Eibach 6383.140 for 07 on 09+ Sedan?
If this info helps anyone...
Called Eibach. Said the rear springs are actually the same part number. The front max spring rate for the G35 kit (6383.140) is 480lbs while the front for the G37 kit (6390.140) is 548lbs. Same min spring rate...280-ish. I don't remember exactly. The guy said the probable result is that the front may sit slightly lower at rest and be slightly softer driving.
Called Eibach. Said the rear springs are actually the same part number. The front max spring rate for the G35 kit (6383.140) is 480lbs while the front for the G37 kit (6390.140) is 548lbs. Same min spring rate...280-ish. I don't remember exactly. The guy said the probable result is that the front may sit slightly lower at rest and be slightly softer driving.
This may help~I purchased B&G S2 springs for an 07-08 G35 which were rated as a 1.4" drop F&R, I ended up w/ the perfect drop IMO, it came out to 2" Front and 1.5" Rear.
I'd imagine the Eibach kit for an 07-08 would perform about the same giving you an additional 1/2" drop in the fron and the rear wouldn't change from the 07-08 drop.



I'd imagine the Eibach kit for an 07-08 would perform about the same giving you an additional 1/2" drop in the fron and the rear wouldn't change from the 07-08 drop.



This may help~I purchased B&G S2 springs for an 07-08 G35 which were rated as a 1.4" drop F&R, I ended up w/ the perfect drop IMO, it came out to 2" Front and 1.5" Rear.
I'd imagine the Eibach kit for an 07-08 would perform about the same giving you an additional 1/2" drop in the fron and the rear wouldn't change from the 07-08 drop.




I'd imagine the Eibach kit for an 07-08 would perform about the same giving you an additional 1/2" drop in the fron and the rear wouldn't change from the 07-08 drop.




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