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Old 02-13-2010, 12:28 PM   #1
Pete Holt
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Impreza WRX STi 09 STI- RCE springs vs. Eibach or wait for coilovers and slicks?

Recently picked up an 09 STI to replace the bugeye track rat. Torn between RCE regular guy springs vs. Eibach for street/relatively light track use. Eibachs cost 1/2 as much and have a million mile warranty. However, w/ 1" drop they may look a little odd w/ stock width tires. Have seen a lot of people selling the RCE springs used, but not too many reviews on either spring set. Anyone track w/ either spring?

My other option would be to get 9.5" wide rims w/ 275/35/18 Star Specs or something similar w/ either spring set. (Also replacing all bushings and motor/tranny mounts on the car.) If I track it w/ 275/35/18 star specs and springs, will I just end up wanting slicks and coilovers for faster lap times?
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Last edited by Pete Holt; 02-16-2010 at 12:27 PM.
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Old 02-16-2010, 12:31 PM   #2
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If I did go w/ coilovers it would probably be something like the AST or KW set ups so they ride decent on the street, unlike the Tein Flex I had on the bugeye. (I am guessing that 275/35/18 BFG R1 slicks would probably be too much for just springs, sways, mounts and bushings.)
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Old 02-16-2010, 12:56 PM   #3
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if you really want to track your car.. i say go ahead and just make the jump to coilovers.. I dont know what spring rates the RCE or Eibachs have.. but with 275 star specs you'll benefit the most from a coilover.. not saying you cant be fast on springs.. but it might save you money down the road if you just go to a setup you think you might switch to in the future.
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Old 02-16-2010, 01:12 PM   #4
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plenty of reviews on iwsti on the RCEs.

What are the spring rates of the Eibachs?
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Old 02-16-2010, 01:42 PM   #5
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I have the Eibach pro street I believe on my car and I like it a lot gave the car a much more mean stance, and a much stiffer ride.
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Old 02-16-2010, 04:07 PM   #6
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I tracked mine on RCE regular guy springs for quite a while and loved it. Plus it drove better around town than with the stock springs.

How much track time do you actually put on the car in a year?

Tony
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Old 02-16-2010, 05:12 PM   #7
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I bet I will only track this car 5-7 times/yr. for HPDE's. I am trying hard to convince myself to just get springs and keep it on the street, but I am afraid that I will get the itch to track it once spring comes around.

Tony- what car and tires were you tracking with?
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Old 02-16-2010, 05:42 PM   #8
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If you really want to fun on the track, buy good coilover. Don’t buy one from the internet shop. Ask some shop who has track experience. They will give you some good coilover setup. Those coilover are expensive around $2k -$3k. But you can get two things “fun” and “Fast”. Cheap coilover may just give you “scare” and “Slow”.

And, Dunlop Z1 star spec is really good tire. That is cheap, but very competitive tire.

Isamu
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Old 02-16-2010, 10:11 PM   #9
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I used Star specs on my bugeye a few times (after I corded a set of slicks) and they did well for street tires, but still quite a noticible difference going back to BFG R1's. I was hoping this time they would handle better w/ the extra width (275/35/18). I liked the track performance of the Tein Flex I had on the bugeye, but they rode awful on the street. They say they ride smoother now w/ the new design, but I bet they are still pretty harsh on the street. I guess I am like everyone else looking for maximum performance on the track, but still a decent ride on the street.
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Old 02-16-2010, 11:12 PM   #10
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I've had the RCE yellows with ohlins struts for quite a while and love the setup with the whiteline race swaybars. I usually run street tires for both autox and track use though. I'm sure I could get more out of coilovers but the car handles well enough that I know that I need to learn more first.
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Old 02-17-2010, 12:41 AM   #11
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I'm kind of the mindset that you might want to be a little stiffer if you're tracking the car, especially if you are actually intending to run on slicks.

The RCE springs were made by guys who race their cars. It's an option if you want something different from stock. You're still limited by the stock dampers though as well as available travel.

If you do want to step to something serious, you will step to coilovers.
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Old 02-17-2010, 12:49 AM   #12
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Are rce linear or progressive? I'm guessing progressive?
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Old 02-17-2010, 12:31 PM   #13
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RCE RG springs: 320 front, 320 rear ~5mm drop / Myles describes them as "Slight progression, nothing crazy."



stock: 217 front, 185 rear

The RGs have slightly more rear bump travel than stock thanks to the use of shorter bumpstops and the minimal drop.

TIC's new coilovers should have even more travel.

For the money, it's hard to beat the Regular Guys, though.. hell, Tony is suggesting them.. when they've got new coilovers they could be trying to push on you.
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Old 02-17-2010, 02:26 PM   #14
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RCE springs and TIC coilovers both add more travel and are supposed to ride decent on the street. I know RCE's KW coilovers are supposed to be decent on the street as well, but not sure about adding travel. So you guys think going to one of these coilovers is going to be night/day difference compared to RCE springs? Will they ride that much worse on the street?

I am really torn between trying to make RCE or Eibach springs work w/ 275 star specs for a few track days a year or if I should just wait to get coilovers and slicks because that will be a night/day difference in terms of performance, but hopefully, not ride quality.
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Old 02-17-2010, 04:20 PM   #15
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My understanding of the Eibach springs are that they are pretty soft and low, and more intended for looks than performance. I know Myles has at least driven on them for the 08+ car.

Get the springs for now, sell them later if/when you get coilovers. The springs do make a BIG improvement by themselves.

Last edited by AndyRoo; 02-17-2010 at 04:41 PM.
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Old 02-17-2010, 08:29 PM   #16
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Quote:
Originally Posted by Pete Holt View Post
I bet I will only track this car 5-7 times/yr. for HPDE's. I am trying hard to convince myself to just get springs and keep it on the street, but I am afraid that I will get the itch to track it once spring comes around.

Tony- what car and tires were you tracking with?
Car is my 08 STI. It has been tracked on 265 35 18 Re01R's and 275 35 18 Dunlop Z1 SS.

5-7 days is about the point at which I start to talk to people about getting coilovers. That tells me they are serious enough about what they are doing to potentially value the investment. That does not mean that it is right for everyone.

If you have say 3000 to spend total on your suspension for your intended purposes, coilovers would not be on the list...period. I would recommend the following:

-22mm front and rear sways
-RCE springs
-gtworx camber plates
-camber bolts
-ALK
-front control arm bushings
-steering rack bushings
-Roll center adjusters
-engine and trans mounts
-shifter bushings
-trans xmember bushings
-rear subframe bushings
-rear camber bushings
-rear diff bushings
-rear trailing arm bushings
-rear endlinks

That would leave you money left over for tires and alignment and maybe even some fuel.

The performance of the car at that point would be night and day better than stock and be incredibly competent on track and comfortable on street. It will also be a very forgiving setup as you learn the car.

Tony

Last edited by Turn in Concepts; 02-22-2010 at 12:26 PM.
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Old 02-17-2010, 10:02 PM   #17
Pete Holt
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Tony-good info. Most of those parts are on my list. I tracked my bugeye for about 6yrs. and the parts just gradually added up to the point where I had it set up just the way I wanted for track days on slicks. However, it was not very streetable.

I think with the STI I am trying to be logical (for once) and trying to justify the extra cost in the future of another set of wheels w/ slicks and coilovers like I had on my last car.

Say for example I am comparing 275/35/18 star specs w/ RCE springs and all the previously mentioned bushings with 275/35/18 BFG R1 slicks and your coilover set up. Obvioulsy there is a huge cost difference, but is the performance gap really all that large? Lap times over 4 miles might be 3-4 seconds quicker or am I way off?
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Old 02-17-2010, 10:10 PM   #18
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if your comparing slicks to street tires that alone is good enough for 2 seconds or more.
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Old 02-17-2010, 10:55 PM   #19
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Quote:
Originally Posted by Pete Holt View Post
Tony-good info. Most of those parts are on my list. I tracked my bugeye for about 6yrs. and the parts just gradually added up to the point where I had it set up just the way I wanted for track days on slicks. However, it was not very streetable.

I think with the STI I am trying to be logical (for once) and trying to justify the extra cost in the future of another set of wheels w/ slicks and coilovers like I had on my last car.

Say for example I am comparing 275/35/18 star specs w/ RCE springs and all the previously mentioned bushings with 275/35/18 BFG R1 slicks and your coilover set up. Obvioulsy there is a huge cost difference, but is the performance gap really all that large? Lap times over 4 miles might be 3-4 seconds quicker or am I way off?
I haven't been too impressed with the R1's. Don't really seem to offer much more outright grip than the star specs and break away without warning. They are much more consistent though as they heat up.

Tony
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Old 02-18-2010, 08:30 PM   #20
Pete Holt
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Interesting... I ran 245/40/17 R1's and Star specs on my bugeye on the same day on a very tight & technical 1 mile track last season. Lap times were consistently only 1 sec. faster with the R1's so not an enormous difference.

It sounds like slicks will be too much for the springs and I have ruled out the Eibach springs. Since lap times seem pretty close with star specs and R1's I think I will stick with star specs (or a similar street tire if anyone has other suggestions).

I have only done track days with various coilovers, so I am not sure about just doing springs. With star specs or similar street tires in 275/35/18 will I notice a huge difference going to AST or KW coilovers compared to RCE springs?
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Old 02-18-2010, 08:45 PM   #21
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YOu might be better off with stiffer sways and go with springs and maybe koni inserts. You will get teh best of both comfort on the street and a good track set up.

I run 27mm front and 22mm rear. with 255 NT-01's and gf210 springs. I am going through the same debate as you are, but am leaning towards inserts and more bushings everywhere.
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Old 02-18-2010, 09:15 PM   #22
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Quote:
Originally Posted by medamullet View Post
YOu might be better off with stiffer sways and go with springs and maybe koni inserts. You will get teh best of both comfort on the street and a good track set up.

I run 27mm front and 22mm rear. with 255 NT-01's and gf210 springs. I am going through the same debate as you are, but am leaning towards inserts and more bushings everywhere.
Koni's doesn't have inserts for a 2008+ STi. I ran Koni inserts on my WRX with STi pink springs on the track with a RSB and RE01R's. It was quick, consistent, predictable. The only four things I would've done past that is camber plates, an ALK, RCE yellows and bushings.
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Old 02-18-2010, 10:01 PM   #23
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I am planning on getting stiffer sways and pretty much every bushing, motor, and tranny mount that STI and Whiteline make as well as Kartboy endlinks and shifter bushings.
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Old 02-19-2010, 01:44 PM   #24
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Quote:
Originally Posted by Turn in Concepts View Post

I would recommend the following:

-22mm front and rear sways
-CE springs
-gtworx camber plates
-camber bolts
-ALK
-front control arm bushings
-steering rack bushings
-Roll center adjusters
-engine and trans mounts
-shifter bushings
-trans xmember bushings
-rear subframe bushings
-rear camber bushings
-rear diff bushings
-rear trailing arm bushings
-rear endlinks

Tony
I actually have everything in red on the car and the car handles like a dream. I actually have(or on order) everything on that list, just can't put the parts in yet =/. RCE Springs are definitely worth getting and if you need reviews go to iwsti GR suspension forum and you'll find ALOT. If you don't mind stock ride height the black springs can be had for cheap cause people are selling them to get yellows which are slightly lower(12mm). If you want a lower ride height then blacks talk to myles NOW to get on the yellow spring pre-order and save some money. And if you plan to get swaybars talk to Myles for RCE swaybars that are about to be out soon too.

If you still feel iffy, ask to go on a ride in someones car with the springs. You'll be amazed in the difference. It not only handles far better- it's 10x more comfy. The one and ONLY con with these springs are they didn't come on the car from the factory, like they should have come.
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Old 02-20-2010, 11:37 AM   #25
Pete Holt
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I did not know RCE had yellow springs for the 09 STI yet, they are not listed on the site. Is this something they are developing? Sounds like a good fit for me since I am between springs and coilovers for track days.
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