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Discussion Starter · #1 ·
Hey all,

I've got a set of the Eibach PRO Kit lowering springs (E10-42-047-05-22) installed on my '20 VN, and I've recently developed some issues with a pretty harsh creaking noise coming from all corners of the car. It's hard to notice on the highway, but as soon as you're in the city, it's every little bump that sets it off.

Had a mechanic check it out, but nothing's off with the suspension components themselves, no leaks, no breaks, no bends, just this infernal noise. Has anyone else had this issue, and if you did, what was the solve?
 

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Discussion Starter · #3 ·
Did you make sure you tightened down all fasteners with the suspension loaded first?
The shop that did it says they did. The one thing I'm suspecting that they didn't do is trim the bump stops the 20mm that the install guide says they're supposed to.
 

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Hey all,

I've got a set of the Eibach PRO Kit lowering springs (E10-42-047-05-22) installed on my '20 VN, and I've recently developed some issues with a pretty harsh creaking noise coming from all corners of the car. It's hard to notice on the highway, but as soon as you're in the city, it's every little bump that sets it off.

Had a mechanic check it out, but nothing's off with the suspension components themselves, no leaks, no breaks, no bends, just this infernal noise. Has anyone else had this issue, and if you did, what was the solve?
I had the same issue especially the rear left. It drove crazy. Had Eibach put the oem ones in and they said it was coil slap. But yeah the Eibach's will do that. Nothing bad is happening cause I drove mine from Texas to Cali with those springs but they do clunk like crazy. Hope this helps.
-Chris
 

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There shouldn’t be any noise with the Eibach springs. If you’re comfortable bringing it up with the shop again, that’s probably the best route. If the shop installed them correctly then potentially there is a defect in the springs themselves. Either way, hope you are able to get it sorted out.
 

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Discussion Starter · #6 ·
I had the same issue especially the rear left. It drove crazy. Had Eibach put the oem ones in and they said it was coil slap. But yeah the Eibach's will do that. Nothing bad is happening cause I drove mine from Texas to Cali with those springs but they do clunk like crazy. Hope this helps.
-Chris
Dude I made that same drive, there and back, with no real issues, it's just unnerving as all hell. I'm taking it back to the shop tomorrow, I'll ask them about coil slap. Was there anything they could do to fix it?
 

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Dude I made that same drive, there and back, with no real issues, it's just unnerving as all hell. I'm taking it back to the shop tomorrow, I'll ask them about coil slap. Was there anything they could do to fix it?
Honestly I just went back to stock. Did not want to deal with the slap plus increased potential in scrapping in LA/
 

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Generally, if you're getting creaking and knocking is because the springs are not seated correctly in the spring perches. As the suspension moves the springs rotate in the perch. Another issue can be the spring haven't been allowed to sag properly over a specific period of time.

There shouldn't be any creaking or knocking once the springs have been installed properly. All the original strut bearings, spring
 

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Dude I made that same drive, there and back, with no real issues, it's just unnerving as all hell. I'm taking it back to the shop tomorrow, I'll ask them about coil slap. Was there anything they could do to fix it?
Did you find the ride quality to be more harsh on the eibach's? I was talking to guy in Korea the other day on instagram and asked him if he would choose EIBACH and he said def not. He said their spring rate is not compatible w/ our damper settings. He said it would be "way too hard."

He answered a lot of my questions which was nice. I was wanting to go with EIBACH because it isnt a super aggressive drop. Perhaps his opinion is different than yours. I would like to get as many opinions as possible.

Because he owns a custom shop and does a lot of modding perhaps he is use to a softer ride?

Here is his insta account name if you want to check him out. INsta @chuchuxhu_.

Thanks for taking time to read and I look forward to getting your opinion.

-JE
 

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Discussion Starter · #11 ·
Did you find the ride quality to be more harsh on the eibach's? I was talking to guy in Korea the other day on instagram and asked him if he would choose EIBACH and he said def not. He said their spring rate is not compatible w/ our damper settings. He said it would be "way too hard."

He answered a lot of my questions which was nice. I was wanting to go with EIBACH because it isnt a super aggressive drop. Perhaps his opinion is different than yours. I would like to get as many opinions as possible.

Because he owns a custom shop and does a lot of modding perhaps he is use to a softer ride?

Here is his insta account name if you want to check him out. INsta @chuchuxhu_.

Thanks for taking time to read and I look forward to getting your opinion.

-JE
I wouldn't say it's punishingly harsh, but you do feel a lot more of the road. I would say it's like running on Sport mode in Normal, Sport+ in Sport, and basically solid in Sport+ or N mode. The main benefits are the slight lowering, makes the car look a little more aggressive, turn-in is a bit sharper (to me, obviously YMMV), braking is better, and highway mileage is well improved (32-34mpg pretty consistently)

Generally, if you're getting creaking and knocking is because the springs are not seated correctly in the spring perches. As the suspension moves the springs rotate in the perch. Another issue can be the spring haven't been allowed to sag properly over a specific period of time.

There shouldn't be any creaking or knocking once the springs have been installed properly. All the original strut bearings, spring
The springs are seated correctly, they're not moving around at all, and nothing is broken, bent, or leaking. What it seems to be is the rubber in the top strut mounts making noise. I was planning on replacing them anyway with the Whiteline strut mounts, so I'll probably do that as well as the control arm bushings while it's up in the air.
 
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Well there are several things to look at then;
1. Make sure the Bearing-Strut and Pad-Front Spring, Upper are correctly in place.

2. Check that the swaybar end links are not bound in anyway. If they are, they will definately cause a creak/and clunk.

3. Check the Pad-Front Spring, Lower and see if they are intact and installed correctly.

4. Likewise, check the rear as well for the appropriate Pad-Rear Spring, Upper & Bumper-Rubber .

5. Make sure the bump stops are in place as required, on all four corners.

6. Make sure the Strut and rear shock Flange Bolts are properly torqued both front and rear. If they were simply installed and over tightened, this will also contribute to any creaking/clunking as they are bingin in the mounts.

Note; Keep in mind lowering the car will change the overall geometry of the suspension and other adjustments need to be made as well. Personally, I'm betting the endlinks are binding on the sway bars but that's simply a best guess.

If they're moving around in the Insulator Assy-Strut with the bearing and pad in place, then the spring tops were improperly wound. If they didn't reinstall the spring pads along with the strut bearings, they will definately creak and clunk. The spring tops should fill the gaps and fit snuggly, top and bottom in their respective perches and against the spring stops.

This is a long shot; did they happen to leave the spring compressors inplace? It's pretty obvious but still something that needs to be checked. They have to utilize them to get the springs in position.

Last thing, did you verify the part numbers for the front and rear springs from Eibach when they came out o the box? Manufactures have been know to box up the wrong springs on occasion. Just because the box signifies a particular spring, doesn't necessarily mean the right spring got into the right box. There's always the possibility they boxed up a set of R-Spec or Veloster Springs by accident. There is one number difference between the two. One is an 04 and the VN is an 05. The numbers are stamped on the springs and there is also a manufacturers tag on the individual springs, make sure you double check the number.

Personally, I'd take it to another suspension specialist and let them look at the install as is. Sounds like something is installed improperly or missing. Lowering springs do not clunk or creak if installed like the OEM units utilizing the OEM parts I've already commented to above. I've never heard any lowering springs creak/clunk, if fitted or installed properly.

You've got a million mile warranty for the springs, so no worries but you need to get them looked at directly.
 

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Discussion Starter · #13 ·
Well there are several things to look at then;
1. Make sure the Bearing-Strut and Pad-Front Spring, Upper are correctly in place.

2. Check that the swaybar end links are not bound in anyway. If they are, they will definately cause a creak/and clunk.

3. Check the Pad-Front Spring, Lower and see if they are intact and installed correctly.

4. Likewise, check the rear as well for the appropriate Pad-Rear Spring, Upper & Bumper-Rubber .

5. Make sure the bump stops are in place as required, on all four corners.

6. Make sure the Strut and rear shock Flange Bolts are properly torqued both front and rear. If they were simply installed and over tightened, this will also contribute to any creaking/clunking as they are bingin in the mounts.

Note; Keep in mind lowering the car will change the overall geometry of the suspension and other adjustments need to be made as well. Personally, I'm betting the endlinks are binding on the sway bars but that's simply a best guess.

If they're moving around in the Insulator Assy-Strut with the bearing and pad in place, then the spring tops were improperly wound. If they didn't reinstall the spring pads along with the strut bearings, they will definately creak and clunk. The spring tops should fill the gaps and fit snuggly, top and bottom in their respective perches and against the spring stops.

This is a long shot; did they happen to leave the spring compressors inplace? It's pretty obvious but still something that needs to be checked. They have to utilize them to get the springs in position.

Last thing, did you verify the part numbers for the front and rear springs from Eibach when they came out o the box? Manufactures have been know to box up the wrong springs on occasion. Just because the box signifies a particular spring, doesn't necessarily mean the right spring got into the right box. There's always the possibility they boxed up a set of R-Spec or Veloster Springs by accident. There is one number difference between the two. One is an 04 and the VN is an 05. The numbers are stamped on the springs and there is also a manufacturers tag on the individual springs, make sure you double check the number.

Personally, I'd take it to another suspension specialist and let them look at the install as is. Sounds like something is installed improperly or missing. Lowering springs do not clunk or creak if installed like the OEM units utilizing the OEM parts I've already commented to above. I've never heard any lowering springs creak/clunk, if fitted or installed properly.

You've got a million mile warranty for the springs, so no worries but you need to get them looked at directly.
Yeah, I'm not overly concerned, since I'm working remotely and I don't have to drive anywhere very often. The shop that's taking care of the car now is one that customizes and maintains cars like a 2017 Lamborghini Huracan Super Trofeo and a couple of McLaren GT3 cars, so I have no concerns about technical aptitude and attention to detail. I'll send this on to them and see if they can take a look this week, thanks for the advice!

To clarify/simplify, the noise is only reproduced when the suspension travel is up/down, there's no odd feelings in the steering, the car tracks dead-on straight, and I haven't been able to break the front end loose in a corner as of yet.
 
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