Eibach Pro-Kit and Sportline Impressions?
 

Hello everyone. So I've been debating and looking around on lowering springs and have come across a few selected springs out on the market. I've been highly interested in the Eibach ProKit and Sportlines for a while only because I've heard only good words about them, especially the prokits.

Comparing these two together its of course the spring rate and height. I've read probably most of the reviews of both of these springs from Darren and other reviews on the forums. The sportlines gets rib of probably the most wheel gap out there for springs from what I know of but some people are saying that lowering the car too much can affect the handling or geometry of the car. What I hear about the prokit is that it's a very practical height and not too low. Some people have also suggested that the sportlines need LCA to fix the camber.

What I'm trying to figure out is if running stock wheels/tires on sportlines vs prokit make a huge difference in handling of the car? The stiffness problem I'm okay with but the sportlines are the only ones out there that are a cheaper option for a nice lowered car vs. coilovers. Even though I like the height of the sportlines vs the prokit I just don't want the geometry of the car to be compromised. I don't track my car and probably won't until I have whole new wheel/tire setup. I only take my car on spirited drives every now and then.

Would appreciate as much feedback on these two springs. Thanks!

I went with Pro Kit bc I live in the northeast and DD my car year round. I didn't want to be a snow plow when there's snow on the ground. I also run on stock shocks so Sportlines would be pushing it. I also like not having to worry (as much) about driving over speed bumps and beating up the front bumper every day. I like the car at a height where it looks like it should have came out of the factory.

Here's mine with Pro Kit springs on 18" wheels tires 225/40/18

I ride on sportlines, I don't drive in the snow (even though I'm in the NE), running fine on stock dampers, no problems with beating up the front bumper unless you have some really low aftermarket front lip, speed bumps not a big deal as long as you slow down. There's not a huge difference actually between pro-kit and sportlines, maybe .3"+/-. They are a little bit stiffer, but IMHO it's a sports car. With my aftermarket rims, tires, springs, and good alignment, the car handles *way* better than stock - unless you are a track junkie, go with what looks best to you. Daily driving you won't see a performance difference between the two, alignment is more important. Also the car looks great, and it doesn't look slammed at all.

Yea reading about both of your guys response it seems that the difference between the two is really just the height. Can anyone else chime in on there experience or knowledge on these two springs in terms of performance?

While the pro-kit are one of better bunch of springs available to our platform (swifts and RCE are also great alternatives), it's only a marginal increase in performance over stock. Sport-lines lower the car a bit more, but compromise on stroke travel with soft rates -- not a good combo if you plan to upgrade to sticker tires.

Suspension tuning is all about compromise, we just can't have it all unfortunately.

I wouldn't go with Sportlines. I had Sportlines for 5 months or so and the ride quality really sucks...plus the rear looked saggy compared to the front.
I'd go with Pro-Kit all the way. The drop looks much nicer IMO.
Ride quality may not seem high on your priority list when you want to just get rid of your wheel gap, but trust me...after a few weeks of bouncing around in your car it's just more annoying than fun.

I went with the sportlines and I'm not sure I would do it again. It has the look that I wanted, but coupled with the stock struts the handling takes a noticible hit. The ride height and daily driving qualities are easily doable for me, but the overall cornerning performance and grip both suffered.

Also, if you install sportlines, I would highly recommend camber correction in both the front and the back as you will have almost 0 camber in the front and -2+ in the rear and that makes it look/handle even worse.

So if you want the dropped/sporty LOOK, go for the sportlines. If you want the sporty FEEL, go with the pro kit. My .02

My car has been on Sportlines for about 18 months. Been tracked at Sebring and Homestead about 10 times. DD I run 18" staggered setup, but track with stock wheels and Kumho XS tires. It got complements from track-day instructors on the handling. On the street it doesn't handle sharp impacts well, but that's not as much of a problem in Florida as it might be elsewhere. The shocks are obviously compromised by the short travel, but it doesn't seem to upset the car any on the track or in most daily driving. All that said, the car is not what I'd consider a plush ride even in stock form.

own both springs on the car, pro-kit is better imo

I have a prokit and I like it. My 3 inch exhaust kits everything though.