lb/in => kg/mm: Multiply by 0.01786
kg/mm => lb/in: Multiply by 56
S13 Spring Rates
Stock '92 (from FSM)
_ _ _Front & Rear: 102 lb/in _ _
_ _ _Front & Rear: 110 lb/in w/ HICAS
Eibach ProKit
_ _ _Front: _114-200 lb/in | -1.8"
_ _ _Rear: _ 114-148 lb/in | -1.6"
Eibach Sportlines
_ _ _Front: _137-230 lb/in | -2.2"
_ _ _Rear: _ 128-200 lb/in | -2.1"
JIC FLT-A2
Front: 8 kg/mm | NA
Rear: 6 kg/mm | NA
KGMM S21 Sport
front: 3.2 kg/mm | 179.2 lb/in
rear: 2.6 kg/mm | 145.6 lb/in
KGMM S21 SuperSport
front: 4.6 kg/mm | 257.6 lb/in
rear: 3.8 kg/mm | 212.8 lb/in
KGMM S21 Racing
front: 6.6 kg/mm | 369.6 lb/in
rear: 5.2 kg/mm | 291.2 lb/in
Suspension Techniques: 1.3" drop
_ _ _Front: _206 lb/in | -1.3"
_ _ _Rear: _ 155 lb/in | -1.3"
5Zigen R-Rate
_ _ _Front = 2.4-5.2 kg/mm | 134-291 lb/in | -1.3"
_ _ _Rear = _1.9-5.0 kg/mm | 106-280 lb/in | -1.1"
Tein HA
_ _ _Front = 6 kg/mm | 336 lb/in
_ _ _Rear = _5 kg/mm | 280 lb/in
Tein HE
_ _ _Front = 8 kg/mm | 448 lb/in
_ _ _Rear = _6 kg/mm | 336 lb/in
Tein RA _
_ _ _Front = 10 kg/mm | 559 lb/in
_ _ _Rear = _ _8 kg/mm | 448 lb/in
Tein RE
_ _ _Front = 10 kg/mm | 559 lb/in
_ _ _Rear = _ _8 kg/mm | 448 lb/in
Tein RS
_ _ _Front = 10 kg/mm | 559 lb/in
_ _ _Rear = _ _8 kg/mm | 448 lb/in
Tein FLEX
_ _ _Front = 5 kg/mm | 280 lb/in
_ _ _Rear = _4 kg/mm | 224 lb/in
Tein S.Tech
_ _ _Front = 3.2 kg/mm | 179 lb/in
_ _ _Rear = _2.9 kg/mm | 162 lb/in
Whiteline
70055 Front: 155Lbs/in | -35mm
70049 Back: 165Lbs/in | -40mm
Zeal Function B-6
Sreet Spec:
_ _ _Front = 6 kg/mm | 336 lb/in
_ _ _Rear = 5 kg/mm _| 280 lb/in
Circuit Spec:
_ _ _Front = 8 kg/mm | 448 lb/in
_ _ _Rear = 7 kg/mm _| 392 lb/in
S14 Spring Rates
Apexi N-1 Coilovers
_ _ Front = 8 kg/mm | 448 lb/in
_ _ Rear = _6 kg/mm | 336 lb/in
Eibach ProKit
_ _ _Front: _137-228 lb/in | -1.2"
_ _ _Rear: _ 114-240 lb/in | -1.0"
Eibach Sportlines
_ _ _Front: _109-171 lb/in | -1.7"
_ _ _Rear: _ 114-160 lb/in | -1.4"
JIC FLT-A2
Front: 8 kg/mm | NA
Rear: 6 kg/mm | NA
kg/mm DR21
_ _ _Front = 4.8-3.0 kg/mm | 269-168 lb/in
_ _ _Rear = _4.0-2.8 kg/mm | 224-157 lb/in
kg/mm DR Racing
_ _ _Front = 6.6-3.2 kg/mm | 370-179 lb/in
_ _ _Rear = _5.2-2.4 kg/mm | 291-134 lb/in
RSR Hard Springs
_ _ _Front = 5.0 kg/mm | 280 lb/in
_ _ _Rear = _4.2 kg/mm | 235 lb/in
TANABE SuperH
_ _ _Front = 3.0 kg/mm | 168 lb/in | -28mm
_ _ _Rear = _4.0 kg/mm | 224 lb/in | -9mm
TRUST Sport Springs
_ _ _Front = 2.6 kg/mm | 146 lb/in | -25mm
_ _ _Rear = _2.6 kg/mm | 146 lb/in | -25mm
HKS Super Sports
_ _ _Front = 4.14 kg/mm | 232 lb/in
_ _ _Rear = _3.46 kg/mm | 194 lb/in
Tein HA kg/mm
_ _ _Front = 6 kg/mm | 336 lb/in
_ _ _Rear = _5 kg/mm | 280 lb/in
Tein HE
_ _ _Front = 8 kg/mm | 448 lb/in
_ _ _Rear = _6 kg/mm | 336 lb/in
Tein RA
_ _ _Front = 10 kg/mm | 559 lb/in
_ _ _Rear = _ _8 kg/mm | 448 lb/in
Tein RE
_ _ _Front = 10 kg/mm | 559 lb/in
_ _ _Rear = _ _8 kg/mm | 448 lb/in
Tein RS
_ _ _Front = 10 kg/mm | 559 lb/in
_ _ _Rear = _ _8 kg/mm | 448 lb/in
Tein FLEX
_ _ _Front = 6 kg/mm | 336 lb/in
_ _ _Rear = _5 kg/mm | 280 lb/in
Tein S.Tech
_ _ _Front = 4.8 kg/mm | 269 lb/in
_ _ _Rear = _4.4 kg/mm | 246 lb/in
Whiteline:
70055 - front, linear rate 157 lbs/in. | -25-40mm
70054 - rear, progressive rate 107 > 178 lbs/in. | -25-40mm
Zeal Function B-6
Sreet Spec:
_ _ _Front = 6 kg/mm | 336 lb/in
_ _ _Rear = _4 kg/mm | 224 lb/in
Circuit Spec:
_ _ _Front = 8 kg/mm | 448 lb/in
_ _ _Rear = _6 kg/mm | 336 lb/in