ok my trd stuff is sold and i cant stand the stock suspension so im looking to order some new stuff asap


im collecting spring rates becosue im looking for the best setup i can get with stock struts and ride quality is not an issue so here is what i have found so far


Tanabe DF210 Springs

Spring Rates (F/R): 3.4 / 4.3
Lowering Rates (F/R): 1.7 / 2.2



Tanabe NF210 Springs

Spring Rates (F/R): 3.0 / 4.1
Lowering Rates (F/R): 1.1 / 1.7


Tein S-Tech

Spring Rates (F/R): 3.6/ 6
Lowering Rates (F/R): 2.4/2



Tein H-Tech

Spring Rates (F/R): 3.3/ 5.5
Lowering Rates (F/R): 1.9/1.5



Gold line

Spring Rates (F/R): n/a/ n/a
Lowering Rates (F/R): 2/2



Eibach SPORTLINE KIT

Spring Rates (F/R): n/a/ n/a
Lowering Rates (F/R): 2/2



Eibach PRO-KIT

Spring Rates (F/R): n/a/ n/a
Lowering Rates (F/R): 1.2/1.2



Hotchkis

Spring Rates (F/R): n/a/ n/a
Lowering Rates (F/R): 1.7/1.97



TRD

Spring Rates (F/R): n/a/ n/a
Lowering Rates (F/R): 1.25/1.25 (from trdsparks im not sure if this is correct)




H&R Sport Springs

Spring Rates (F/R): n/a/ n/a
Lowering Rates (F/R): 1.4/1.3







i know im missing some and i know im missing spring rates for alot of them witch is what i realy want to know i dont realy care about the drop so if any one has info PLEASE feel free to add

 

any one got more info for me?? if not i think im going with the s-techs due to there spring rates but i would love to know some of these other spring rates if any one has info on them or any other springs i didnt list

 

talk to break_away on here he some a local md spring companies spring on his car he likes them he might be able to get you the rates

 

1) Those numbers look like the distance lowered (in inches) of each spring set, not the spring rate (which is measured in force/distance).

2) There is a sticky at the top of this subforum with this information in it. You may want to review the list there and add anything not included.

https://www.scionlife.com/forums/viewtopic.php?t=89766

 

The spring rate for the stockers are 25.5 N/mm and the TRD's are 29.8 N/mm
(Taken from scoin service manual)

 

Awesome, terra, thanks!

According to Google, that works out to:
25.5 (newtons per millimeter) = 145.608752 pounds force per inches
29.8 (newtons per millimeter) = 170.162385 pounds force per inches

So the TRD's are about a 17% increase.

 

Front 1.7" (43mm) Drop 175 lbs/in (Stock 150 lbs/in)
Rear 1.97" (50mm) Drop 285 lb/in (245 lbs/in)
for hotchkis on their web site, I was wondering about that also, for what all the spring rates were, since there really hard to find. stiffer gives better performance right? I'm still learning all this, I want the hotchkis, but I'm just now noticing the spring rate. dose anyone have a good comparison on rate vs handling? Something generic that I and others can associate.

 

The Hotchkis springs look to be about the same rate as the TRDs, just lower. Yes, stiffer gives better performance (in that they resist body roll more), but the stiffer you get, the less comfortable the ride. To compare, the Tein Basic Coilover set has spring rates around 480-500 lbs/in. So figure a 300-350% increase in stuffness vs the 17% increase that the Hotchkis or TRD give over stock.