Labor Day Resurrection:
I came across the ride height debate in another thread:
https://xoutpost.com/bmw-sav-forums/...sing-inpa.html . Being the second owner of the 4.8is I have, the thread I linked poked my interest and after looking at my truck parked on level ground, the ride height appears to be off. Further investigation with a tape measure and finding this current thread via a search in Google, has proven to me that my eyes are not lying. The front end looks like it's got a slight lift kit.
However, I have followed everyone's advice on measuring and data input but get an error message when inputting my newly calculated values into INPA. What's more is that the software is reading "current" measurements that are way off the OEM specs that are provided within INPA on the calibration page. As we all know for the 4.8is sport suspension (in mm) the:
front axle = 707
rear axle = 709
INPA is reading my truck at:
LF = 596 RF = 455
LR = 432 RR = 515
However, these measurements don't make sense because my personally measured numbers are:
LF = 717 RF = 725
LR = 703 RR = 709
Following the INPA V.5.0.6 work flow I select:
e53>chassis>two-axle air suspension>F6>F5
which brings up the electronically measured numbers above and displays the OEM ride heights where they need to be all on the same page. I then select calibrate, which brings up a small window instructing me to subtract the current measurement from the OEM recommendation. My assumption is that I take the electronically measured number (current) say LF = 596 - 704 = -108. I then put -108 into the field, click ok. I get an error message stating the value is invalid.
Am I to use my physical measurement with the tape measure (as my current) minus the required (OEM) and input this into the fields and ignore the electronically measured numbers? Before doing that, let's back up a step: how I am to baseline the suspension to factory?
The final goal is to drop the entire truck around 25 mm, maybe 30 mm in the front.