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Old 07-15-2009, 07:51 PM   #19
viper74656
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Member#: 84758
Join Date: Apr 2005
Chapter/Region: MAIC
Location: Dover DE
Vehicle:
'04 WRB WRX

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Quote:
Originally Posted by williaty View Post
Dude, snuck a ninja edit in there on me

Stiffer springs DO NOT equal more performance. Stiffer springs equal a higher resonant frequency. In general, softer tires require higher resonant frequencies. Put it this way: On RE92s, there's not going to be an actual performance (totally different than perceived performance) difference between the stock springs and the RCE Blacks. Why? Because the tires don't need or want the extra rate. In fact, they may suffer due to the increased rate. However, toss on a set of R-Comps, and suddenly you need the high spring rates of the Blacks (or maybe even higher) to take full advantage of the tire.

Now, that's a completely different issue than what the driver may find it easy to be fast on. If it happens to be easier for you to drive on a stiff setup, it's likely you'll be faster on a stiff setup. At that point, it has nothing to do with the car, though.
We are digressing a bit but its not just about R comps vs street tires. Maybe if you are running 500 or 600 lb springs but these are definitely street-style springs we are talking about here. I assure you that you put a driver around the autocross course in 2 identical cars, 1 on sti springs and one on rce blacks (given these struts and any decent performance tire) the blacks will be a hell of a lot faster. I don't car what your driving style is. Yes there is a point of diminishing returns when it comes to spring stiffness, but these aren't close to it.

Quote:
Originally Posted by williaty View Post
There is no "best" spring for the D-Spec. The range of damping available from the D-Specs is MASSIVE. The D-Specs can basically properly control every spring offered for the Impreza from the WRX stockers on up (RS stockers would be too soft). As far as fitment, well, any spring that has stock fitment will fit the D-Specs. So it's a bit of a mis-step to claim that any spring was designed "for" the D-Specs.
Thats true but in we are talking about optimal springs here, otherwise he may as well go with the Tokico springs which "work" but certainly are not optimal. Yes, there are a lot of choices, I just pointed out what most people (myself included) consider to be the most optimal springs (street/autocross performance wise) for the D-specs.

Its also worth noting that I dont think the D-Specs the OP linked to are the same ones we are talking about. Oops! OP, these are the ones we have been discussing: http://www.turninconcepts.com/produc...roducts_id=544
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Last edited by viper74656; 07-15-2009 at 07:58 PM.
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