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      01-23-2013, 12:05 AM   #1

Drives: 2008 135i, 2011 328i xDrive
Join Date: Jan 2008
Location: Canada

iTrader: (2)

135i OE front strut question

I have removed my front struts to install camber plates. When I remove the OE upper strut mount from the strut the shaft lowers itself into the strut to approximately mid height, maybe a bit lower. It takes a very strong pull to extend the strut fully - in fact I can't pull that hard by hand. Both struts behave the same way. Both have fluid in them and don't appear to be leaking. When they are fully compressed by hand, they extend slowly to the mid-extension position, so they have fluid and gas in them.

Two things:

1) I don't think I can compress the spring enough to get the struts assembled again, because the strut is not fully extended.

2) I can't figure out how a strut can behave this way. I expect a pressurized strut to extend fully when unconstrained, not to only extend half way.

Do BMW struts have some mysterious internal construction that make them behave that way, or is this abnormal?