Eibach or Progress?
Eibach or Progress?
Does anyone have any experience with Progress springs? I've always gone with Eibach but the Progress is quite a bit cheaper.
I also see that Progress is .2 inches lower in the front and .2 inches higher in the rear. Any ideas to why they would choose to do this?
I also see that Progress is .2 inches lower in the front and .2 inches higher in the rear. Any ideas to why they would choose to do this?
I'm somewhat familiar with their product line. If they're staggering the drop like you listed, it's probably to keep the gap between the tires & fenders the same front & rear.
Conversely, the 1.0/1.0 Eibach as listed almost has a little tuck to the rear and a little gap up front.
Conversely, the 1.0/1.0 Eibach as listed almost has a little tuck to the rear and a little gap up front.
That's what I was going to say.
Eibachs keep the entire car relatively horizontal. But since the fender designs aren't identical front and rear, the gaps are different. Sounds like Progress was trying to keep that gap the same, even if that means the nose of the car being angled downward more.
Eibachs keep the entire car relatively horizontal. But since the fender designs aren't identical front and rear, the gaps are different. Sounds like Progress was trying to keep that gap the same, even if that means the nose of the car being angled downward more.
Heeltoe has em for 195. The eibach springs do look pretty low in the rear and high in the front. Cutting the drop 0.2 inches might also help a little (20% ?) with camber issues. Anyone have progress springs on? or have any additional thoughts? Reputation of Progress?
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While we are on the topic, what brand of spring should I go with if I want a slight drop in heigt (say an inch) and as good and smooth a ride as stock ?!
I don't want anything to perform or go on weekend track days, only for the looks and still be confortable.
What would you recommend ?
I don't want anything to perform or go on weekend track days, only for the looks and still be confortable.
What would you recommend ?
While we are on the topic, what brand of spring should I go with if I want a slight drop in heigt (say an inch) and as good and smooth a ride as stock ?!
I don't want anything to perform or go on weekend track days, only for the looks and still be confortable.
What would you recommend ?
I don't want anything to perform or go on weekend track days, only for the looks and still be confortable.
What would you recommend ?
I don't know for sure, but usually a less expensive spring means that it's a specific rate rather than a progressive rate. (Harsh ride)
If it *is* progressive, then it's likely the materials used are of a lesser quality.
Kinda like the guys/gals that bought Neuspeed springs years ago. They were cheap and dropped the advertised amount....BUT then they kept dropping and dropping over time because the spring steel used was poor quality. When it does that, the alignment settings change too, meaning you're probably prematurely wearing out your tires.
Meh, I've run Eibach Pro-Kits for like...over 20 years and I've never had anything but a good firm ride & no surprises.
If it *is* progressive, then it's likely the materials used are of a lesser quality.
Kinda like the guys/gals that bought Neuspeed springs years ago. They were cheap and dropped the advertised amount....BUT then they kept dropping and dropping over time because the spring steel used was poor quality. When it does that, the alignment settings change too, meaning you're probably prematurely wearing out your tires.
Meh, I've run Eibach Pro-Kits for like...over 20 years and I've never had anything but a good firm ride & no surprises.
From their site:
"The progressively wound springs will lower the car approximately 1.20" in the front and .80" in the rear. This will give the car an aggressive stance and improve the handling by lowering the center of gravity and increasing the spring rates."
"The progressively wound springs will lower the car approximately 1.20" in the front and .80" in the rear. This will give the car an aggressive stance and improve the handling by lowering the center of gravity and increasing the spring rates."
PSH you should be different rather than going with the norm!
As for the cheaper price because of the cheaper materials isn't always true. Eibach has a good reputation - so they can charge a premium for their brand name because they know people will pay it.
As for the cheaper price because of the cheaper materials isn't always true. Eibach has a good reputation - so they can charge a premium for their brand name because they know people will pay it.
I'm not one to tell people that they shouldn't play if they don't go big, you know? It's just IMHO, it's not that much difference between known really good stuff and the less expensive stuff. And...I know I won't have to do it twice.
Our cars already have a stance like a cat in heat. Design wise and stock suspension the a$$ end looks higher than the front anyway. Exacerbate that and I would be scraping the nose on every swinging driveway.
I've always used Eibach in the past but I think in this case I would rather have the front and back look uniform. I'm not big on the tucked in look anyway ecpecially if the front has a gap and the rear does not. With spring sag, correct me if I'm wrong, it looks like progress may end up being a 1.5" front and 1" rear. So at the end of the day I will probably go with progress as well.
The mods list to my car will be finished in no time. All I have left is springs, sway bar, and intake. That's all I ever do to my cars anyhow. The cost to gain ratio for doing anything else is not worth it IMO. Unless of course you go NO2.
The mods list to my car will be finished in no time. All I have left is springs, sway bar, and intake. That's all I ever do to my cars anyhow. The cost to gain ratio for doing anything else is not worth it IMO. Unless of course you go NO2.
It's going to look off in one way or another...
Eibach: Car remains level. Rear fender gap less than front fender gap.
Progress: F/R fender gap closer to being the same, car not level.
I think it looks worse when looking from the side of the car it slopes down towards the front rather than perfectly level. I'd rather have a slightly different fender gap than an uneven car.
Look at the following picture with Eibachs installed. IMO the fender gap isn't THAT big a difference. However now look at how parallel the sideskirts are with the ground. Like HeavyDuty said, the car already has the appearance that the rear is higher than the front, esspecially when you look at the chrome window trim and see how much it slants forward. I personally wouldn't want to increase that slope any more than it already is.
Eibach: Car remains level. Rear fender gap less than front fender gap.
Progress: F/R fender gap closer to being the same, car not level.
I think it looks worse when looking from the side of the car it slopes down towards the front rather than perfectly level. I'd rather have a slightly different fender gap than an uneven car.
Look at the following picture with Eibachs installed. IMO the fender gap isn't THAT big a difference. However now look at how parallel the sideskirts are with the ground. Like HeavyDuty said, the car already has the appearance that the rear is higher than the front, esspecially when you look at the chrome window trim and see how much it slants forward. I personally wouldn't want to increase that slope any more than it already is.
It's going to look off in one way or another...
Eibach: Car remains level. Rear fender gap less than front fender gap.
Progress: F/R fender gap closer to being the same, car not level.
I think it looks worse when looking from the side of the car it slopes down towards the front rather than perfectly level. I'd rather have a slightly different fender gap than an uneven car.
Look at the following picture with Eibachs installed. IMO the fender gap isn't THAT big a difference. However now look at how parallel the sideskirts are with the ground. Like HeavyDuty said, the car already has the appearance that the rear is higher than the front, esspecially when you look at the chrome window trim and see how much it slants forward. I personally wouldn't want to increase that slope any more than it already is.

Eibach: Car remains level. Rear fender gap less than front fender gap.
Progress: F/R fender gap closer to being the same, car not level.
I think it looks worse when looking from the side of the car it slopes down towards the front rather than perfectly level. I'd rather have a slightly different fender gap than an uneven car.
Look at the following picture with Eibachs installed. IMO the fender gap isn't THAT big a difference. However now look at how parallel the sideskirts are with the ground. Like HeavyDuty said, the car already has the appearance that the rear is higher than the front, esspecially when you look at the chrome window trim and see how much it slants forward. I personally wouldn't want to increase that slope any more than it already is.

I agree, but when you sit in the car, or when the car is driving, the rear tends to drop more than the front. So I believe having the rear a little higher will counter any other situations where the car is moving or loaded.
Only under acceleration. Otherwise the weight of the driver will lower the front (minimal, unless your a major tubby) at a standstill.
Progressive is the plan for my street car. =)
They do have a good reputation, and I think it's for good reason. Their materials are top notch and the product is for real street cars.
I'm not one to tell people that they shouldn't play if they don't go big, you know? It's just IMHO, it's not that much difference between known really good stuff and the less expensive stuff. And...I know I won't have to do it twice.
Our cars already have a stance like a cat in heat. Design wise and stock suspension the a$$ end looks higher than the front anyway. Exacerbate that and I would be scraping the nose on every swinging driveway.
They do have a good reputation, and I think it's for good reason. Their materials are top notch and the product is for real street cars.
I'm not one to tell people that they shouldn't play if they don't go big, you know? It's just IMHO, it's not that much difference between known really good stuff and the less expensive stuff. And...I know I won't have to do it twice.
Our cars already have a stance like a cat in heat. Design wise and stock suspension the a$$ end looks higher than the front anyway. Exacerbate that and I would be scraping the nose on every swinging driveway.

It's going to look off in one way or another...
Eibach: Car remains level. Rear fender gap less than front fender gap.
Progress: F/R fender gap closer to being the same, car not level.
I think it looks worse when looking from the side of the car it slopes down towards the front rather than perfectly level. I'd rather have a slightly different fender gap than an uneven car.
Look at the following picture with Eibachs installed. IMO the fender gap isn't THAT big a difference. However now look at how parallel the sideskirts are with the ground. Like HeavyDuty said, the car already has the appearance that the rear is higher than the front, esspecially when you look at the chrome window trim and see how much it slants forward. I personally wouldn't want to increase that slope any more than it already is.

Eibach: Car remains level. Rear fender gap less than front fender gap.
Progress: F/R fender gap closer to being the same, car not level.
I think it looks worse when looking from the side of the car it slopes down towards the front rather than perfectly level. I'd rather have a slightly different fender gap than an uneven car.
Look at the following picture with Eibachs installed. IMO the fender gap isn't THAT big a difference. However now look at how parallel the sideskirts are with the ground. Like HeavyDuty said, the car already has the appearance that the rear is higher than the front, esspecially when you look at the chrome window trim and see how much it slants forward. I personally wouldn't want to increase that slope any more than it already is.

I think this is probably the best statement in this thread
Also disagree with this. The front springs are stiffer than the rear, and surprisingly the car will most likely drop evenly, or slightly more in the rear. Like I said, watching my own lowered car. This occurs both with acceleration, and under normal sitting in the car. And I'm a lightweight.
(Edit: I was typing when Viper had posted.)
Hey! I resemble that remark!
J/K
Rondog does have a point in that...measure from the center of the wheel to the top of the fenderwell when you have an empty fuel tank, then again after you fill up. The rear will dip & the front will look higher but should measure the same.
It doesn't matter what car we're talking about, the fender is cut higher in the front because those are (predominantly) the steering wheels. There is a greater differential between the F&R on this car, but like mentioned, the design when level is grossly raked to begin with. I'd still rather have an appropriate amount of travel for roads, not a track. Behind visual preference is the fact that a spring that lowers more will be of a higher rate which at best will be uncomfortable, and at worst, override the stuts ability to dampen the oscillations, prematurely wearing the strut.
Get some Koni Yellows (when they're offered) and crank up the rebound rate & they will live, but it'll ride like crap.
Very cool when I was 21, not fun at all with my flabby white a$$ @ 41.
J/KRondog does have a point in that...measure from the center of the wheel to the top of the fenderwell when you have an empty fuel tank, then again after you fill up. The rear will dip & the front will look higher but should measure the same.
It doesn't matter what car we're talking about, the fender is cut higher in the front because those are (predominantly) the steering wheels. There is a greater differential between the F&R on this car, but like mentioned, the design when level is grossly raked to begin with. I'd still rather have an appropriate amount of travel for roads, not a track. Behind visual preference is the fact that a spring that lowers more will be of a higher rate which at best will be uncomfortable, and at worst, override the stuts ability to dampen the oscillations, prematurely wearing the strut.
Get some Koni Yellows (when they're offered) and crank up the rebound rate & they will live, but it'll ride like crap.
Very cool when I was 21, not fun at all with my flabby white a$$ @ 41.
It's all good, take what one will, leave the rest. It's a personal decision & as long as your expectations are managed properly, everybody's happy.
Last edited by HeavyDuty; Apr 10, 2009 at 05:45 PM.
i'll wait til I see pics of one with the Progress springs. But as it stands, as far as looks go, I am perfectly happy with the way mine looks with the Eibachs. I had a set of Progress coilovers on my previous car and they were very well made.. but as someone said already, you really can't go wrong with either.
I was going to keep this a secret and surprise everyone, but fellow tsxer's could benefit from this info so I guess ill share. I ordered the progress springs but they wont be here for a few weeks cause they are not yet in stock. Anyone else contemplating between the two, you can wait for my pictures if you'd like....
I was going to keep this a secret and surprise everyone, but fellow tsxer's could benefit from this info so I guess ill share. I ordered the progress springs but they wont be here for a few weeks cause they are not yet in stock. Anyone else contemplating between the two, you can wait for my pictures if you'd like....
I was going to keep this a secret and surprise everyone, but fellow tsxer's could benefit from this info so I guess ill share. I ordered the progress springs but they wont be here for a few weeks cause they are not yet in stock. Anyone else contemplating between the two, you can wait for my pictures if you'd like....
defconskylude: I have absolutely NO idea if these rims are going to fit or not, but they are 19x8 +38
I am a little bit worried because I am for some reason very prone to scratching underneath my front lip (already got 2 huge ones). This is also the first time i've ever put springs on my car so I really need to learn how to drive a lowered car...friends say its just all about the angles. haha
I am a little bit worried because I am for some reason very prone to scratching underneath my front lip (already got 2 huge ones). This is also the first time i've ever put springs on my car so I really need to learn how to drive a lowered car...friends say its just all about the angles. haha
Last edited by ttk5; Apr 15, 2009 at 12:13 AM.
Don't even get me started on the Skyline. For some reason I can remember to put the TSX in neutral when I park, but every time I'm in the white car I have to make it a point to remember it because my left hand just doesn't want to cooperate. Sometimes I end up only 1/2 way in the parking spot to avoid the damn concrete stop.
I've yet to scrape my front end on anything but I'm pretty agressive with my approach angle. The best way to deal with steep driveways is to 'cross' them and then straighten out. As far as speed bumps go, unless you car is really low there shouldn't be any problems.
Heavy Duty your Skyline is an exception I'm sure. It looks pretty low.
Heavy Duty your Skyline is an exception I'm sure. It looks pretty low.
When you measure ride height, you're supposed to measure the height at the side jack points... So some of you guys with the Eibach springs should measure there and let us know what it comes out too.
ttk5: it would be awesome if you could do the same with the progress springs when you get them installed.
The suspension geometry is optimized for the body to be flat horizontally when measured at the jack points, that should be the frame of reference, not how the side skirts look.
Yes looks matter and scraping matters, but also from an objective standpoint, its good to know which set of springs provides optimal suspension geometry.
ttk5: it would be awesome if you could do the same with the progress springs when you get them installed.
The suspension geometry is optimized for the body to be flat horizontally when measured at the jack points, that should be the frame of reference, not how the side skirts look.

Yes looks matter and scraping matters, but also from an objective standpoint, its good to know which set of springs provides optimal suspension geometry.



