Issue with BC BR extreme low coilovers - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

86TruenoFRS · 08-15-2013, 05:00 PM

ok so I installed my BC extreme low coilovers this past weekend and so far im having an issue that that is almost unbareable... I had them built w/ 10k springs front and rear. my issue is my car bounces like crazy in the rear. this isnt my first eperience with coilovers so i know there is an issue. Its like there is no dampening going on in the rear. Ive adjusted dampening several times and nothing has helped... Its like i purchased a set of $200 ebay coilovers. If anyone has any insight i would greatly appreciate it. I installed them myself and it was a pretty straight forward install. Idk if there is something i could check or adjust to help this issue...

Cjymiller · 08-15-2013, 05:21 PM

I have no experience with suspension but I know that the stock spring rates are far less than 10k. 2.3k front 3.8k rear is the stock setup. Is the fact that your spring rate is so much higher the reason that your car is jumping? Why did you increase your spring rate over 300%? Your new setup seems awful stiff.

asdf · 08-15-2013, 05:34 PM

not familiar w/ bc products aside from seeing the name everywhere, but do they revalve their shocks to match w/ the higher spring rates? i would be doubtful but again, i'm not familiar with the brand

Draco-REX · 08-15-2013, 05:36 PM

Have someone watch the car from the outside. You need to determine if the bouncing is from the suspension traveling up and down, or if it's the car bouncing on the tires.

Personally I think 10K rates is crazy high for street use.

SmsAlSuwaidi · 08-15-2013, 05:38 PM

@636 @SLICVIC and a few others can chime in

86TruenoFRS · 08-15-2013, 06:03 PM

I spoke w/ @636 and he said his is bouncy as well. but i would like to hear what SLIVIC has to say...

86TruenoFRS · 08-15-2013, 06:05 PM

Quote:

Originally Posted by Draco-REX

Have someone watch the car from the outside. You need to determine if the bouncing is from the suspension traveling up and down, or if it's the car bouncing on the tires.

Personally I think 10K rates is crazy high for street use.

I ran 10k springs on my previous car (s2000) and the ride quality seemed so much better. I was running Megan Racing Street series on the s2k so it wasnt like I was running high end coilovers

CSG Mike · 08-15-2013, 06:27 PM

Quote:

Originally Posted by 86TruenoFRS

ok so I installed my BC extreme low coilovers this past weekend and so far im having an issue that that is almost unbareable... I had them built w/ 10k springs front and rear. my issue is my car bounces like crazy in the rear. this isnt my first eperience with coilovers so i know there is an issue. Its like there is no dampening going on in the rear. Ive adjusted dampening several times and nothing has helped... Its like i purchased a set of $200 ebay coilovers. If anyone has any insight i would greatly appreciate it. I installed them myself and it was a pretty straight forward install. Idk if there is something i could check or adjust to help this issue...

You did buy Ebay coilovers...

Sounds like you need far, far more damping in the rear. Keep adjusting the damping up and hope that it works.

Vten · 08-15-2013, 06:30 PM

I have bc br with swift 8/8k springs Upgrade, there's a time that I wish I opted for a softer spring rate. So I can imagine 10k would be super stiff....

SLICVIC · 08-15-2013, 08:43 PM

uh.. i guess mine is bouncy. It really depends on personal opinion? i have 10k all around , dampening on full stiff all around. Kinda too soft for my fitment thinking about doing 15K maybe idk

Turdinator · 08-16-2013, 12:49 AM

OP, have you checked whether the car is sitting on some sort of bumpstop in the rear?

636 · 08-16-2013, 01:46 AM

Quote:

Originally Posted by CSG Mike

You did buy Ebay coilovers...

Sounds like you need far, far more damping in the rear. Keep adjusting the damping up and hope that it works.

He said its LIKE he bought Ebay coilovers, re-read it.

And, I just don't know if you're used to having such a light car with such stiff springs, It's normal. Rode like this on my civic with 24k.

qijian · 08-16-2013, 02:41 AM

its normal. I had buddyclub rsd 10k/15k on my civic and its stiff... still is. Riding in my FRS is like rolling around in a cloud compared to the vic.

Jarumie42172 · 08-16-2013, 04:06 AM

Same I have the same extreme drop with 10k my dampening is set to 25 all around and yap my car is bouncy too, thinking its from the stiff springs is all.

08-15-2013, 05:00 PM	#1
86TruenoFRS Senior Member Join Date: Jul 2013 Drives: Rocket Bunny v1 FRS Location: Warner Robins, Ga Posts: 287 Thanks: 73 Thanked 100 Times in 60 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Issue with BC BR extreme low coilovers ok so I installed my BC extreme low coilovers this past weekend and so far im having an issue that that is almost unbareable... I had them built w/ 10k springs front and rear. my issue is my car bounces like crazy in the rear. this isnt my first eperience with coilovers so i know there is an issue. Its like there is no dampening going on in the rear. Ive adjusted dampening several times and nothing has helped... Its like i purchased a set of $200 ebay coilovers. If anyone has any insight i would greatly appreciate it. I installed them myself and it was a pretty straight forward install. Idk if there is something i could check or adjust to help this issue...

08-15-2013, 05:38 PM	#5
SmsAlSuwaidi Boosted Join Date: Feb 2013 Drives: Not a supra....yet Location: Riverside,CA/ Abu Dhabi,UAE Posts: 2,925 Thanks: 487 Thanked 1,203 Times in 812 Posts Mentioned: 90 Post(s) Tagged: 2 Thread(s)	@636 @SLICVIC and a few others can chime in __________________ https://www.facebook.com/Smsalsuwaidiracing/

08-15-2013, 08:43 PM	#10
SLICVIC Senior Member Join Date: Aug 2012 Drives: 2006 STi Location: NYC Posts: 589 Thanks: 495 Thanked 444 Times in 210 Posts Mentioned: 40 Post(s) Tagged: 0 Thread(s)	uh.. i guess mine is bouncy. It really depends on personal opinion? i have 10k all around , dampening on full stiff all around. Kinda too soft for my fitment thinking about doing 15K maybe idk __________________ Instagramz: VicMoralLess http://www.stancenation.com/2012/09/...ed-subaru-sti/

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Coilovers Coilovers, Coilovers: Tein, KW, BC, D2, Cusco, Eibach + more FREE SHIPPING!	No Limit Motorsport	Brakes, Suspension, Chassis	204	05-26-2017 01:09 PM
RS*R SUPER DOWN SPRINGS AND COILOVER AND MORE!	ExtremeAutowerks	Brakes, Suspension, Chassis	32	12-23-2013 03:39 PM
BC Racing Extreme Drop Coilovers	636	Suspension \| Chassis \| Brakes -- Sponsored by 949 Racing	60	10-16-2013 12:42 PM
BC BR Extreme Low Coilovers install pics	86TruenoFRS	Suspension \| Chassis \| Brakes -- Sponsored by 949 Racing	30	08-22-2013 02:44 PM
Stance coilovers lowering issue	Dispect	Suspension \| Chassis \| Brakes -- Sponsored by 949 Racing	2	08-07-2013 12:05 AM

08-15-2013, 05:34 PM	#3
asdf Loading...████████] 99% Join Date: Jul 2013 Drives: #0517 Location: southern california Posts: 586 Thanks: 227 Thanked 251 Times in 171 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	not familiar w/ bc products aside from seeing the name everywhere, but do they revalve their shocks to match w/ the higher spring rates? i would be doubtful but again, i'm not familiar with the brand

08-15-2013, 05:36 PM	#4
Draco-REX Corner Junkie Join Date: Feb 2012 Drives: 13 BRZ, 11 STI, 99 RS Location: Ohio Posts: 2,908 Thanks: 129 Thanked 1,521 Times in 702 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	Have someone watch the car from the outside. You need to determine if the bouncing is from the suspension traveling up and down, or if it's the car bouncing on the tires. Personally I think 10K rates is crazy high for street use.

08-15-2013, 06:03 PM	#6
86TruenoFRS Senior Member Join Date: Jul 2013 Drives: Rocket Bunny v1 FRS Location: Warner Robins, Ga Posts: 287 Thanks: 73 Thanked 100 Times in 60 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I spoke w/ @636 and he said his is bouncy as well. but i would like to hear what SLIVIC has to say...

08-15-2013, 06:30 PM	#9
Vten Senior Member Join Date: Aug 2012 Drives: Too heavy Location: Columbus Posts: 788 Thanks: 91 Thanked 288 Times in 186 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	I have bc br with swift 8/8k springs Upgrade, there's a time that I wish I opted for a softer spring rate. So I can imagine 10k would be super stiff....

08-16-2013, 02:41 AM	#13
qijian Senior Member Join Date: Dec 2012 Drives: FRS Location: Buena park Posts: 216 Thanks: 28 Thanked 30 Times in 24 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	its normal. I had buddyclub rsd 10k/15k on my civic and its stiff... still is. Riding in my FRS is like rolling around in a cloud compared to the vic.

08-16-2013, 04:06 AM	#14
Jarumie42172 Senior Member Join Date: Oct 2012 Drives: 1992 BMW E36 325i, 2013 Scion Frs Location: Las Vegas Posts: 147 Thanks: 55 Thanked 127 Times in 62 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	Same I have the same extreme drop with 10k my dampening is set to 25 all around and yap my car is bouncy too, thinking its from the stiff springs is all.

User Name		Remember Me?
Password