個人積分：1012分
文章編號：86605845
It looks like OEM Sports suspension is about 15%(32% in spring rate) stiffer than OEM Base suspension and Ohlins suspension was another 45%(110% in spring rate) stiffer than OEM Sports suspension...
(I also found Ohlins M3 E92 is a little softer than Ohlins 335i E92 surprisingly!!!)
Stock 335i e92: 3593 lbs
Front 2.54K : 2.54 / (3593 * 52%) * 1000 = 1.360
Rear 8K : (8 / 2) / (3593 * 48%) * 1.16 * 1000 = 2.690
Ohlins 335i(E90) (Weight: 3593 lbs)
Front 7K : 7 / (3593 * 52%) * 1000 = 3.747
Rear 12K : (12 / 2) / (3593 * 48%) * 1.16 * 1000 = 4.036
---------------------
330i Sport (F30) (Weight: 3589 lbs)
Front 2.8K : 2.8 / (3589 * 52%) * 1000 = 1.500
Rear 8.5K : (8.5 / 2) / (3589 * 48%) * 1.16 * 1000 = 2.862
Ohlins 330i(F30) (Weight: 3589 lbs)
Front 8K : 8 / (3589 * 52%) * 1000 = 4.287
Rear 14K : (14 / 2) / (3589 * 48%) * 1.16 * 1000 = 4.673
----------------------
330i Non-Sport (G20) (Weight: 3536 lbs)
Front 2.1K : 2.1 / (3536 * 52%) * 1000 = 1.142
Rear 6.3K : (6.3 / 2) / (3536 * 48%) * 1.16 * 1000 = 2.153
Ohlins 330i(G20) (Weight: 3536 lbs)
Front 8K : 8 / (3536 * 52%) * 1000 = 4.351
Rear 14K : (14 / 2) / (3536 * 48%) * 1.16 * 1000 = 4.784
------------------------
Stock M3 E92: 3704 lbs
Front 2.8K : 2.8 / (3704 * 52%) * 1000 = 1.454
Rear 9.6K : (9.6 / 2) / (3704 * 48%) * 1.16 * 1000 = 3.132
Ohlins M3 E92: 3704 lbs
Front 6K : 6 / (3704 * 52%) * 1000 = 3.115
Rear 12K : (12 / 2) / (3704 * 48%) * 1.16 * 1000 = 3.915
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個人積分：1012分
文章編號：86606106
G37(V36) Sport (Weight: 3613 lbs)
Front 7.6K : (7.6 * 0.7) / (3613 * 53%) * 1000 = 2.778
Rear 7.2K : 7.2 / (3613 * 47%) * 0.586 * 1000 = 2.485
IS350(XE20) Base : 3527 lbs
Front 4.5K : (4.5 * 0.75) / (3527 * 53%) * 1000 = 1.805
Rear 5.1K : 5.1 / (3527 * 47%) * 0.5 * 1000 = 1.538
IS350(XE20) Sport : 3527 lbs
Front 5.4K : (5.4 * 0.75) / (3527 * 53%) * 1000 = 2.167
Rear 5.6K : 5.6 / (3527 * 47%) * 0.5 * 1000 = 1.689
-----------------------------------
But, in 2015 IS350 won the competition...
(I think the below IS350 and Q50 should be only base model because the below IS350(XE30) is only a little stiffer than IS350(XE20)... The Sport model should be another 10-15% stiffer...)
In my opinion, these Japanese luxury cars should be a little stiffer than BMWs no matter base or sport models... Of course, stiffer suspension doesn't always mean better handling!!!
(because you also have to consider dampers, sway bars, tires, wheelbase, etc)Q50 Base (Weight: 3730 lbs)
Front 6.2K : (6.2 * 0.7) / (3730 * 53%) * 1000 = 2.195
Rear 2.6K : 2.6 / (3730 * 47%) * 1000 = 1.483
IS350(XE30) : 3593 lbs
Front 4.1K : (4.1 * 0.75) / (3593 * 53%) * 1000 = 1.615
Rear 8.3K : 8.3 / (3593 * 47%) * 0.5 * 1000 = 2.457
Ohlins IS350(XE30) : 3593 lbs
Front 14K : (14 * 0.75) / (3593 * 53%) * 1000 = 5.514
Rear 11K : 11 / (3593 * 47%) * 0.5 * 1000 = 3.257
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個人積分：1012分
文章編號：86606408
Stiff on front provides quicker or more precise turn-in which is better on narrow public roads!!!
However, stiffer on rear provides easier turning and stiffer supports during high G which is better for wide open race tracks!!!
For "street" guys like me people prefer the first setup but for "tracks" guys people should prefer the second setup...
PS: My current GSF being very stiff on front are still very scary on narrow mountain roads if I really push it to the limits... Those cars being softer on front would be even more scary at that situation!!! (However, once you overcome the initial fear when entering a corner, and inside a corner... The situation would become better afterwards for the second setup)
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個人積分：1012分
文章編號：86606460
MY00-01 (Weight: 2809 lbs)
Front 3.8K : (3.8 * 0.7) / (2809 * 50%) * 1000 = 1.894
Rear 5.1K : 5.1 / (2809 * 50%) * 0.725 * 1000 = 2.633
MY02-03 (Weight: 2809 lbs)
Front 4.36K : (4.36 * 0.7) / (2809 * 50%) * 1000 = 2.173
Rear 5.36K : 5.36 / (2809 * 50%) * 0.725 * 1000 = 2.767
MY04-07 (Weight: 2835 lbs)
Front 4.48K : (4.48 * 0.7) / (2835 * 50%) * 1000 = 2.212
Rear 3.63K : 3.63 / (2835 * 50%) * 0.725 * 1000 = 1.857
MY08 CR (Weight: 2864 lbs)
Front 6.57K : (6.57 * 0.7) / (2864 * 50%) * 1000 = 3.212
Rear 4.62K : 4.62 / (2864 * 50%) * 0.725 * 1000 = 2.340
Ohlins R&T (Weight: 2835 lbs)
Front 11K : (11 * 0.7) / (2835 * 50%) * 1000 = 5.432
Rear 7K : 7 / (2835 * 50%) * 0.725 * 1000 = 3.580
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個人積分：1012分
文章編號：86606571
個人積分：1012分
文章編號：86606660
The below is OEM spring rates... I have to say Nissans are usually quite stiff!!!
(Just like GT-R!!!)370Z
Stock (Weight: 3362 lbs)
Front 7.5K : (7.5 * 0.7) / (3362 * 53%) * 1000 = 2.946
Rear 8.1K : 8.1 / (3362 * 47%) * 0.586 * 1000 = 3.004
Nismo (Weight: 3362 lbs)
Front 8.6K : (8.6 * 0.7) / (3362 * 53%) * 1000 = 3.378
Rear 9.3K : 9.3 / (3362 * 47%) * 0.586 * 1000 = 3.449
Nismo (Weight: 3362 lbs)
Front 11K : (11 * 0.7) / (3362 * 53%) * 1000 = 4.321
Rear 10K : 10 / (3362 * 47%) * 0.586 * 1000 = 3.709
--------------------
350Z
Stock 2003-2004 (Weight: 3239 lbs)
Front 5.5K : (5.5 * 0.7) / (3239 * 53%) * 1000 = 2.243
Rear 6K : 6 / (3239 * 47%) * 0.586 * 1000 = 2.310
Stock 2005-2007 (Weight: 3239 lbs)
Front 5.5K : (5.5 * 0.7) / (3239 * 53%) * 1000 = 2.243
Rear 7.5K : 7.5 / (3239 * 47%) * 0.586 * 1000 = 2.887
Nismo (Weight: 3239 lbs)
Front 7.85K : (7.85 * 0.7) / (3239 * 53%) * 1000 = 3.201
Rear 8.84K : 8.84 / (3239 * 47%) * 0.586 * 1000 = 3.403
Ohlins
Front 10K : (10 * 0.7) / (3239 * 53%) * 1000 = 4.078
Rear 7K : 7 / (3239 * 47%) * 0.586 * 1000 = 2.695
-----------------------
G35(V35) Base (Weight: 3442 lbs)
Front 5K : (5 * 0.7) / (3442 * 53%) * 1000 = 1.919
Rear 5.4K : 5.4 / (3442 * 47%) * 0.586 * 1000 = 1.956
G35(V35) Sport (Weight: 3442 lbs)
Front 5.5K : (5.5 * 0.7) / (3442 * 53%) * 1000 = 2.110
Rear 6K : 6 / (3442 * 47%) * 0.586 * 1000 = 2.173
G37 IPL (V36) (Weight: 3781 lbs)
Front 9.8K : (9.8 * 0.7) / (3781 * 53%) * 1000 = 3.423
Rear 8.02K : 8.02 / (3781 * 47%) * 0.586 * 1000 = 2.645
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個人積分：1012分
文章編號：86606710
At that time I believed that Nissan's springs were stiffer but Honda's dampers were stiffer after I had driven both cars interchangeably ... I think I was right!!!
(Stiffer dampers will let cars more stable but also let cars become more uncomfortable!!! Stiffer springs will NOT reduce ride comfort a lot but will let cars become unstable if the road condition is bad!!! )
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個人積分：1012分
文章編號：86609040
個人積分：1012分
文章編號：86612609
Civic Coupe Base (FG, OEM, 2769 lbs)
Front 2.98K : 2.98 / (2771 * 61%) * 1000 = 1.763
Rear 3.5K : 3.5 / (2771 * 39%) * 0.7 * 1000 = 2.267
Civic Coupe Si (FG, OEM, 2945 lbs)
Front 3.5K : 3.5 / (2906 * 61%) * 1000 = 1.974
Rear 4.08K : 4.08 / (2906 * 39%) * 0.7 * 1000 = 2.520
Civic Sedan Base (FC1/FC3, OEM, 2771 lbs)
Front 2.36K : 2.36 / (2771 * 61%) * 1000 = 1.396
Rear 2.77K : 2.77 / (2771 * 39%) * 0.7 * 1000 = 1.794
Civic Sedan Si (FC1/FC3, OEM, 2906 lbs)
Front 2.53K : 2.53 / (2906 * 61%) * 1000 = 1.427
Rear 3.66K : 3.66 / (2906 * 39%) * 0.7 * 1000 = 2.261
Civic Type R (FK8, OEM, 3121 lbs)
Front 4.44K : 4.44 / (3121 * 62%) * 1000 = 2.295
Rear 4.44K : 4.44 / (3121 * 38%) * 0.7 * 1000 = 2.621
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個人積分：1012分
文章編號：86613203
2015 Stock WRX STI (3367 lbs)
Front 5.8K : 5.8 / (3367 * 60%) * 1000 = 2.871
Rear 5.3K : 5.3 / (3367 * 40%) * 0.8 * 1000 = 3.148
2015 Ohlins WRX STI (3367 lbs)
Front 9K : 9 / (3367 * 60%) * 1000 = 4.455
Rear 7K : 7 / (3367 * 40%) * 0.8 * 1000 = 4.158
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