FMS lowering springs

skiwesser · 03-08-2002, 01:29 AM

Do any of you guys have the FMS "sport springs"?
Are they any good. For 135.00 bucks they seem like a
good deal & I think I could still get my D.R.'s on. I
belive the Eibachs would lower it too much to fit
the big tires?FMS only supposed to lower rear
1/2 in. But theres got to be somthing in that extra
100 bucks for the Eibachs cause i know you get
what you pay for!!

any input will help, thanks.

kystang86 · 03-08-2002, 01:59 PM

i have a set and i like them ,lower it just enough and still give it a nice firm ride.

DZEE'S LX · 03-08-2002, 02:37 PM

I wouldn't necessarily go with the "drop" that they list.
My C springs dropped the front as much as 1.5". The rear didn't hardly drop at all. Probably because the lighter rear weight of the LX compared to the GT that they were most likely designed for.
The instructions will tell you that after a couple hundred miles you can cut the coils to achieve desired height. I cut about 1.5 coils off the rear springs to get the back end down.

Ride is much stiffer than stock, made even harsher by the poly bushings, but she corners very flat. Ain't a soft ride no mo'!!

Dan

95mustanggt · 03-08-2002, 03:04 PM

I believe the difference in the FMS springs and the Eibach springs is that the Eibach springs are variable rate springs, while the FMS springs are fixed rate.

The variable rate springs are better and that's why you pay more for them. Although I've really heard anyone say bad things about there FMS springs.

skiwesser · 03-08-2002, 07:45 PM

Are the FMS springs very harsh? I've still
got stock '88 spring and my ride is very
harsh, I figure any spring,being new, would almost
improve it!! How much better ride do the progressive
springs give?

Thanks

95mustanggt · 03-11-2002, 11:23 AM

Progressive rate springs start off with a less stiff spring rate (better ride), but as you continue to compress the spring, the spring stiffness incressess (good handling). The fixed rate spring will only be able to do one thing, good ride or good handling.

The cars that I have been in with progressive rate springs had a really nice ride compared to the cars with FMS springs. The only problem with my experince is that all the cars that had FMS springs were Fox's and the progessive rate springs were SN95's. The 2 bodies handle differently that my experience is a little skewd.

Don't for get your shocks and struts either, they make a difference in ride quality too.

Hope that helps.

cad614 · 03-11-2002, 05:49 PM

I got the FMS "c" springs, and have almost regretted it ever since. Granted the car handles great, but it's a very rough ride on the street. I have never been in another lowered vehicle, so I have no basis to compare the two, but if I had the chance to do everything again I'd have went with Eibach.

03-08-2002, 01:29 AM	#1
skiwesser Registered Member Join Date: Sep 2000 Location: rock hill,S.C. 29730 Posts: 420	FMS lowering springs Do any of you guys have the FMS "sport springs"? Are they any good. For 135.00 bucks they seem like a good deal & I think I could still get my D.R.'s on. I belive the Eibachs would lower it too much to fit the big tires?FMS only supposed to lower rear 1/2 in. But theres got to be somthing in that extra 100 bucks for the Eibachs cause i know you get what you pay for!! any input will help, thanks. __________________ 88 GT: subs,pullies, 1 3/4 longtubes, flowmasters, AFR 165's,T,F #1 cam,Thyphoon intake, 24# inj., 73mm C&L,65mmT.B., 190LPH pump, Eagle sir rods, forged pistons in a newly rebuilt 306. DYNO TUNED TO 300.97 RWHP 337RWTQ

03-08-2002, 01:59 PM	#2
kystang86 Registered Member Join Date: Jul 2000 Location: frankfort,ky Posts: 54	i have a set and i like them ,lower it just enough and still give it a nice firm ride. __________________ 86 gt 3.73's,underdrives, welds, pro-5.0 shifted, chip,autometers,flowmasters, k&n,2.5" cowl hood, new motor in the works.. 00 250 powerstroke diesel

03-08-2002, 02:37 PM	#3
DZEE'S LX Registered Member Join Date: Jan 2001 Location: Salt Lake City Posts: 117	I wouldn't necessarily go with the "drop" that they list. My C springs dropped the front as much as 1.5". The rear didn't hardly drop at all. Probably because the lighter rear weight of the LX compared to the GT that they were most likely designed for. The instructions will tell you that after a couple hundred miles you can cut the coils to achieve desired height. I cut about 1.5 coils off the rear springs to get the back end down. Ride is much stiffer than stock, made even harsher by the poly bushings, but she corners very flat. Ain't a soft ride no mo'!! Dan __________________ Spec Service (UHP), BFG G-Force KDW's, Turbo Coupe 3.55 rear w/disks, 73mm calipers, Stg 1 Twisted Wedges, TFS Street Intake, 70mm TB, E cam, Crane 1.7's, Aeromotive FPR, BBK 1 5/8 shorties, elec fan, FMS Al Radiator, Moroso Wires, Kenne Bell Ramair, March pulleys, Race Magnums, 190 lph Walbro, FMS Al Dshaft, D/S loop, MM 4point rollbar, FMS C spngs, strut tower brace, Tokico Illuminas, Prothane bushings, MM Lwr Conrol Arms, KB welded subs, Cervini Mach 1 hood/valence/side skirts/wing/airdam.

03-08-2002, 03:04 PM	#4
95mustanggt Registered Member Join Date: May 2000 Location: Kamloops, BC Posts: 2,875	I believe the difference in the FMS springs and the Eibach springs is that the Eibach springs are variable rate springs, while the FMS springs are fixed rate. The variable rate springs are better and that's why you pay more for them. Although I've really heard anyone say bad things about there FMS springs. __________________ 1995 Mustang GT 20016 F150 Lariat Super Crew

03-08-2002, 07:45 PM	#5
skiwesser Registered Member Join Date: Sep 2000 Location: rock hill,S.C. 29730 Posts: 420	Are the FMS springs very harsh? I've still got stock '88 spring and my ride is very harsh, I figure any spring,being new, would almost improve it!! How much better ride do the progressive springs give? Thanks __________________ 88 GT: subs,pullies, 1 3/4 longtubes, flowmasters, AFR 165's,T,F #1 cam,Thyphoon intake, 24# inj., 73mm C&L,65mmT.B., 190LPH pump, Eagle sir rods, forged pistons in a newly rebuilt 306. DYNO TUNED TO 300.97 RWHP 337RWTQ

03-11-2002, 11:23 AM	#6
95mustanggt Registered Member Join Date: May 2000 Location: Kamloops, BC Posts: 2,875	Progressive rate springs start off with a less stiff spring rate (better ride), but as you continue to compress the spring, the spring stiffness incressess (good handling). The fixed rate spring will only be able to do one thing, good ride or good handling. The cars that I have been in with progressive rate springs had a really nice ride compared to the cars with FMS springs. The only problem with my experince is that all the cars that had FMS springs were Fox's and the progessive rate springs were SN95's. The 2 bodies handle differently that my experience is a little skewd. Don't for get your shocks and struts either, they make a difference in ride quality too. Hope that helps. __________________ 1995 Mustang GT 20016 F150 Lariat Super Crew

03-11-2002, 05:49 PM	#7
cad614 Senior Member Join Date: Apr 1999 Location: San Angelo, TX Posts: 377	I got the FMS "c" springs, and have almost regretted it ever since. Granted the car handles great, but it's a very rough ride on the street. I have never been in another lowered vehicle, so I have no basis to compare the two, but if I had the chance to do everything again I'd have went with Eibach. __________________ Mike '95 GT Convertible

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