Help with coilover issue
Thread Starter
Driver School Candidate
Joined: Mar 2022
Posts: 16
Likes: 0
From: Lim
Help with coilover issue
Hello guys
Reaching out to guys that maybe dealt with issue like the one i am having,as this problem is driving me nuts.
Car is a 2015 model,TVD option.
I installed(my trusted mechanic did) in one go
-R and T RR racing coilovers(with dual adjustable shocks)
-Upper control arm from RR
-LCA bushing,the red poly version again from RR
From the get go,i had thumping sound from front and back,when hitting medium/large potholes.It was a muted metallic sound,coming from at least three corners of the car,like something was mivingmand hitting (not rubbing sound)
During the next days,the sound from the back suspension evolved into full rattling frenzy even in midlest or road anomalies.The slightest pot would create multiple clacking/full rattle from the back.Noise evolved to be more severe day by day, completely masking the noise of the front.
We raised the car two times to inspect,trying to eliminate the chance or anything rubbing,or anything loose.
Six eyes for hours could not find anything.
There is no obstruction to the suspension movement and no loose joints.
Anyone experience anything or the sort?
This is driving me nuts as car is becoming undrivable.
Real shame as i wanted to talk about the transformation that the upgrades bought to the table(maybe in another thread)
(Spoiler alert: completely transformed the dynamics or the car)
Any ideas? S
Reaching out to guys that maybe dealt with issue like the one i am having,as this problem is driving me nuts.
Car is a 2015 model,TVD option.
I installed(my trusted mechanic did) in one go
-R and T RR racing coilovers(with dual adjustable shocks)
-Upper control arm from RR
-LCA bushing,the red poly version again from RR
From the get go,i had thumping sound from front and back,when hitting medium/large potholes.It was a muted metallic sound,coming from at least three corners of the car,like something was mivingmand hitting (not rubbing sound)
During the next days,the sound from the back suspension evolved into full rattling frenzy even in midlest or road anomalies.The slightest pot would create multiple clacking/full rattle from the back.Noise evolved to be more severe day by day, completely masking the noise of the front.
We raised the car two times to inspect,trying to eliminate the chance or anything rubbing,or anything loose.
Six eyes for hours could not find anything.
There is no obstruction to the suspension movement and no loose joints.
Anyone experience anything or the sort?
This is driving me nuts as car is becoming undrivable.
Real shame as i wanted to talk about the transformation that the upgrades bought to the table(maybe in another thread)
(Spoiler alert: completely transformed the dynamics or the car)
Any ideas? S
Have you reached out to the guys at RR Racing? Have you checked the center top nut? Sounds like that might be loose on at least 3 of the assemblies. Easy to see in the front if you move the car up and down and watch the center nut, it should not move at all.
Maybe give that a try?
Maybe give that a try?
Pit Crew
Joined: Sep 2022
Posts: 132
Likes: 44
From: Kansas City
Is it possible that you got bad parts from RR? Although, that is probably highly unlikely. It could still be the case..
I mean 6 eyes looking and checking for hours, twice. I could be wrong, but it might be bad parts. I'd reach out to RR.
I mean 6 eyes looking and checking for hours, twice. I could be wrong, but it might be bad parts. I'd reach out to RR.
Thread Starter
Driver School Candidate
Joined: Mar 2022
Posts: 16
Likes: 0
From: Lim
That sucks. Something I always worry about before getting coils.
Not sure if you can relate, but I had coils before making clunking noise only when temperatures get cold.
Like mentioned above, reach out RR Racing. Hope you resolve the issue.
Not sure if you can relate, but I had coils before making clunking noise only when temperatures get cold.
Like mentioned above, reach out RR Racing. Hope you resolve the issue.
Thread Starter
Driver School Candidate
Joined: Mar 2022
Posts: 16
Likes: 0
From: Lim
Thanks for the repliesUpdates,
so we torqued the top mount nut,same.
we inserted rubber washer between top mount washer and hat,still same.
Also torqued the top hat fixings,same.
so we torqued the top mount nut,same.
we inserted rubber washer between top mount washer and hat,still same.
Also torqued the top hat fixings,same.
Trending Topics
Sounds like you've checked pretty much everything you can. So have you heard back from RR Racing? This is isn't the first time customers had noise issues with coilovers from them. I'm sure they will take care of the issues, whether figuring out if there's something wrong with the installation or something wrong with the products themselves.
ClubLexus Stories
Celebrating Lexus & Toyota from Around the Globe
8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!
Michael S. Palmer
10 Best Lexus Models No One Remembers
Joe Kucinski
TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing
Michael S. Palmer
Top 10 Lexus & Toyotas to Drive Before You Die!
Joe Kucinski
Top 10 Lexus/Toyotas With The LEAST 5-Year Depreciation
Joe Kucinski
Lexus LC500 Convertible Auction: A Preview of Rising Values?
Brett Foote
GX 550 vs TX 550: Best 3-Row Luxury Lexus Family Hauler
Michael S. Palmer
9 Best Lexus Models You Can Buy for Half Price (And 1 You Shouldn't!)
Joe Kucinski
2026 Lexus NX Buyer's Guide: Models, Features, Prices & More!
Brett Foote
Thread Starter
Driver School Candidate
Joined: Mar 2022
Posts: 16
Likes: 0
From: Lim
In any case ,even the tinyest bump will rattle the car,so spring does not have enough travel to get loose.
Not sure if the OEM hats are compatible,maybe i exchange the hats see if it fixes it but doubt they are compatible..
You cannot really preload the spring as the top ring does not rotate.Never seen that before.
In any case ,even the tinyest bump will rattle the car,so spring does not have enough travel to get loose.
Not sure if the OEM hats are compatible,maybe i exchange the hats see if it fixes it but doubt they are compatible..
In any case ,even the tinyest bump will rattle the car,so spring does not have enough travel to get loose.
Not sure if the OEM hats are compatible,maybe i exchange the hats see if it fixes it but doubt they are compatible..
I never found one, I just ride around like that. Yours sounds more aggressive than mine. If I'm on a flat road there is no noise. I only have a noise when there's dips & bumps. Mine is a rattling sound. I do believe it's because there's no rubber between the car metal and coilover. I took mine apart 3 times thinking I installed them incorrectly but they are correct.
Last edited by Patton6964; Dec 16, 2022 at 12:18 PM.
Advanced
Joined: Aug 2015
Posts: 703
Likes: 158
From: Ontario
Hello guys
Reaching out to guys that maybe dealt with issue like the one i am having,as this problem is driving me nuts.
Car is a 2015 model,TVD option.
I installed(my trusted mechanic did) in one go
-R and T RR racing coilovers(with dual adjustable shocks)
-Upper control arm from RR
-LCA bushing,the red poly version again from RR
From the get go,i had thumping sound from front and back,when hitting medium/large potholes.It was a muted metallic sound,coming from at least three corners of the car,like something was mivingmand hitting (not rubbing sound)
During the next days,the sound from the back suspension evolved into full rattling frenzy even in midlest or road anomalies.The slightest pot would create multiple clacking/full rattle from the back.Noise evolved to be more severe day by day, completely masking the noise of the front.
We raised the car two times to inspect,trying to eliminate the chance or anything rubbing,or anything loose.
Six eyes for hours could not find anything.
There is no obstruction to the suspension movement and no loose joints.
Anyone experience anything or the sort?
This is driving me nuts as car is becoming undrivable.
Real shame as i wanted to talk about the transformation that the upgrades bought to the table(maybe in another thread)
(Spoiler alert: completely transformed the dynamics or the car)
Any ideas? S
Reaching out to guys that maybe dealt with issue like the one i am having,as this problem is driving me nuts.
Car is a 2015 model,TVD option.
I installed(my trusted mechanic did) in one go
-R and T RR racing coilovers(with dual adjustable shocks)
-Upper control arm from RR
-LCA bushing,the red poly version again from RR
From the get go,i had thumping sound from front and back,when hitting medium/large potholes.It was a muted metallic sound,coming from at least three corners of the car,like something was mivingmand hitting (not rubbing sound)
During the next days,the sound from the back suspension evolved into full rattling frenzy even in midlest or road anomalies.The slightest pot would create multiple clacking/full rattle from the back.Noise evolved to be more severe day by day, completely masking the noise of the front.
We raised the car two times to inspect,trying to eliminate the chance or anything rubbing,or anything loose.
Six eyes for hours could not find anything.
There is no obstruction to the suspension movement and no loose joints.
Anyone experience anything or the sort?
This is driving me nuts as car is becoming undrivable.
Real shame as i wanted to talk about the transformation that the upgrades bought to the table(maybe in another thread)
(Spoiler alert: completely transformed the dynamics or the car)
Any ideas? S
when ever I hit certain bumps I will get a knock sound from one side or the other. Sometimes from both. And the colder it is outside, the louder the sound.
I have a different brand of coil overs and this noise predates their install.
I suspect it is the LCA bushing from RR but I have not had a chance to swap them out for OE bushings to see if that corrects it.
Thread Starter
Driver School Candidate
Joined: Mar 2022
Posts: 16
Likes: 0
From: Lim
Hello guys
So update.
After two separate mechanic shops working on the car, reinstalling everything 3 times, everyone that has worked on the car concluded that shocks are at fault. Clacking noise is coming from the shock itself.
I mentioned this to RR and they asked to send them over for check. Let's see.
Huge bummer and hustle , Having six sets of hands working on this for days , big disappointment. Will report.
So update.
After two separate mechanic shops working on the car, reinstalling everything 3 times, everyone that has worked on the car concluded that shocks are at fault. Clacking noise is coming from the shock itself.
I mentioned this to RR and they asked to send them over for check. Let's see.
Huge bummer and hustle , Having six sets of hands working on this for days , big disappointment. Will report.
Advanced
Joined: Jan 2010
Posts: 671
Likes: 120
From: Maryland
This sounds like a top hat bolt issue to me. Depending on the coil, they are finicky, but are issues across the board.
Trying to torque the top nut down without it being underload will typically not give you proper security.
Jack one corner up at the knuckle (wheel off), continue until you see the car start to move. Inspect the top nut to see any movement. With the car supported with jackstands on other parts of the car, drop the jack. See if that moves.
9/10 that is what is causing the clunk. I had it with my CKS coils which are basically the same. If you see movement of the top bolt, re-jack and torque the nut under load.
Hope this helps.
Trying to torque the top nut down without it being underload will typically not give you proper security.
Jack one corner up at the knuckle (wheel off), continue until you see the car start to move. Inspect the top nut to see any movement. With the car supported with jackstands on other parts of the car, drop the jack. See if that moves.
9/10 that is what is causing the clunk. I had it with my CKS coils which are basically the same. If you see movement of the top bolt, re-jack and torque the nut under load.
Hope this helps.