive the car really hard over bad bumps, so it's just further proof that it's not the H&R's or Eibachs, but rather the shocks. With the stock springs, I never used to bottom out.

[Yaninnya]

Stiffer springs/shocks always reduce grip because they don't allow the wheel to follow the road. The fraction of time that your wheel is making contact decreases with increasing stiffness. That is not to say that you don't want a properly matched shock to the spring to control the oscillations.
So the worn shocks shoud increase the grip, right? :)

[jrobbo]

Now that my setup is entirely broken in, I bottom out when I drive the car really hard over bad bumps, so it's just further proof that it's not the H&R's or Eibachs, but rather the shocks. With the stock springs, I never used to bottom out.

That's not the case with me. I've got Koni Adjustable shocks on the front that are less than 12 months old, and used them with both sets of springs. With the eibach springs, I had to have the shocks set to fully soft to stop them pumping down (ie. the spring wasn't strong enough to fight against the stronger rebound damping when the shocks were set harder). With the H&R's, I can run the shocks at fully firm if I wan't with no i'll effect. I tend to run the shocks at 1 turn back from fully firm for standard use.

John

[Triton540i]

I just installed Koni fully adjustable in all four corners with H&R springs earlier this spring. I run the Konis at full stiffness while running 225/60 R15 Continentals for give and deformation in hard cornering, I don't think I would run it any other way! Larger rims would equal more rolling mass, harsher ride and less forgiving cornering, at least that's the way I look at it. I've beat several rice burners into submission in cornering, feeling like I had to get out of the car to push them out of the way in some cases... but never felt out of control myself. The car seems to drift when pushed hard, but it's not out of control. I frequently take corners on our highways listed at 35mph at over 85mph without sliding or loss of grip. With that being said, I'm happy with my decision in the Koni/H&R combo. You can spend your money on something else and might be happy with that too, but you've gotta find whatever combination works best for your kind of driving... I like what I drive, it works the best for me! :)

-Eric