Help with spring decision

[Khyber]

i actually got a combo deal with FRPP sport exhaust and the eibach pro kit through Hypermotive. Out of all the pics I've seen the rear just looks lower with steeda than the front compared to eibach which offsets the front drop from the rear.

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[Todd15Fastback]

Out of every post on this thread, no one has actually said what is better about the Steeda springs other than their opinion. There hasn't been a single fact posted for either the Eibach or Steeda.

People are saying Steeda, 1 inch all the way around drop, well the Eibach pro kit does 1.1" Front and 1.0" Rear. The stock front actually sits higher than the rear...

http://eibach.com/america/en/eibach-news/ford-mustang-2015-plus-pro-kit

I like Steeda better and trust their springs are more inline with my driving habits and what I want out of my car. The feedback by a handful of people has been glowing. Along with their sway bar kit. Both in combination will provide what I am looking for my GT PP.

That is a fact.


What "facts" are you looking for? Springs are just like a color of paint. Many choices and many differing opinions based on how much they drop the car. How firm the ride is. Is it bouncy. Does it have more or less body roll. All this info has been posted in other Steeda discussions on this very forum.

 

[Todd15Fastback]

can anyone confirm or deny that the rear on the steeda's is indeed lower or not? It just looks like it in a lot of pictures.

Any confirmation on this?

 

[S550_Magnetic]

I like Steeda better and trust their springs are more inline with my driving habits and what I want out of my car. The feedback by a handful of people has been glowing. Along with their sway bar kit. Both in combination will provide what I am looking for my GT PP.

That is a fact.


What "facts" are you looking for? Springs are just like a color of paint. Many choices and many differing opinions based on how much they drop the car. How firm the ride is. Is it bouncy. Does it have more or less body roll. All this info has been posted in other Steeda discussions on this very forum.

Wasn't the OP asking for a reason to justify the extra cost of Steeda over Eibach? If I was asking that same question, I would want facts more than opinions. What makes the Steeda $50+ more than the Eibachs? Every single person on this forum that has installed the Eibachs, have had nothing but great things to say about them.

 

[S550_Magnetic]

Any confirmation on this?

If they are truly 1 inch all the way around, then the front would definitely be higher than the rear considering it is from the factory. That is why Eibach did a lower drop in the front than in the rear...

 

[Todd15Fastback]

If they are truly 1 inch all the way around, then the front would definitely be higher than the rear considering it is from the factory. That is why Eibach did a lower drop in the front than in the rear...

Negative. My car as it sits on my level concrete garage floor is .5" lower in the front. Car has 1560 miles on it and has been in my possession for 1 month. So the car has settled. I measured this last night as well.

 

[HalfMoon]

I have the Steeda springs and sway bars on my PP GT and recommend them. Other threads have addressed the question of lower in the rear stock and the consensus is that it is an illusion based on the cut of the wheel wells.

All I will say about Eibach is that I have had them in the past on my Camaros and they were fine. However, when I called them about my Mustang in early November the support tech I spoke with told me he installed 2 sets on test cars. When I asked him about spring rates vs. Performance Pack springs he had no idea what the Performance Pack was and said "yeah, the test cars were Premiums”. I tried to explain it to him and he was clueless.

That's all I needed. After talking to David @ Steeda it was clear that they knew MUCH more about the application and testing of the suspension. I trust them over a one stop spring and sway bar for every car shop at this point.

 

[Khyber]

Oh well. There can't be that much difference between the eibach and the steedas. Steeda's is getting beat on price at the moment anyways by $60+. If steedas were still the Black Friday $200 price it might be a different story. But for me with the combo deal I basically paid for the exhaust and got the springs for free or discount on both. Whichever way someone wants to look at it.

 

[S550_Magnetic]

Negative. My car as it sits on my level concrete garage floor is .5" lower in the front. Car has 1560 miles on it and has been in my possession for 1 month. So the car has settled. I measured this last night as well.

Mine has 1700 miles on it and the wheel gap in the front is larger than in the rear.

 

[2wheels4me]

i actually got a combo deal with FRPP sport exhaust and the eibach pro kit through Hypermotive. Out of all the pics I've seen the rear just looks lower with steeda than the front compared to eibach which offsets the front drop from the rear.

Keep in mind that the front tires have smaller sidewall; 40% of 255 mm (~4.02 inches) vs 40% of 275 mm (~4.33 inches) in the back, so the sidewall of the front tire is about 0.3 inches less, so the total diameter of the front tire is about 0.6 inches less. If you look at height of the side skirt in the pic below, it is pretty even or even going slightly downhill to the front. If it's an issue at all, which it isn't to me, it's a TIRE size issue, not a spring issue. This difference in total wheel diameter was pointed out to me by member Mellow Yellow when we got together for Supercar Sunday, and he is correct.

My car's stance with the Steedas, which looks great to me:

 

[Agarc]

i have eibachs and h&R in the warehouse but i feel like maybe they didnt account for the different spring rate on the PP and just did well this spring fits all and thats ,that

 

[David@Steeda]

Wasn't the OP asking for a reason to justify the extra cost of Steeda over Eibach? If I was asking that same question, I would want facts more than opinions. What makes the Steeda $50+ more than the Eibachs? Every single person on this forum that has installed the Eibachs, have had nothing but great things to say about them.

Hey happy to provide a bit more info, and for the record we have only good things to say about Eibach.

- Our springs lower the car 1" on all four corners.
- Our Sport Springs work great in conjunction with the OE shocks/struts. If you're lowering the car more than 1", we would recommend the use of aftermarket shocks/struts. As an FYI, we are working on a set for the S550.
- The Steeda springs are 25% stiffer than the Performance Pack springs, with little to no sacrifice in ride quality based on the feedback we have received thus far and from our own testing. As you lean into the corners, the rates will exceed the 25% increase in spring rate to merit even less body roll and better handling.
- The end coil rate is also the same as production unlike some other brands.
- We have springs for the GT, V6 and the EcoBoost.
- We have yet to experience/hear of anyone experiencing rubbing issues with our springs even when used with an aggressive wheel/tire setup. If you're going to road race the car with a beefy rear tire setup, we would recommend slightly trimming the bump stops to avoid any potential rubbing as the springs will compress under load.
- After about 5 - 7 days, the springs will settle.

We are here to help with any other questions!

Thanks,
David

 

[Khyber]

i have eibachs and h&R in the warehouse but i feel like maybe they didnt account for the different spring rate on the PP and just did well this spring fits all and thats ,that

what's the stock pp spring rate? Looking for this. can't find it

eibach spring rate

Front: 200-314 lb/in.
Rear: 800-914 lb/in.

what's the actual steeda rate? I can't find the actual rate other than the "25% stiffer over stock"

 

[HalfMoon]

Wasn't the OP asking for a reason to justify the extra cost of Steeda over Eibach? If I was asking that same question, I would want facts more than opinions. What makes the Steeda $50+ more than the Eibachs? Every single person on this forum that has installed the Eibachs, have had nothing but great things to say about them.

For one thing, to me a $50 difference isn't really that much and with the Steeda team on this forum answering in-thread and via PM all the time, I think it's a no brainer.

what's the stock pp spring rate? Looking for this. can't find it

eibach spring rate

Front: 200-314 lb/in.
Rear: 800-914 lb/in.

what's the actual steeda rate? I can't find the actual rate other than the "25% stiffer over stock"

Here's what I posted in early November from talking to Eibach:

http://www.mustang6g.com/forums/showpost.php?p=338875&postcount=8

As I mentioned here and in that post, at that time the guy at Eibach had no idea about PP springs being different and/or if they even tested a PP car.

 

[BMR Tech]

We tested the PP Springs at 165lb/in Front and 749lb/in Rear.

Typically, springs have a "range" that is considered tolerable...so, we could test a PP spring at 165, and someone else could possibly test it at say, 161~

By seeing the Eibach tested rear springs, I will assume those were base. No way we could get 749, and someone else only get 699.

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