BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)


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      12-19-2017, 02:27 PM   #67

Drives: 2008 135i, 2011 328i xDrive
Join Date: Jan 2008
Location: Canada

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Originally Posted by 3k1n View Post
I considered going with coilovers but I dont want to have to deal with the hassle and added cost of corner balancing the car. I would assume that whenever you install coil overs you would need to corner balance the car right?
No, you can just set the spring perches by measurement. The ability to corner balance is a bonus, not a necessity.
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      02-11-2019, 02:20 PM   #68
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Drives: AW 135i N55
Join Date: Nov 2012
Location: Sweden

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Originally Posted by Cpt_Rum-bo View Post
Someone posted these previously. Not sure of the accuracy, but if they are correct, I will be testing out the Bilstein PSS. Hopefully it will fit without issues, since I did the 255/35/18 square conversion.


Front: 120 lb/in
Rear : 350 lb/in

e90 ZSP or e92
Front: 145 lb/in
Rear: 460 lb/in

e90/e92 BMW Performance (Calculated given that the material of this spring is the same as the ZSP springs)
Front: 195 lb/in
Rear: 505 lb/in

Front: 160 lb/in
Rear: 550 lb/in


KW v1-v3 (non M3)
Front: 190-256 lb/in (progressive average)
Rear: 545-570 lb/in (progressive average)

KW Street Comfort
Front: 286 lb/in
Rear: 572 lb/in

KW Clubsport (non M3)
Front: 400 lb/in
Rear: 570 lb/in

M3 KW v3
Front: 285 lb/in
Rear: 630 lb/in

M3 KW Clubsport
Front: 508 lb/in
Rear: 800 lb/in

Bilstein PSS10
Front: 385 lb/in
Rear: 615 lb/in

Eibach Pro-kit
Front: 148 lb/in
Rear: 456 lb/in

Eibach Multi-Pro-R1
Front: 200 lb/in
Rear: 500 lb/in

Eibach Pro Street S
Front: 134 - 271 lb/in (Progressive)
Rear: 456 lb/in (Linear)

HKS Hypermax
Front: 448 lb/in
Rear: 504 lb/in

Tein Stech
Front: 191 lb/in
Rear: 593 lb/in

Tein Euro Damper System
Front: 280 lb/in
Rear: 392 lb/in

Tein ss-p
Front: 392 lb/in
Rear: 671 lb/in

JIC-Magic Cross
Front: 450 lb/in
Rear: 674 lb/in

TC Kline Coils
Front: 350 lb/in
Rear: 700 lb/in

HP Autowerks Coilover System
Front: Custom Tailored 300-500 lb/in (Contact HP Autowerks)
Rear: Custom Tailored 500-1000 lb/in (Contact HP Autowerks)

Adding new data from KW:

Street Comfort (for E82 135i 18020039)
Front: 213 lbs/in 60210179
Rear: 550 lbs/in 60210152
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AW 135i 2011 MT6
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