Lower + Ride Quality?

[Rv-Junke]

What do you see as the permanent fix?

3 Options:

1. Wait till Ford acknowledges this issue and has a fix
2. Progressive Springs to take up the little bumps
3. Ford Racing Handling Package full suspension upgrade

I am leaning towards 3....

Based on all that I have read and the dead body test in the trunk it is an absolute design issue!

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[jbailer]

Steeda Upgrade

After hearing Todd15Fastback's experience, I talked to David@Steeda who helped me put together a list of parts that I think will address my specific driving needs. Just ordered the parts this evening. After hearing what you said Todd and what David and TJ have said, I'm eager to get the parts installed. It may take a bit as I'll be doing most of the work myself (that is half the fun). I'll reply back once I get them installed with my impression.

Steeda S550 Billet Front and Rear Sway Bar Mount Kit (2015 All)
Part Number: 555-8149

Steeda S550 Mustang Adjustable Differential Bushing Insert System - Urethane (2015 All)
Part Number: 555-4439

Steeda S550 Mustang Billet Aluminum Vertical Links (2015 All)
Part Number: 555-4121

Steeda S550 Mustang Extreme G-Trac K-Member Brace (2015)
Part Number: 555-5532

Steeda S550 Mustang IRS Subframe Alignment Kit (2015 All)
Part Number: 555-4438

Steeda S550 Mustang IRS Subframe Bushing Support System (2015 All)
Part Number: 555-4437

Steeda Stage 1 Handling Package - Sport Progressive (2015 EcoBoost)
Part Number: 555-2127-P

Thanks,
Joe

 

[jbailer]

Those wheels look great!

Your experience with the Eibach Sport lines are part of the problem I've had. The problem is it's all subjective. What is ok to one person is completely unacceptable to another. I'm not saying it is apples for apples but I had the Eibach Pro springs on my 06 GT after hearing many people say the ride was great. I thought the ride was terrible. I couldn't even hold a conversation when the road was bumpy. I've installed other solutions on that car, still not completely happy with the ride although the handling is great. This EBM is my daily driver. Although I want it to handle like a road track car, it will never see the track. I need to be able to talk on the phone and probably more importantly not hear my wife complain every time she gets in my car that I ruined it. Plus I have an hour commute each way for work.

I just lowered my mustang on BC Coil-overs and the ride quality is great. I would say better than stock because you do not have so much body roll. I've been working with BC and we just finished dialing everything in this week. I am very happy with the results. With the BC coil overs you can adjust the Damp, so you can make it stiffer or softer. Adjust it to your liking. Before the Coils I had Eibach Sport lines and no complains here, the ride quality was good as well. Here are a few pictures of the car lowered on BC coil-overs.

 

[jbailer]

Oh, I thought you had something you were getting ready to do to eliminate the problem. Very sorry to hear that. Of course you do know that Ford will never say the ride quality is a problem. Whichever way you go, I wish you the best of luck. I'll let you know what the progressive springs do for me although mine is an Ecoboost. If the problem is in the back, I'd think it would be the same for all models though. Plus it sounds like the progressive springs solved the problem for Todd.

3 Options:

1. Wait till Ford acknowledges this issue and has a fix
2. Progressive Springs to take up the little bumps
3. Ford Racing Handling Package full suspension upgrade

I am leaning towards 3....

Based on all that I have read and the dead body test in the trunk it is an absolute design issue!

 

[908ssp]

For a car that will see track time a couple times a year and you still want great ride quality but the handling needs when you want to push it, yes.

Here is a reply from David@Steeda on their progressive springs.

http://www.mustang6g.com/forums/showpost.php?p=573898&postcount=149

Happy to provide additional background info.

Steeda’s progressive lowering springs for the S550 use a dual-rate spring with two linear rates connected by a rate transition range. What does this mean to our customers? In short, it means the springs are more predictable and easier to tune.

Our progressive springs were designed and tuned for a setup consisting of one to two people at 200 lbs each with a full tank of gas in the car. From our experience, a linear spring doesn’t provide as much roll control as a progressive spring. Think of our progressives as a high-tech dual-rate spring.

Spring rates - our progressive springs are 10% stiffer than the PP springs at curb and provide a 40% increase in roll stiffness over the PP springs when you lean into it and the spring compresses.

What that means is your shocks might handle one of the spring rates but not the other. Progressive springs don't deliver what they promise.

 

[Grim_Reaper]

I've got around a 1500 miles on my eibach sportlines and have zero complaints about them. I am still able to clear speed tables/bumps, driveways (even in cali when pulling into gas stations), and they perform well both around town and on long road trips. Took a nice canyon/cliff drive in the mountains and along the PCH, what a blast!

 

[BMR Tech]

What that means is your shocks might handle one of the spring rates but not the other. Progressive springs don't deliver what they promise.

I gotta tell ya, we have been testing various spring designs since we have acquired our cars, and one thing I can tell you is that I don't like a Progressive coil spring on these cars, especially with the IRS.

What I found is that this car was much less predictable with progressive coils, compared to Linear. I even tried out a split set-up, with Progressive on the Front, and Linear out back - and the other way around. The car was much better with a Linear Rear, Progressive Front....than the other way around, and even better with the Linear Rear, Progressive Front compared to Progressive on both F/R.

Needless to say, we will be staying away from Progressive rates on this platform.

Give me a call sometime, I'd like to chat about this topic. :cheers:

 

[Scott@Velgen]

Is it really possible to lower the car AND retain good ride quality? I've lowered my last 3 cars and regretted every one of them. The first time, I just didn't know. The next time I heard everyone say, "get the Eibach springs and they will be fine with the factory shocks". That certainly wasn't the case. Then I was told get the Tokico D-Spec adjustable shocks, that will take care of it. While it was better, it was still very rough. The last attempt on my 2010 was Koni shocks and Ford Racing Springs. That was probably the best of any combo I tried but still difficult to talk going over a bumpy road.

I've heard coilovers. Any experience with them, recommendations? I know they cost quite a bit more. I don't want to get them just to pay that much more and find out they still are very bumpy. I'd rather not do airbags because I don't want to have that system to fool with.

I have the 2015 EB Premium with PP. I noticed a little difference test driving the PP and non but that was definitely not an issue. Just the car is still sitting too high.

If it isn't possible, I'll just give up but my car is saying, "PLEEEEEASE!"

Thanks,
Joe

Joe , i started with the Eibach Sportlines and love the drop and loved the way the car handled.I have had the car lowered on the stock shocks for about 4 months and no issues. I have attached some images below.

I have decided now to go a different route " BC Coilovers " I just had them installed and " WOW " what a difference in handling, much better than the springs. The good thing about coils is its all adjustable from ride height / stiffness to softness. Once you fine tune the coils i think you will be pretty happy. I have NO bounce by the way. Here's a few pictures of the car now with the coilovers.

 

[BMR Tech]

^Nice!

Gotta tell ya, those wheels make HUGE difference in the way the car looks. That stance on the Sportlines looks great on that car with those wheels.. We tested some Sportlines out on one of our PP cars, and on the stock PP Wheel/Tire combo it looked bad, IMO.

 

[Todd15Fastback]

What that means is your shocks might handle one of the spring rates but not the other. Progressive springs don't deliver what they promise.

They are delivering for my needs. I have been very happy with ride quality and handling capabilities. Not to mention all the other Steeda parts that have been installed. Everything works perfectly together.

 

[Scott@Velgen]

Here's some pictures on the Stock 19's with the sportlines.

 

[BmacIL]

Looking good . Not too low.

 

[oilfieldtrash]

I'm keeping my stock 18s and stock non pp suspension on mine. It rides like a dream.

 

[Velgen]

Those wheels look great!

Your experience with the Eibach Sport lines are part of the problem I've had. The problem is it's all subjective. What is ok to one person is completely unacceptable to another. I'm not saying it is apples for apples but I had the Eibach Pro springs on my 06 GT after hearing many people say the ride was great. I thought the ride was terrible. I couldn't even hold a conversation when the road was bumpy. I've installed other solutions on that car, still not completely happy with the ride although the handling is great. This EBM is my daily driver. Although I want it to handle like a road track car, it will never see the track. I need to be able to talk on the phone and probably more importantly not hear my wife complain every time she gets in my car that I ruined it. Plus I have an hour commute each way for work.

Thank you, I like the silver finish gives the car a clean look. I agree with you it is all consumer's preference. I don't know how the eibach springs were on the older models but I had no issues with noise or bumps. Also with the BC I felt it was a lot better since you have the luxury of adjusting the damp. So you can basically adjust it to the ride quality you prefer. You also have to consider the tire brand you go with and the size of the tire, that effects the ride quality as well. For the complaining I would recommend I nice loud exhaust :lol:

 

[Velgen]

^Nice!

Gotta tell ya, those wheels make HUGE difference in the way the car looks. That stance on the Sportlines looks great on that car with those wheels.. We tested some Sportlines out on one of our PP cars, and on the stock PP Wheel/Tire combo it looked bad, IMO.

Thank you! It was probably too far in the fender well, and not a fat enough tire.

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