Compiled Coilover Information
I actually was speaking with Figs for a bit, the 16 springs were backordered a few weeks when I was ordering and I figured I would try the 18/14 set up. I was originally going with 16/12 on BC BR but upgrade to DS because of the stiffer spring. Depending if you prefer stiff or soft,,, 20/16 sounds pretty stiff o.o
Does anyone here have a pair of swift springs16k (or close for BC coils) that they're looking to get rid of?
Thanks! I've emailed Figs to get some guidance and really appreciate the feedback here and I misunderstood your response. I thought you wanted the ISF to be stiffer, but sounds like you were referring to your IS350.
Does anyone here have a pair of swift springs16k (or close for BC coils) that they're looking to get rid of?
Does anyone here have a pair of swift springs16k (or close for BC coils) that they're looking to get rid of?
I'm on BC BR + Swift 14/12 on my IS350 at 100k~ miles with no issues
My IS F is on BC DS + Swift 18/14 and rides smoother (dampening) at near stiffest setting than my IS350. 15clicks (about half) softness was super cush and comfortable but I prefer it to be stiffer.
Both cars are set about 2 finger gap all around.
Very happy with both, mostly just street and spirited corners with occasional canyons
My IS F is on BC DS + Swift 18/14 and rides smoother (dampening) at near stiffest setting than my IS350. 15clicks (about half) softness was super cush and comfortable but I prefer it to be stiffer.
Both cars are set about 2 finger gap all around.
Very happy with both, mostly just street and spirited corners with occasional canyons
Advanced
Joined: Jan 2017
Posts: 596
Likes: 154
From: AZ
I'm on BC BR + Swift 14/12 on my IS350 at 100k~ miles with no issues
My IS F is on BC DS + Swift 18/14 and rides smoother (dampening) at near stiffest setting than my IS350. 15clicks (about half) softness was super cush and comfortable but I prefer it to be stiffer.
Both cars are set about 2 finger gap all around.
Very happy with both, mostly just street and spirited corners with occasional canyons
My IS F is on BC DS + Swift 18/14 and rides smoother (dampening) at near stiffest setting than my IS350. 15clicks (about half) softness was super cush and comfortable but I prefer it to be stiffer.
Both cars are set about 2 finger gap all around.
Very happy with both, mostly just street and spirited corners with occasional canyons
Intermediate
Joined: Feb 2013
Posts: 470
Likes: 511
From: ca
They ride softer and more comfortable than the BR and other ISF/RCF/GSF owners have ridden/drove my car and like them too, The BRs are generally pretty smooth but can get harsh, bouncy at times, the DS seem to be more soft/smooth bouncy. I'm about 10 clicks from the top. I tried 15 clicks from the top and it basically was really smooth and not bouncy but since I do like to the hit the corners I stiffened up the clicks a bit. Might try to go even stiffer this weekend as last weekend I hit the canyons and my street/cruising setting was a bit softer than I liked.
Not sure if it helps but some vid of the canyon "bounce" for reference
Not sure if it helps but some vid of the canyon "bounce" for reference
Last edited by bakalag; Jul 10, 2023 at 10:32 AM.
Glad to hear your opinion of them riding softer than the BR but better overall. I had 14/12 BRs but they are shot and I am upgrading to the 18/14 DS that you have now. Ordered about 4 weeks ago so hopefully they will be ready soon.
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Driver
Joined: Feb 2019
Posts: 70
Likes: 25
From: New Jersey/Florida
Again thinking about suspension because the front wheel gap drives me crazy on stock 08 suspension. Those of you on coilovers, what tire/wheel size are you running and did how much did you have to modify? I'm currently on 18x10 wheels with 275/35/18 tires. This works on stock suspension without any modifications, but I do rub in the rear on big dips in the road or small dips if i have people sitting in the back (I barely have people in the back so I'm fine with this). Ideally, I would like to get rid of the front wheel gap and keep the rear basically how it is. Would changing to 265 tires help enough to be worth it (buying new tires soon anyway)? Is fender rolling going to be a must for going lower in the front? What about removing wheel well liners? Any info would be appreciated, I was most likely looking at the Figs BC ER series
Again thinking about suspension because the front wheel gap drives me crazy on stock 08 suspension. Those of you on coilovers, what tire/wheel size are you running and did how much did you have to modify? I'm currently on 18x10 wheels with 275/35/18 tires. This works on stock suspension without any modifications, but I do rub in the rear on big dips in the road or small dips if i have people sitting in the back (I barely have people in the back so I'm fine with this). Ideally, I would like to get rid of the front wheel gap and keep the rear basically how it is. Would changing to 265 tires help enough to be worth it (buying new tires soon anyway)? Is fender rolling going to be a must for going lower in the front? What about removing wheel well liners? Any info would be appreciated, I was most likely looking at the Figs BC ER series
Again thinking about suspension because the front wheel gap drives me crazy on stock 08 suspension. Those of you on coilovers, what tire/wheel size are you running and did how much did you have to modify? I'm currently on 18x10 wheels with 275/35/18 tires. This works on stock suspension without any modifications, but I do rub in the rear on big dips in the road or small dips if i have people sitting in the back (I barely have people in the back so I'm fine with this). Ideally, I would like to get rid of the front wheel gap and keep the rear basically how it is. Would changing to 265 tires help enough to be worth it (buying new tires soon anyway)? Is fender rolling going to be a must for going lower in the front? What about removing wheel well liners? Any info would be appreciated, I was most likely looking at the Figs BC ER series
You didn't say what offsets you're running on those wheels. You should be doing okay with a +35 - + 40. We typically stick with 9.5" rim with +35os.
Have a look at our R3 Road and Track coilovers that we designed for the ISF. We designed the Ultra Digressive valving using Penske research and technology. This valving allows for a wide range of dampening with each click. It also means you will have good low speed bump compliance and responsive high speed cornering. Some of these coilovers (Like the ones you mentioned) still retain a divorced spring setup and are not a true coilover. Check out our reviews on the product page and see what people are saying on Social Media.
https://www.rr-racing.com/RR-Racing-...isxfsur304.htm
-Justin
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Driver
Joined: Feb 2019
Posts: 70
Likes: 25
From: New Jersey/Florida
You didn't say what offsets you're running on those wheels. You should be doing okay with a +35 - + 40. We typically stick with 9.5" rim with +35os.
Have a look at our R3 Road and Track coilovers that we designed for the ISF. We designed the Ultra Digressive valving using Penske research and technology. This valving allows for a wide range of dampening with each click. It also means you will have good low speed bump compliance and responsive high speed cornering. Some of these coilovers (Like the ones you mentioned) still retain a divorced spring setup and are not a true coilover. Check out our reviews on the product page and see what people are saying on Social Media.
https://www.rr-racing.com/RR-Racing-...isxfsur304.htm
-Justin
Have a look at our R3 Road and Track coilovers that we designed for the ISF. We designed the Ultra Digressive valving using Penske research and technology. This valving allows for a wide range of dampening with each click. It also means you will have good low speed bump compliance and responsive high speed cornering. Some of these coilovers (Like the ones you mentioned) still retain a divorced spring setup and are not a true coilover. Check out our reviews on the product page and see what people are saying on Social Media.
https://www.rr-racing.com/RR-Racing-...isxfsur304.htm
-Justin
I'm breezing through ISF, RCF, IS500, 2IS, 3IS, 4IS all day, every day. It happens. -Justin
__________________
We Engineer Track Proven Upgrades For Your Lexus!
SUPERCHARGERS : ECU TUNING : SUSPENSION : EXHAUST : PPE MASTER DEALER
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Tom2769
IS F (2008-2014)
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Sep 16, 2016 10:25 AM