Quote:
Originally Posted by Used2be
Quote:
Originally Posted by josec70
The KW Kit is very good if you're looking for OEM ride quality and adjustability with little bounce or rebound.
It will be interesting to see the M-Performance Kit and how it looks, and more importantly, feels.
I've had KW HAS on two F10 M5's as well as my F90 M5C and have been pleased overall.
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I'm wondering why the BMW suspension engineers decided to approach their HAS differently than KW? KW uses the helper spring to keep tension on the main spring if you choose to use the maximum drop of adjustment. Does the BMW method give a smoother ride with more large diameter spring to use for all of the travel? But, which has the more firm ride?
I wish either BMW or KW would give their customers more information on the spring rates. All I've heard from the KW distributor is that they're progressive, so we can't give you a rate. Perhaps that's true, but they could easily put them on a test rig, start pressure readings at installed height, and then give a pound reading every 1/4" of travel until coil bind, or whatever the suspension travel is. That way we'd have a way to compare the kits.
I've asked IND if they might do that, or have Fall Line do that, but doubt either will do it. Not much incentive for them to take the trouble. I'm considering spending the extra money for the BMW HAS just to see. I had the KW v3 on my F10 and thought it was very good, but I'm not going to spend the money for their v4 for the F90. |
100% .....
V4 is the route IMO but so pricey. Looking forward to your feedback on the BMW HAS.