even though I won't be driving it for a while. It's in hibernation so I've started ripping her apart and modding [emoji106]
Thanks for the explanation fellas; It makes sense now.
Nice! How is the stance?Just installed mine last week
Progressive
I have had both, and my car is currently on Sportlines. I prefer the drop of the Sportlines to the Ultralite linears. The drop on the Steeda front springs isn't enough, IMO, and the front still looks like it has more wheel gap than in the rear. The drop-front and rear-on the Sportlines is perfect, IMO. The Ultralites also fit awkwardly, and the upper strut mount sits crooked even when installed properly. No issues whatsoever with the installation of the Sportlines. As for the ride with the Ultralite linear springs, I would say that it's probably a little stiffer than the Sportlines at low speeds (less than 30), but after that, the Sportlines firm up and the handling is fantastic.
I am running H&R springs on my 2016 they are progressive need to update list. :thumbs: Lethal Performance sells these.Hi there
I thought it might be a good idea to compile all the spring rates of the springs of the market all in one place, I shall keep this original post updated so people don't need to read all the replies.
So far I have compiled these from reading many threads on this great forum.
Front/Rear
GT: 160 / 668
GT PP: 165/728
BMR Performance: 170/740 (1.2" F / 0.5" R)
BMR Handling: 300/980 (1.2" F / 0.50" R)
BMR Drag: 150/800 (1.2" F / 0.5" R)
Steeda Sport Linear: 198/874 (1" F / 0.95" R)
Steeda Ultralite Linear: 198/874 (1.20" F / 1.05" R)
CJPP: 182-217 / 799 (1.5" F / 1" R)
Eibach Pro Kit: 200-314 / 800-914 (1.1" F / 1.0" R)
Eibach Sportline Kit: 217-331 / 879-994 (1.50" / 1.3" R)
Swift Springs Progressive: 270 / 782 (1.1" F / 1" R)
Linear VS Progressive
For those who don't understand the difference, Linear has a set constant spring rate and progressive is as the name suggest, progressive so as you drive the car harder causing more body roll the springs become firmer to try and control body movement more. Linear are the choice for those who want best handling characteristics with great predictability and less noise, plus linear springs work in harmony more so with the dampers. In short a linear spring will typical be a better handling car. The plus of progressive is when your driving on better roads they maintain better levels of comfort and only firm up on poor road surfaces which can actually mean worse ride quality or when you push the car harder, the downside is your dampers are linear and have a set rate so sometimes dampers can struggle with progressive springs and this is why coilover kits have progressive springs. Another downside of progressive springs is they can be noisy due to coils being much closer together causing squeaks. I enjoy corner carving and a predictable car with as little noise/NVH as possible, so I will always go linear springs.
Anyone knows the rates and drops for other springs or if I made a mistake please post and I shall add them to the OP. Be nice to have them all in one place, maybe an admin/moderator could sticky this?
Despite popular opinion on here, no. Everyone has different opinions. Some of the praise on linear springs on here comes from a vendor that doesn't sell progressive springs. Maybe they think that progressive springs suck, and that's okay, but let's also understand that they also have an interest in selling linear springs. I'm not trying to knock them, either--I have several of their products on my car and I love them. The Ford Racing handling pack comes with progressive springs. I have had both Steeda Ultralite linear and Eibach Sportlines (a progressive spring) on my car, both with the stock PP dampers (my car now has the FRPP dampers). In my OPINION, for a daily driver, the ride on the Sportlines is better than the ride on the Ultralites. Why? Because at low speeds (less than 30 or so) the Sportlines soak up the bumps better, but at speeds above 30 (where you'll be doing the vast majority of your aggressive driving), the Sportlines firm up and feel fantastic. I was wary of progressive springs at first, but I'm 100% sold on the Sportlines. Plus, I think they have the best drop of any spring currently on the market. Also, I never had any noises from either spring set.
