The ball joints are new. I replaced the entire arm with Lemfoerder about a year ago. when I grab the wheel at 12 and 6 there is no slack.

Strut mounts are also 1 year old too. Shocks are old though and have 100k on them at least.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k

to test the wheel bearing slop - by the 12/6 o clock method - you first need to compress the caliper and then remount the wheel.

you did replace the arm - but it wont hurt to check the parts again, Lift the car with the jack under the control arm and then try to wrestle the joint and spindle with a pry bar.

New parts can also fail.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

+1 on the wheel bearing play.

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1986 300E (3/2002) Rear ended and totaled (10/2009)
2000 Xterra (5/2000)
1992 400E (11/2009) -Sold
1986 300E (12/2009) - Sold
2004 E500 Wagon (6/2013) - Sold