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Old 02-29-2016, 10:14 PM   #1
catimann
1st Gear Newbie
 
Join Date: Feb 2016
Location: Surrey BC
Posts: 1
New but not



Hi all, I am new here but not to BMW. I have a 98 Z3 that I have had for 4 years.

Love the car and plan to keep it. I am looking at buying a RF subframe kit for it next after I finish changing the clutch.

I have been reading about the subframe law suits etc on another forum site and wondered what had happened in Canada. That is why I ended up here.
I have a feeling I am too late getting to the party on this one.

Still I would like to get the Coles notes on the issue, if someone knows.

Thanks.
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Old 03-04-2016, 10:56 AM   #2
Swaybars
1st Gear Newbie
 
Join Date: Oct 2011
Location: Toronto
Posts: 25
Sub-frame issue is a misnomer. It is actually a design flaw in the differential mount and the part of the trunk floor that the mount attaches to. The mount itself is too weak to support the differential in certain conditions and the spot welds on the trunk floor that support the mount are also too weak.

Be aware that the Randy Forbes kit requires MAJOR work in the rear of the car to install. Last quote I heard was around $3000 just for labour to install and this was a couple of years ago. Randy has a website where he extensively documents the cars he works on. You can get an idea of what is involved by browsing through the gallery. -->http://www.spcarsplus.com/gallery3/index.php/?page=30

People are suggesting the failure happens when driving aggressively at the track and/or doing a lot of manoeuvres that get the car sideways. If you don't do this types of activities you are probably fine. Get under your car and inspect the diff mount, then inspect the spot welds in the trunk for tears, cracks or separations.

I bought my car from the US with the RF kit installed so I am not sure what the situation was in Canada regarding having to deal with BMW about this issue.
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