Official spring data from Swift is here!

IND-Distribution · 06-30-2015, 01:19 PM

After a considerable wait, we have confirmed the official data on Swift's M3/M4 lowering springs for the F8x cars.

Swift Japan has been a leader in spring technology since the company's inception in 1997. Swift has engineering backing from one of the largest spring manufacturers in Japan, their parent company Tokyo Hatsujo corporation. Swift's spring technology allows for an excellent control of spring rate, spring travel, and response, while maintaining the lowest possible spring weight. This reduction of spring weight translates directly into lower overall unsprung weight and better vehicle handling and ride quality. Swift's proprietary HS5.TW alloy is specifically designed to balance these characteristics.

Swift's M4 springs come in a 279 lbs/inch front rate, and a 726 lbs/inch rear rate, and will lower the car by 1.1 inch in front and .9 inches in the rear for an attractive but reasonable drop. The M3 springs are a bit more conservative, with a 268 lbs/inch front rate, a 715 lbs/inch rear rate, and a 1 inch drop in front and .4 inch drop in the rear.

Spring data:

M4
Rate
Front

279 lbs/in
5.0 kg/mm

Rear
726 lbs/in
13.0 kg/mm

Drop
Front
-1.1 in
-28mm

Rear
-0.9
-23mm

M3
Rate
Front

268 lbs/in
4.8 kg/mm

Rear
715 lbs/in
12.8 kg/mm

Drop
Front
-1.0 in
-25mm

Rear
-0.4
-10mm

Never Convicted · 06-30-2015, 01:41 PM

Any idea when you'll have them, Ilia?

JTO24 · 06-30-2015, 01:55 PM

This is only for the M4, correct? I thought the M3's drop spring rates were to be slightly less aggressive.

IND-Distribution · 06-30-2015, 02:01 PM

Quote:

Originally Posted by Never Convicted

Any idea when you'll have them, Ilia?

There's an inbound shipment from Japan now- I'm waiting for confirmation of ETA. I hope to have a good ETA in hand this week.

At this point, I'm excited to have confirmed spring rates and drops! These springs have been in the pipeline for so long that I'm happy to have accurate data on those base attributes in hand.

Quote:

Originally Posted by JTO24

This is only for the M4, correct? I thought the M3's drop spring rates were to be slightly less aggressive.

Correct, the M3 rates are slightly different. I'll edit my original post to include that info also.

Rate
Front

268 lbs/in
4.8 kg/mm

Rear
715 lbs/in
12.8 kg/mm

Drop
Front
-1.0 in
-25mm

Rear
-0.4
-10mm

dmk08 · 06-30-2015, 02:34 PM

Crazy that the M3 has been out so much longer than the RCF but yet both springs are coming out at the same time.

http://www.clublexus.com/forums/rc-f...-released.html

Never Convicted · 06-30-2015, 03:37 PM

Quote:

Originally Posted by Ilia@IND

There's an inbound shipment from Japan now- I'm waiting for confirmation of ETA. I hope to have a good ETA in hand this week.

At this point, I'm excited to have confirmed spring rates and drops! These springs have been in the pipeline for so long that I'm happy to have accurate data on those base attributes in hand.

Correct, the M3 rates are slightly different. I'll edit my original post to include that info also.

Rate
Front

268 lbs/in
4.8 kg/mm

Rear
715 lbs/in
12.8 kg/mm

Drop
Front
-1.0 in
-25mm

Rear
-0.4
-10mm

Thanks. Very much appreciate the info.

x.shell · 06-30-2015, 04:05 PM

Awesome!!!! The rates and drop specs look perfect. Excited and giddy.

pikkagtr · 06-30-2015, 04:08 PM

I'm assuming going with m4 springs on an m3 is OK if you wanted then more aggressive rates and drop?

sA x sKy · 06-30-2015, 04:29 PM

Sweet.. So we can expect orders within the next two weeks? So glad I waited now..

supremepower · 06-30-2015, 04:31 PM

Nice

About time Swift!!

RocketBoots · 07-01-2015, 09:42 AM

Do you have the OEM spring rates? Would be nice to see a side/side comparo.

JTO24 · 07-01-2015, 10:45 AM

Quote:

Originally Posted by RocketBoots

Do you have the OEM spring rates? Would be nice to see a side/side comparo.

According to HP Autosport-

For comparison:

185 lb/in Stock M3/4 Front Springs
575 lb/in Stock M4/4 Rear Springs

dog_dealer · 07-01-2015, 11:40 AM

finally!!!

CSanto · 07-01-2015, 12:53 PM

Quote:

Originally Posted by JTO24

According to HP Autosport-

For comparison:

185 lb/in Stock M3/4 Front Springs
575 lb/in Stock M4/4 Rear Springs

For people familiar the rear spring seems to increase quite a bit, what kind of increase to the stiffness should we expect.

Also Ilia PM me with a price and when these are available and if we can pre order them.

Thanks!

JTO24 · 07-01-2015, 01:07 PM

Quote:

Originally Posted by CSanto

For people familiar the rear spring seems to increase quite a bit, what kind of increase to the stiffness should we expect.

Also Ilia PM me with a price and when these are available and if we can pre order them.

Thanks!

I'm torn between these and the Eibach US spec. The Eibachs seem more NJ road friendly with the drop but I'm not sure lol

IND-Distribution · 07-01-2015, 02:03 PM

Quote:

Originally Posted by Never Convicted

Thanks. Very much appreciate the info.

I'm happy to help!

Quote:

Originally Posted by ex o

Awesome!!!! The rates and drop specs look perfect. Excited and giddy.

These springs should feel as nice as lowering springs can, given the base restrictions of using a lowering spring instead of a matched spring and damper (full coilover) setup.

Quote:

Originally Posted by pikkagtr

I'm assuming going with m4 springs on an m3 is OK if you wanted then more aggressive rates and drop?

It's possible, but someone would have to give it a shot and see how that combination feels on an M3.

Quote:

Originally Posted by sA x sKy

Sweet.. So we can expect orders within the next two weeks? So glad I waited now..

Swift's shipment is inbound now. I should have a specific ETA this week, and will make an announcement at that time.

Quote:

Originally Posted by RocketBoots

Do you have the OEM spring rates? Would be nice to see a side/side comparo.

Quote:

Originally Posted by JTO24

According to HP Autosport-

For comparison:

185 lb/in Stock M3/4 Front Springs
575 lb/in Stock M4/4 Rear Springs

Thank you!

Quote:

Originally Posted by dog_dealer

finally!!!

Quote:

Originally Posted by CSanto

For people familiar the rear spring seems to increase quite a bit, what kind of increase to the stiffness should we expect.

Also Ilia PM me with a price and when these are available and if we can pre order them.

Thanks!

The increase in spring rate is relatively proportional. I believe the increased rate is within the OE damper's capacity to control, and shouldn't pose any issues. I'll shoot you a PM!

Quote:

Originally Posted by JTO24

I'm torn between these and the Eibach US spec. The Eibachs seem more NJ road friendly with the drop but I'm not sure lol

The Swift drop is relatively mild as well, I think. Most of our clients that are using a full coilover are going substantially lower than 1" in front, but this is also a matter of taste, of course.

Jaymax85 · 07-01-2015, 04:08 PM

sign me UPPPPP the drop sounds PERFECT!

CSanto · 07-01-2015, 04:12 PM

Quote:

Originally Posted by JTO24

I'm torn between these and the Eibach US spec. The Eibachs seem more NJ road friendly with the drop but I'm not sure lol

I thought they lowered more than these.

Do you have an M4 or M3?

JTO24 · 07-01-2015, 05:09 PM

Quote:

Originally Posted by CSanto

I thought they lowered more than these.

Do you have an M4 or M3?

I have an m3 and the swifts drop 1" f / .4" r while eibach US drops .86" f / .2" rear

RSXDC5 · 07-03-2015, 12:22 AM

Spring Rate Increases

M3:
+45% F
+24% R

M4:
+51% F
+26% R

Jaymax85 · 07-04-2015, 04:23 PM

updates!

pikkagtr · 07-04-2015, 05:46 PM

when are these available to purchase?

06-30-2015, 01:19 PM	#1
IND-Distribution BimmerPost Supporting Vendor 9602 Rep 10,891 Posts Drives: G82 M4 / G87 M2 Join Date: Oct 2006 Location: Chicago iTrader: (3)	Official spring data from Swift is here! After a considerable wait, we have confirmed the official data on Swift's M3/M4 lowering springs for the F8x cars. Swift Japan has been a leader in spring technology since the company's inception in 1997. Swift has engineering backing from one of the largest spring manufacturers in Japan, their parent company Tokyo Hatsujo corporation. Swift's spring technology allows for an excellent control of spring rate, spring travel, and response, while maintaining the lowest possible spring weight. This reduction of spring weight translates directly into lower overall unsprung weight and better vehicle handling and ride quality. Swift's proprietary HS5.TW alloy is specifically designed to balance these characteristics. Swift's M4 springs come in a 279 lbs/inch front rate, and a 726 lbs/inch rear rate, and will lower the car by 1.1 inch in front and .9 inches in the rear for an attractive but reasonable drop. The M3 springs are a bit more conservative, with a 268 lbs/inch front rate, a 715 lbs/inch rear rate, and a 1 inch drop in front and .4 inch drop in the rear. Spring data: M4 Rate Front 279 lbs/in 5.0 kg/mm Rear 726 lbs/in 13.0 kg/mm Drop Front -1.1 in -28mm Rear -0.9 -23mm M3 Rate Front 268 lbs/in 4.8 kg/mm Rear 715 lbs/in 12.8 kg/mm Drop Front -1.0 in -25mm Rear -0.4 -10mm __________________ IND DISTRIBUTION \| 866-963-4520 • INSTAGRAM • YOUTUBE • FACEBOOK • FLICKR Last edited by IND-Distribution; 06-30-2015 at 02:04 PM..
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06-30-2015, 01:41 PM	#2
Never Convicted Lieutenant Colonel 1108 Rep 1,497 Posts Drives: M4 Join Date: Dec 2012 Location: Charlotte NC iTrader: (0)	Any idea when you'll have them, Ilia?
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06-30-2015, 01:55 PM	#3
JTO24 never could compete with Lloyd Braun 5276 Rep 5,384 Posts Drives: 2022 G80 M3 6MT Join Date: Feb 2011 Location: South Jersey iTrader: (7)	This is only for the M4, correct? I thought the M3's drop spring rates were to be slightly less aggressive. __________________ 2022 G80 M3 6MT \| Skyscraper Gray \| Kyalami Orange 2018 F87 M2 6MT \| Alpine White (sold) 2016 981 Cayman 6MT \| Jet Black (sold) 2015 F80 M3 DCT \| Tanzanite Blue \| Gold Brown (sold) 2013 E92 M3 6MT \| Mineral White \| Fox Red/Black (sold)
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06-30-2015, 02:34 PM	#5
dmk08 Gone Fishin’ 7318 Rep 12,125 Posts Drives: Walks Join Date: Jul 2012 Location: Atlanta iTrader: (19)	Crazy that the M3 has been out so much longer than the RCF but yet both springs are coming out at the same time. http://www.clublexus.com/forums/rc-f...-released.html
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06-30-2015, 04:05 PM	#7
x.shell ▆ ✚✚ ▆▆▆▆▆▆ 6586 Rep 5,305 Posts Drives: ▋ ▉▉ Join Date: Nov 2012 Location: ▆▆▆ ▆▆▆ ▆ iTrader: (3)	Awesome!!!! The rates and drop specs look perfect. Excited and giddy.
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06-30-2015, 04:08 PM	#8
pikkagtr Go Spurs Go 3922 Rep 2,878 Posts Drives: 2022 GR Zupra Join Date: Jan 2015 Location: Bay Area iTrader: (-1)	I'm assuming going with m4 springs on an m3 is OK if you wanted then more aggressive rates and drop?
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06-30-2015, 04:29 PM	#9
sA x sKy Sameet 740 Rep 2,541 Posts Drives: AY/B M4 '15 Join Date: Apr 2010 Location: Long Island, New York iTrader: (3) Garage List 2015 BMW M4 [0.00]	Sweet.. So we can expect orders within the next two weeks? So glad I waited now..
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06-30-2015, 04:31 PM	#10
supremepower Supreme Leader 2285 Rep 6,548 Posts Drives: G80, 996GT2, 996TT, 991RS 356b Join Date: Jun 2006 Location: Fullerton, CA So.Cal. iTrader: (15)	Nice About time Swift!! __________________ **SupremePOWER** 1562 Kimberly Ave Fullerton CA 92831 Contact: sales@supremepower.com :: Shop# (714)632-1951 Sales & service of BBS Street & Motorsport products. BBS Highest Volume Dealer 2015 thru 2022 All the top brands at the prices and service you can count on. Professional installation.
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07-01-2015, 09:42 AM	#11
RocketBoots Colonel 1860 Rep 2,104 Posts Drives: Horse Drawn Carriage Join Date: Jan 2014 Location: Bay Area iTrader: (3)	Do you have the OEM spring rates? Would be nice to see a side/side comparo.
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07-01-2015, 11:40 AM	#13
dog_dealer New Member 16 Rep 22 Posts Drives: 2015 M4 Join Date: Dec 2012 Location: socal iTrader: (0)	finally!!! __________________ M4 \| Black Sapphire Metallic \| SO Extended Leather \| 6MT \| Executive Package \| Lighting Package \| Adaptive M Suspension \| Harman Kardon
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07-01-2015, 04:08 PM	#17
Jaymax85 Addicted to Speed. 714 Rep 2,375 Posts Drives: m3 zcp, macan GTS, f15 x5 Join Date: Aug 2011 Location: 'Murica iTrader: (5)	sign me UPPPPP the drop sounds PERFECT! __________________ 2017 991.2s 2015 F15 35i 2017 Macan gts
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07-03-2015, 12:22 AM	#20
RSXDC5 Captain 707 Rep 886 Posts Drives: M3 Join Date: Sep 2012 Location: Scottsdale, AZ iTrader: (0)	Spring Rate Increases M3: +45% F +24% R M4: +51% F +26% R __________________ 2015 M3 - AW 6Spd w/ CCB MCS 2WR Dampers, Spec Twin Disk Clutch, MaxPSI CH, F80Paul Ethanol Tune, 3.5in DPs
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07-04-2015, 04:23 PM	#21
Jaymax85 Addicted to Speed. 714 Rep 2,375 Posts Drives: m3 zcp, macan GTS, f15 x5 Join Date: Aug 2011 Location: 'Murica iTrader: (5)	updates! __________________ 2017 991.2s 2015 F15 35i 2017 Macan gts
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07-04-2015, 05:46 PM	#22
pikkagtr Go Spurs Go 3922 Rep 2,878 Posts Drives: 2022 GR Zupra Join Date: Jan 2015 Location: Bay Area iTrader: (-1)	when are these available to purchase?
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