Quote:
Originally Posted by tjswarbrick
Spring Front / Rear rate (lbs/in)
135i(M-Sport) 120 / 350
E90 Sport 145 / 460
E90 BMWP 195 / 505
E90 M3 160 / 550
Dinan E82 144 / 490
Cobb E82 142 / 457
Swift E82 201 / 503
BMWP T1/T2 135 / 420
BMWP T2/T3 146 / 460
BMWP T3/T4 160 / 495
KW Street Comfort 286 / 572
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That's fantastic man great job digging this all up. I've found some conflicting information but this looks to match what I was able to confirm. Most of the info that I have on the performance suspension came from
this thread, but I found a few posts to contradict each other.