Fiesta ST Lowering Springs and spring rate Thread

[danbfree]

Simple answer, yes and yes!
I now have 38500km on my car (24000 miles) and the ride is vastly improved, but bad roads are still not great in the car.
Mountune or Eibach are pretty much the same, but I went Mountune and am a very happy customer.

Thanks for the input! I read up a bit and it's still up in the air if the claimed drop heights are accurate and the Mountune and Eibach Pro are actually the same? I'd just go Eibach for the $35 less and the claimed only 0.6" additional drop, that would be a combined 1.2" total over a non-ST Fiesta, sounds perfect.. and if you say ride is vastly improved, ANY improvement in the bounciness even over decent roads would make this car more comfortable to live with.

 

[Agostini]

I think that eibach goes down a bit more than mountune in the front of the car


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[danbfree]

I think that eibach goes down a bit more than mountune in the front of the car

Weird, they claim the opposite, ~15mm drop front for Eibach, ~25mm Mountune....

 

[Agostini]

Weird, they claim the opposite, ~15mm drop front for Eibach, ~25mm Mountune....

I'm not sure about that, I've only seen photos of both and eibach seems lower than mountune in front (I have eibach and I have not installed them because of that, I like how the mountune looks)


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[danbfree]

I'm not sure about that, I've only seen photos of both and eibach seems lower than mountune in front (I have eibach and I have not installed them because of that, I like how the mountune looks)

Yo se, gracias por tu informacion... If you are saying this and I believe others have too, I'll go the Mountune route.. Can you give me feedback on the ride? Is there less harsh bounce on small bumps but still handle really good?

 

[LILIKE16ST]

Eibach claims slightly less drop than mountune but to me they appear pretty close to the same I don't understand why people are saying eibach looks lower? The same I can see but lower? Not so sure about that. Any of those progressive rate springs should help ride a little at the cost of some crispness so to speak on turn in. I went with swift spec r which has a similar drop and appears very level all sround and is also stiffer at around 25% stiffer vs 5% for mountune and they're linear rate which would help the sharpness and predictability of the handling and help this car improve what it does best and do well on tight roads.

*edit*
Now that's not to say the progressive rate springs won't improve handling they most certainly will as well as ride quality I just prefer to crispness and sharpness of the linear rate swifts.

 

[danbfree]

Eibach claims slightly less drop than mountune but to me they appear pretty close to the same I don't understand why people are saying eibach looks lower? The same I can see but lower? Not so sure about that. Any of those progressive rate springs should help ride a little at the cost of some crispness so to speak on turn in. I went with swift spec r which has a similar drop and appears very level all sround and is also stiffer at around 25% stiffer vs 5% for mountune and they're linear rate which would help the sharpness and predictability of the handling and help this car improve what it does best and do well on tight roads.

*edit*
Now that's not to say the progressive rate springs won't improve handling they most certainly will as well as ride quality I just prefer to crispness and sharpness of the linear rate swifts.

Nice, that's what I figured... I'm not exactly an "old" man yet, but I am willing to trade off a touch of absolute razor sharpness for a slightly better ride, so I already know that I want progressive; I just am trying to decide between Eibach and Mountune... I know they are both made by Eibach but wondering what possible different specs Mountune theirs made at..

 

[LILIKE16ST]

Nice, that's what I figured... I'm not exactly an "old" man yet, but I am willing to trade off a touch of absolute razor sharpness for a slightly better ride, so I already know that I want progressive; I just am trying to decide between Eibach and Mountune... I know they are both made by Eibach but wondering what possible different specs Mountune theirs made at..

You will probably be fine with either spring eibach is a little cheaper so you may want to go that route. I honestly don't see either being that much different between one another. There may be slight differences but probably not anything you're ever going to notice much.

 

[danbfree]

You will probably be fine with either spring eibach is a little cheaper so you may want to go that route. I honestly don't see either being that much different between one another. There may be slight differences but probably not anything you're ever going to notice much.

Right on, ya, the Eibach are $35 cheaper but I'm prob gonna get the AP w/drop in and motor mount package from Mountune anyway, it might be easier to just order it all from them but I now have good food for thought, thanks!

 

[M-Sport fan]

I'm not exactly an "old" man yet

I AM an "old man", and I would gladly go with an even higher rate than the Swifts, despite that, IF they existed, and there were dampers out there which could 'handle' that crazy spring rate.

 

[danbfree]

I AM an "old man", and I would gladly go with an even higher rate than the Swifts, despite that, IF they existed, and there were dampers out there which could 'handle' that crazy spring rate.

LOL, nice! I was just watching a YouTube video with a 20 y.o. kid talking about how his Eibach's gave him a better ride than stock... I mean, if that first inch of travel was progressive I suppose I wouldn't mind an even higher rate spring, but for now I think the Eibach or Mountune will suit me just fine...

 

[Truth in Ruin]

I AM an "old man", and I would gladly go with an even higher rate than the Swifts, despite that, IF they existed, and there were dampers out there which could 'handle' that crazy spring rate.

There is a set that has a higher spring rate than the Swifts, they’re called ST springs. koozy has them. I tried looking them up, but couldn’t find them. I think they may cost a little more than the Swifts, but they definitely have my interest.

 

[koozy]

There is a set that has a higher spring rate than the Swifts, they’re called ST springs. koozy has them. I tried looking them up, but couldn’t find them. I think they may cost a little more than the Swifts, but they definitely have my interest.

http://www.fiestastforum.com/forum/...ring-rate-Thread?p=65564&viewfull=1#post65564

let's clear up some misinformation about some springs that has been circulating for too long, hopefully these photos are self evident.

Stock OE '14 Springs.

ST Springs

Swift Springs w/Bilstein B8's

 

[Truth in Ruin]

http://www.fiestastforum.com/forum/...ring-rate-Thread?p=65564&viewfull=1#post65564

let's clear up some misinformation about some springs that has been circulating for too long, hopefully these photos are self evident.

Stock OE '14 Springs.

ST Springs

Swift Springs w/Bilstein B8's

Thanks for this post koozy. 245lbs FRONT & 250lbs REAR make the Swifts sound like child’s play.
And from the pic they look like true linear springs.

I tried looking them up, but had no luck finding them. If I may, could you post a link?

Thanks koozy!

 

[koozy]

Thanks for this post koozy. 245lbs FRONT & 250lbs REAR make the Swifts sound like child’s play.
And from the pic they look like true linear springs.

I tried looking them up, but had no luck finding them. If I may, could you post a link?

Thanks koozy!

No link, I called ST and inquired with their tech/engineer.

 

[Truth in Ruin]

No link, I called ST and inquired with their tech/engineer.

Excellent. I’ll give them a ring.

 

[KKaWing]

Swifts are linear spring rate. If you want to get technical, they are dual rate. However, the lower rate is not in effect once the car is on the ground as they collapse fully. They are there to hold the spring in place at full extension. Here's spring rate testing of the various spring manufacturers by Red Shift.

Click here for link.

Just because a spring is wound in a liner fashion, they could still be "progressive" in spring rate. Example would be BC Racing's springs they use for their coilovers. Initial travel aside, their springs increase in rate when it is increasingly compressed. In comparison, Swift springs stay liner for the majority of the travel.

^^^

The Swifts are not progressive, they are a dual rate spring that is effectively linear as the tighter wound section collapse together once the car is on the ground.

 

[Dpro]

No link, I called ST and inquired with their tech/engineer.

So how do you like the ride and feel of the ST springs. One should also note that ST is owned by KW.

 

[koozy]

So how do you like the ride and feel of the ST springs. One should also note that ST is owned by KW.

The ride is at the limit I'd want to go for the street. It's stiff, but makes up for it in the tight twisty canyons and long sweepers in the open highway. The Bilstein B8 have significantly improved the ride comfort compared to when the ST Springs were paired with the OE shocks/struts. I haven't experienced other lowering springs out there for the FiST, so I can't compare. It may not be for many, but I have no complaints with my current ST Springs/Bilstein B8 for a daily driver set up being used on LA streets. I've hit pot holes hard enough at speed to actually move my rear view mirror out of position

 

[Dpro]

The ride is at the limit I'd want to go for the street. It's stiff, but makes up for it in the tight twisty canyons and long sweepers in the open highway. The Bilstein B8 have significantly improved the ride comfort compared to when the ST Springs were paired with the OE shocks/struts. I haven't experienced other lowering springs out there for the FiST, so I can't compare. It may not be for many, but I have no complaints with my current ST Springs/Bilstein B8 for a daily driver set up being used on LA streets. I've hit pot holes hard enough at speed to actually move my rear view mirror out of position

This is actually excellent info for me, being also a LA resident.

I was thinking of a Swift/Koni setup.

I have used Eibachs on other cars. My Ground Control coilovers on my M3 come with them and they do not ride bad. Except for the fact that Eibachs do tend to sag over time and you will find a height drop with them 6 months to a year after install.

That is the reason I am looking at other spring options.