How long do aftermarket springs last?

[bigbirneysg8]

I have a chance to buy a set of King Springs, 30mm drop for a great price. Was told they have 60-70k miles on them. Do they wear out over time? Im not that familiar with King, are they pretty firm? Either these of the Eibachs if not. Thanks

[Doug Hilliard]

I have a chance to buy a set of King Springs, 30mm drop for a great price. Was told they have 60-70k miles on them. Do they wear out over time? Im not that familiar with King, are they pretty firm? Either these of the Eibachs if not. Thanks
I'm not familiar with the brand but springs should never wear out if properly designed; hard to imagine reputable springs not being properly designed these days but that's my two cents worth!

[dandragonrage]

I am not qualified to give a physics lesson on this or anything, but when I had my previous car (4.5th-gen Camaro), and I was on LS1tech, there was a guy who sold suspension parts (including having his own brand) named Sam Strano that talked a bit about the quality of a spring and he convinced me that spring quality does matter. Lesser quality springs, from my understanding, are more likely to sag.. or break. I would never consider springs from most companies, and that even includes Eibach.

What do you want springs for, anyway? It's the shocks that control the ride for the most part. Spring swaps shouldn't be necessary for almost any of us.

[bigbirneysg8]

I am not qualified to give a physics lesson on this or anything, but when I had my previous car (4.5th-gen Camaro), and I was on LS1tech, there was a guy who sold suspension parts (including having his own brand) named Sam Strano that talked a bit about the quality of a spring and he convinced me that spring quality does matter. Lesser quality springs, from my understanding, are more likely to sag.. or break. I would never consider springs from most companies, and that even includes Eibach.

What do you want springs for, anyway? It's the shocks that control the ride for the most part. Spring swaps shouldn't be necessary for almost any of us.

I am doing whole suspension upgrade. My struts are shot at 55k, and I would like to have a little better handling, and a little lower stance.
King springs have been around a while. From AUS I believe. Many of the Holden and GTO guys have ran them for years. Some like better than Pedders. Was just looking to see if they degraded much with use. If I can get a used set for 150$, vs. more than $400, I would do that.

[Eidolon]

You're asking a hard question, how "firm" the springs are. That's so subjective that there's no good way to relate what we consider firm to what you consider firm. I run Eibachs, though, and I can tell you I'm fine with them. With the stock bushings, they'd be perfectly acceptable.

As far as reliability, yeah, I've heard of King. King and Tein seem to be more popular overseas. Unless the owner's been hard on them, they're likely still good.

Though, heck, I've put my Eibachs through two full track weekends and they're still kicking it. That's especially impressive for the front left spring, considering we always tackle VIR clockwise, so that front left gets a serious workout.

[bigbirneysg8]

Thanks Eidolon. Yeah the original post isnt clear. I was more trying to figure out if they maintained firmness over extended time. I know all springs vary, I just want better handling and lower stance without having my teeth rattled over every bump, thus the reason I am not buying coil overs. I know the ride will not be OEM and I am fine with that.