aharres Posted September 29, 2015 Report Share Posted September 29, 2015 Ok. I know this topic has been discussed at length already. I have read every spring related thread I can find on google, but as far as I know, my question hasn't been answered. I recently installed a used set of eibach springs (ew8417001va is the part number for the front) and they definitely improved the handling, but, I feel like they're still very soft. Especially when compared to the ipd track spec sway bars. I've been looking at the ipd and h&r springs and can't decide between the two. I don't care about the lowz. I would like to know which spring would provide the best performance, reduce understeer, and improve turn-in. I'm also interested in which spring has the higher spring rate in the rear. Link to comment Share on other sites More sharing options...
Commander Riker Posted September 29, 2015 Report Share Posted September 29, 2015 A great deal of this has to do with the damper chosen as well.Personally, I rode in a friend's S70 that Koni Yellows and H&R springs... with the IPD sways, it was a brilliant setup. Link to comment Share on other sites More sharing options...
gmsgltr Posted September 29, 2015 Report Share Posted September 29, 2015 I have the following: one wagon with H&R springs and Monroe shocks/struts and one wagon with IPD springs and Koni yellow shocks/struts. The ipd/koni yellow is more pleasing to me whether I want comfort or performance. If I could do it all over again though I would save my money and get KW V2 coilovers. Link to comment Share on other sites More sharing options...
aharres Posted September 29, 2015 Author Report Share Posted September 29, 2015 A great deal of this has to do with the damper chosen as well.Personally, I rode in a friend's S70 that Koni Yellows and H&R springs... with the IPD sways, it was a brilliant setup.On the front I have the koni oranges (STRT) and in the rear I have bilstein hd's. Link to comment Share on other sites More sharing options...
Commander Riker Posted September 29, 2015 Report Share Posted September 29, 2015 I don't think all of handling or ride goes into just spring quality. Link to comment Share on other sites More sharing options...
Tommy. Posted September 29, 2015 Report Share Posted September 29, 2015 If you're going to track it just get quail-hoovers Link to comment Share on other sites More sharing options...
adamdrives Posted September 30, 2015 Report Share Posted September 30, 2015 Your question is which spring provides the best performance? The reason you can't find an answer is because each situation is different. With a limitless budget I imagine you could build a superior adjustable set up but in the real world what you can achieve is relative to your budget, preferences etc. You don't want a track set up on a daily driver and vice versa. Getting the best performance, reduction in understeer and improvement in turn in is not just a matter of changing springs. It sounds like you are trying to build a race car, I would start with a solid stage zero in your suspension. Link to comment Share on other sites More sharing options...
aharres Posted September 30, 2015 Author Report Share Posted September 30, 2015 Your question is which spring provides the best performance? The reason you can't find an answer is because each situation is different. With a limitless budget I imagine you could build a superior adjustable set up but in the real world what you can achieve is relative to your budget, preferences etc. You don't want a track set up on a daily driver and vice versa. Getting the best performance, reduction in understeer and improvement in turn in is not just a matter of changing springs. It sounds like you are trying to build a race car, I would start with a solid stage zero in your suspension. Sorry, I should have specified. I have ipd 25mm sway bars, ipd hd endlinks, koni oranges up front, bilstein hd's in the rear, eibach springs, strut tower brace, new oem strut bearings, hd spring seats, powerflex control arm bushings, new 4 bushings in the rear suspension, and delrin subframe bushings. I have front and rear toe set to 0 and the car handles excellently as it is, but I feel like a lot of improvement could be had by installing stiffer springs. I know lucky stated the ipd springs are 10% stiffer than the h&r's, which makes me lean towards the ipd's, but I would like to know how the rear spring rates compare. Link to comment Share on other sites More sharing options...
adamdrives Posted September 30, 2015 Report Share Posted September 30, 2015 It's a valid question, the guys at ipd are helpful and i'm sure could answer some of your questions about spring rates. Link to comment Share on other sites More sharing options...
aharres Posted October 1, 2015 Author Report Share Posted October 1, 2015 I bought the ipd springs. I'll update on how I feel about them compared to the eibachs. It will probably be a month or so before I do it though. Link to comment Share on other sites More sharing options...
adamdrives Posted October 1, 2015 Report Share Posted October 1, 2015 Good choice Link to comment Share on other sites More sharing options...
caanglin Posted October 1, 2015 Report Share Posted October 1, 2015 Haven driven cars with pretty much every combo I always go back to ipds with Billy HDs. Everything else just has to much squat and dive. If you have the money get KW's. Link to comment Share on other sites More sharing options...
D s50r Posted October 2, 2015 Report Share Posted October 2, 2015 i had the ipd blues and bilstines hd's on my 98 s70 and it was a stiff hard ride, def rode on rails with that now I have d2 coils Link to comment Share on other sites More sharing options...
Burn-E Posted October 2, 2015 Report Share Posted October 2, 2015 Have the ipd blues and Bilstein HD as well on 18x8 wheels and the ride is STIFF. Fine for smooth roads but rough when the road is uneven. Link to comment Share on other sites More sharing options...
Kit Vexed Posted October 4, 2015 Report Share Posted October 4, 2015 i've had every combo between 3 different cars and no matter what spring you use, Billy steins are choppy as hell..i found the best combo to be iPd springs with Koni yellows.. reason being is those springs give you that rigidity for better handling, but you can always adjust the dampening with the yellows!eibachs were soft and my least favorite spring.. H&R were stiffer, but didn't really give me much stance/drop. iPd were stiffest and gave the best drop.im on kW v3's now and never looked back though =) also, remember that tire side-wall profile has a lot to do with ride quality and handling too.. but that's another story. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.