Quote:
Originally Posted by Caduceus
I'm not sure what reference points they use to measure ride height but it sounds like they use the same method as me. I hook the end of the tape measure under the edge of the rim on the lower half of the wheel. This takes the tyre out of the equation, regardless of profile and inflation pressure. I take the measure up through the centreline of the wheel to the edge of the guard.
The alternative of measuring from the hub centre to the guard is too prone to error since it's hard to visualise the exact centre point.
Doing this, I currently have the car set at 597mm up front and 599 at the back. Before lowering it was 625mm front left and 620mm front right (so not quite even) and 619mm at the rear. This is where I got my 25mm front and 20mm rear lowering numbers from.
With your post-lowering alignment figures, are you saying that was what they aligned it to or that was was it just happened to be after lowering it?
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Yes, that's how BMW say to measure it too.
Looking back at the installation instructions it suggests setting the ride height on the MPS with 2 x 75kg on the front seats, but nothing about the back. It does go on to say "adjust the (rear) toe as per ISTA", which would suggest a fully laden car.
Edit:
Those are the figures they aligned it to as the figures quoted are the target values on the print out (and the measured figures post alignment are very close).