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      02-21-2023, 04:13 PM   #60
Blue Angel
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Drives: 2011 323i and 2016 535d
Join Date: Mar 2011
Location: Ottawa, ON

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The 10k/7k springs were a disaster all around. After several discussions with them, we’re not sure why. I suspect the springs were incorrect both front and rear, but they didn’t want them back for testing so we’ll never know.

They recommend 2 turns (4mm) of preload, but they nearly rode on the bump stops and had nearly zero travel like that. So I went to 10 turns (20mm) preload and got coil bind (spring coils touched, exceeded the spring travel).

Once I installed the 12k/8k Swift springs everything was fine. I presume everything would have also been fine with the standard 12k/8k springs.
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