New 2009 2010 BMW Z4 - ZPOST - View Single Post

Kessler35is · 07-28-2013, 11:34 AM

They are air, with everything off you can hear them being pumped up and can hear the air being released (Motor sound when adding and no motor when being released). The lumbar is also air filled, or so it sounds like it is to me.

07-28-2013, 11:34 AM	#11
Kessler35is Second Lieutenant 48 Rep 247 Posts Drives: 2015 F15 50i, 2016 E89 35is Join Date: Jun 2013 Location: Tupelo, MS. iTrader: (0) Garage List 2016 Z4 35is [0.00] 2015 X5 50i [0.00]	They are air, with everything off you can hear them being pumped up and can hear the air being released (Motor sound when adding and no motor when being released). The lumbar is also air filled, or so it sounds like it is to me.
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