Looking for advice a feedback on suspension

[BmacIL]

Add Swift Spec R springs. Not much lower but they pair great with the Steeda shocks. I've had the combo myself. Was an excellent all-rounder package and the drop, at least on my car, which likes to sit lower in the rear wheel gap-wise, was spot on. I was very happy with the combo, just the springs weren't stiff enough for my track activity/driving style so I went with Steeda Dual Rates, which are also great (but wouldn't be my first choice for a street car unless you're targeting ultimate handling and willing to suck up some hard-edge bumps with some more stiffness (so to speak) than your average street car would be set to. With the Dual Rates, shocks set to soft, it's very streetable, but only get those if you're going on a road course or are God's gift to mountain roads.

This is a good idea. I forget about the Swifts sometimes. Personally I'd still add a 1/8" spring spacer but that's personal preference.

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[GreenS550]

This is really good info. If I stick with Steeda, I can upgrade as needed. So, I am looking at these progressive rate springs which I am guessing are like the old "P" springs on my S197? I also could use spacers to slightly raise the car closer to stock height?
So, what about going this route?
https://www.steeda.com/Steeda-S550-Mustang-Front-Ride-Height-Spacer-Kit-2015-2019_p_12604.html
https://www.steeda.com/steeda-s550-mustang-billet-rear-spring-spacer-1-4-inch-555-8251.html
https://www.steeda.com/steeda-mustang-sport-springs-progressive-2015-gt-v6-coupe-555-8210.html

 

[GreenS550]

I finally decided on using the Steeda progressive rate springs with spacers on the front and rear springs. I will install when the weather permits. Thanks to everyone that gave input!

 

[GreenS550]

I installed the front Progressive rate Steedas and Brembo brakes yesterday. I was amazed at how softer the progressive rate springs were compressing them by hand than the stock GT springs. Hoping to get a better ride yet also flatter handling.

 

[GreenS550]

I finished the installation and took the car for a ride today. I truly cannot believe how good the ride is. It almost completely got rid of the bouncing up and down on every bump. Totally changed the car. I had stock springs with Steeda Pro-action shocks and struts. I truly thought the issue might have been with the pro-action parts. Wrong! The car rides really, really good.

Thanks for everyone's help on this. It wasn't the foundry rims, it was the stock springs.

 

[tj@steeda]

We appreciate the feedback & knowing it wasn't our shocks & struts

We'll chalk this one up as another winner, winner, chicken dinner!

TJ

 

[Bluemustang]

Glad to hear it's working out well now. Before you had too much damping, too little spring and sway bars that are really stiff and not matched to the setup. I'm not surprised you had issues.

Choose the springs first, then dampers, then sway bars very last. Just getting stiff as hell bars or better dampers isnt going to go together. I've actually gone to decreasing my bar stiffness because I found it to reduce wheel independence among other things. To be fair I am running a lot stiffer springs than you too though.

I am a believer now in having sway bars just stiff enough to keep it from rolling too much, and no more. Let the springs and dampers control most of the roll. In fact a little bit of roll at one end or the other (or in my case a little less anti-roll from the bar) has helped my setup. But that's what is working for me - it is largely a subjective topic. Folks usually go softer spring, stiffer bars or stiffer springs and softer bars. Depends on who you ask. And obviously the dampers help to control the body as well.

Now your springs and dampers are better matched together. I'll be interested to see if the track bars still work for you with the new springs after some time. My guess is it might be okay because the spring rate is still on the softer side. But if you find the car breaking away too easily on one end or the other or wheel independence is hampered too much, then softer bars might be a good idea.

 

[GreenS550]

I sold the track bars a while ago. The weather here is still wintry so I haven't really tried any curves. I did put Steedas spring spacers in at the same time so the rear end is only dropped 1/4" and the front a 1/2".

I could tell immediately that the progressive springs were going to help as I could compress them slightly vs the stock springs which wouldn't budge.

They remind me of the Ford Racing "p" springs on my 2011 and 2009 GTs .

If I change sway bars I will only go with Steeda. As you said, keep the parts working together. Here is the after photo. The car hardly looks lowered. Exactly what I wanted. I'm sure it will settle a bit, though.

 

[Bluemustang]

^Looks good man. Good choice on ditching the Track bars I think. Glad to hear its working out well! After awhile you'll be able to know if it needs a little fine tuning with the bars.

 

[BmacIL]

This is evidence of how much improvement is possible with these cars. It's actually shocking, pun intended lol. Glad your car is working how you want it to! Looks fantastic (best color too).

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