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M 4 FUN · 05-15-2019, 11:04 AM

Hi everyone. Johnny from Sweden here. I run the H&R adjustable VTF-kit on my 2017 M4 comp pack. ( Variable Tieferlegung Federn)

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My dealer contacted H&R by my request to get the springrates so here they are:Rear is 253lb/in, or 105N/mm, 28% softer than stock comp pack.
Front is 39 lb/in, or 45 N/mm, 18% stiffer than stock comp pack.
I am very satisfyed with this kit and as the M4 is a bit tail happy and loose grip quite abruptly i feel that a bit slightly more built in understeer is not bad, especially on a tuned car.

Johnny Lehti

05-15-2019, 11:04 AM	#118
M 4 FUN Captain 606 Rep 642 Posts Drives: 320 Si, M4 comp. M3 E46 Join Date: Aug 2016 Location: Sweden iTrader: (0)	H&R VTF adj. sleeve kit values. Hi everyone. Johnny from Sweden here. I run the H&R adjustable VTF-kit on my 2017 M4 comp pack. ( Variable Tieferlegung Federn) . My dealer contacted H&R by my request to get the springrates so here they are:Rear is 253lb/in, or 105N/mm, 28% softer than stock comp pack. Front is 39 lb/in, or 45 N/mm, 18% stiffer than stock comp pack. I am very satisfyed with this kit and as the M4 is a bit tail happy and loose grip quite abruptly i feel that a bit slightly more built in understeer is not bad, especially on a tuned car. Johnny Lehti Last edited by M 4 FUN; 10-03-2019 at 05:06 PM..
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