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      12-01-2021, 04:15 PM   #1
lafuerza
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Input on MCS and JRZ Suspension

Anyone have experience with JRZ or MCS suspension on Z4M Coupe for track and canyon runs. Car is not a daily and expected to perform but not rattle interior apart.

Currently has KW3 with Vorshlag plates and adjustable arms and endlinks. Very comfortable until you hit a big bump and then it crashes and way to soft for track and not not confidence inspiring with progressive springs when driving harder.

Thoughts on spring rates. Car has front and rear sways, AKG bushings, 4.10 diff, and 265/35/18 square setup with Brembo BBK front and back as well as Aero lip and wing.
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2007 Z4M Coupe. KW3, Stoptech ST60/ST40, SSK, AKG Bushings, 4:10 Diff, ARP Wing, ARP Splitter, MFR Splitter Underpanel.
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      12-03-2021, 04:47 PM   #2
ANILE8
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No and no, but both brands would be excellent and have equivalent models.

Which model are you looking at specifically and what is your price range?

I've never understood why so many on here buy KW V3's seemingly by default, they have never struck me as anything special.

I'm currently running F400/R500 on the street and they feel fine.

Spring rates are usually somewhere around these:

Stage 1
F: 450 lbs/in
R: 550 lbs/in

Stage 2
F: 650 lbs/in
R: 750 lbs/in

Stage 3
F: 800 lbs/in
R: 900 lbs/in
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Nitron NTR R3 | StopTech Trophy Sport STR-60 380x32mm / StopTech Trophy Sport STR-40 355x32mm | Bridgestone RE-71RS | ADV.1 | CDV Delete | TMS Rear Camber Arms | RE Diablo's | 4.10 Gears | Euro Headers | RTD REVO1 Short Shifter
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      12-04-2021, 07:20 AM   #3
kk2
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If you can be flexible on timing, I have like new jrz rs 2 way with GC camber plates I’m going to be pulling off at some point. Shoot me a pm if interested.
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