Eibach Springs

[dpgfunk]

EU spec Eibach springs installed, only pics i have for now of front/rear. Perfect amount of drop for my taste. Much prefer these over the US spec. Will try to pics of the whole car soon.

[gatorfast]

What is the EU spec springs? Obv not as much of a drop?

[dpgfunk]

Originally Posted by gatorfast

What is the EU spec springs? Obv not as much of a drop?

20mm front, 5-10mm rear. I believe it's the same as the V1's that were initially released. They were updated here in the US to the V2's but remained the same in Europe. These probably provide the most conservative drop of all the lowering springs. I was primarily looking to minimize the front wheel gap, not so much in the rear as they looked ok to me. These springs fit the bill in my case.

[espressoo]

Originally Posted by dpgfunk

20mm front, 5-10mm rear. I believe it's the same as the V1's that were initially released. They were updated here in the US to the V2's but remained the same in Europe. These probably provide the most conservative drop of all the lowering springs. I was primarily looking to minimize the front wheel gap, not so much in the rear as they looked ok to me. These springs fit the bill in my case.

Did you measure the height of the fenders before and after? The reason I asked is because the rear gap looks pretty big. It would be good to see before and after pics if you had them.

[shay2nak]

Looks like there was no drop at all.

[dpgfunk]

Originally Posted by shay2nak

Looks like there was no drop at all.

I won't deny that it appears that way. It may not fulfill everyone's taste, but I can assure you there is a drop. After reading the early adopters' stories of the rears being raised, I made sure to take some measurements from bottom of rims to fender, before and after. I'm down a little over an inch in front and a little over half in the rear. Will upload pics when I get a chance. Heres one for now after a few days of settling

[rskkm3]

Originally Posted by dpgfunk

I won't deny that it appears that way. It may not fulfill everyone's taste, but I can assure you there is a drop. After reading the early adopters' stories of the rears being raised, I made sure to take some measurements from bottom of rims to fender, before and after. I'm down a little over an inch in front and a little over half in the rear. Will upload pics when I get a chance. Heres one for now after a few days of settling

looks nice
thats what i am looking for.
thanks for the PM

[CanAutM3]

Originally Posted by dpgfunk

I won't deny that it appears that way. It may not fulfill everyone's taste, but I can assure you there is a drop. After reading the early adopters' stories of the rears being raised, I made sure to take some measurements from bottom of rims to fender, before and after. I'm down a little over an inch in front and a little over half in the rear. Will upload pics when I get a chance. Heres one for now after a few days of settling

Just perfect IMO. This is the ride height it should have stock.

[gatorfast]

Originally Posted by dpgfunk

I won't deny that it appears that way. It may not fulfill everyone's taste, but I can assure you there is a drop. After reading the early adopters' stories of the rears being raised, I made sure to take some measurements from bottom of rims to fender, before and after. I'm down a little over an inch in front and a little over half in the rear. Will upload pics when I get a chance. Heres one for now after a few days of settling

Where did you source these EU spec springs from? The drop looks perfect

[dpgfunk]

Ebay seller based out of Germany, I believe the username was tunershop. Arrived to me in 3 days from overseas, pretty impressive ship time.

[Encanto]

Originally Posted by dpgfunk

EU spec Eibach springs installed, only pics i have for now of front/rear. Perfect amount of drop for my taste. Much prefer these over the US spec. Will try to pics of the whole car soon.

Rear springs are higher than OEM, front springs are perfect.

It seems now that Eibach problem was not limited to the USA.

[parabmw]

Any complaints with just eibach springs?
Mild drop and close to stock spring rates should not negatively affect ride quality?

[dpgfunk]

Originally Posted by parabmw

Any complaints with just eibach springs?
Mild drop and close to stock spring rates should not negatively affect ride quality?

Slightly more firm, not a huge difference.

[parabmw]

Originally Posted by dpgfunk

Slightly more firm, not a huge difference.

Did you do icm recalibration? Is it easy?

[boss2k]

Originally Posted by dpgfunk

I won't deny that it appears that way. It may not fulfill everyone's taste, but I can assure you there is a drop. After reading the early adopters' stories of the rears being raised, I made sure to take some measurements from bottom of rims to fender, before and after. I'm down a little over an inch in front and a little over half in the rear. Will upload pics when I get a chance. Heres one for now after a few days of settling

Did you install V1 springs where the rear is higher than stock springs, V2 has resolved this issue

[boss2k]

Bought the Eibach springs , comparison with stock springs are below

OEM spring rates for the F80/F82 is 185 lb/ft Front, 575 lb/ft Rear
OEM COMPETITION PACK spring rates for the F80/F82 is 198 lbs/ft Front, 685 lbs/ft Rear

Eibach spring rates 182lb/ft -- linear front
359-- 628 lb progressive rear

Looks pretty close to stock CP , what u'all think? Will it ride like stock CP and handle better and remove the ugly front gap

[CanAutM3]

Originally Posted by boss2k

Bought the Eibach springs , comparison with stock springs are below

OEM spring rates for the F80/F82 is 185 lb/ft Front, 575 lb/ft Rear
OEM COMPETITION PACK spring rates for the F80/F82 is 198 lbs/ft Front, 685 lbs/ft Rear

Eibach spring rates 182lb/ft -- linear front
359-- 628 lb progressive rear

Looks pretty close to stock CP , what u'all think? Will it ride like stock CP and handle better and remove the ugly front gap

Where did you get that info regarding the spring rates?

It does not jive with what Eibach advertise: https://eibach.com/us/c-178-product-...bmw-m3-m4.html

Further, the Eibach TÜV certification documents specify linear spring rates front and rear on their M3/4 springs: http://www.dvsegmbh.info/PDF/einbau/...E102003109.pdf

[boss2k]

Originally Posted by CanAutM3

Where did you get that info regarding the spring rates?

It does not jive with what Eibach advertise: https://eibach.com/us/c-178-product-...bmw-m3-m4.html

Further, the Eibach TÜV certification documents specify linear spring rates front and rear on their M3/4 springs: http://www.dvsegmbh.info/PDF/einbau/...E102003109.pdf

The 1st link u gave refers to the old part number although the front and rear spring rate match with what I mentioned above and I got it when I called eibach today

I got the stock spring rates from some place on this forum

[gatorfast]

Originally Posted by CanAutM3

Where did you get that info regarding the spring rates?

It does not jive with what Eibach advertise: https://eibach.com/us/c-178-product-...bmw-m3-m4.html

Further, the Eibach TÜV certification documents specify linear spring rates front and rear on their M3/4 springs: http://www.dvsegmbh.info/PDF/einbau/...E102003109.pdf

Interesting stuff. So the Eibach front springs are barely any stiffer than OEM, only about 3%. I know many people have asked on here if it would be ok to install the Eibach front springs only and not the rears since the rear sits pretty nicely at OEM height. Based on this, it seems this may be ok to do since its essentially the same rate at OEM just a tad lower. Thoughts?

[boss2k]

Originally Posted by gatorfast

Interesting stuff. So the Eibach front springs are barely any stiffer than OEM, only about 3%. I know many people have asked on here if it would be ok to install the Eibach front springs only and not the rears since the rear sits pretty nicely at OEM height. Based on this, it seems this may be ok to do since its essentially the same rate at OEM just a tad lower. Thoughts?

why wouldnt you want to drop the rear too, drop is minimal and car looks balanced

[gatorfast]

Originally Posted by boss2k

why wouldnt you want to drop the rear too, drop is minimal and car looks balanced

In my case, I am running a 285/40 rear tire setup which is a bit taller than the stock 275/40 tires so my rear wheel gap is even smaller now, maybe 1/2 - 1 finger gap which is perfect.

[CanAutM3]

Originally Posted by gatorfast

Interesting stuff. So the Eibach front springs are barely any stiffer than OEM, only about 3%. I know many people have asked on here if it would be ok to install the Eibach front springs only and not the rears since the rear sits pretty nicely at OEM height. Based on this, it seems this may be ok to do since its essentially the same rate at OEM just a tad lower. Thoughts?

One of the important benefits I noticed when installing Eibach springs is how they increased the rear spring rates more than the front, which yielded more predictable breakaway characteristics for the rear end.

Interrestingly, BMW did the same with CP spring rates.

So I do not see any advantages of only changing the front springs while keeping the OE rear springs on a base M3/4.