Obioban's 2005 IR/IR Coupe

[0-60motorsports]

Been a while since I got to do a mod on the M3. Been busy with house construction/e60 M5/never ending Land Cruiser refresh.

Anyway, made my trunk a bit less practical.

Love it.

[Obioban]

Haven’t actually driven the car yet. Been doing shake down on a friends e38 750il rebuild the last week of DDing

I’d expect WAY less benefit from this than the Slon wall. But, the price was nearly free, so…

also debating tying it to the subframe mount points. Currently chatting with Vince about if that’s viable with the Vince bar installed. But, that would REALLY reduce trunk functionality.

[Obioban]

I do wonder if the Slon wall makes a rear strut tower brace more effective— the rear spring mounts are positioned between the bulkhead and the shock towers, so maybe this boxes out the load path?

[Bry5on]

I think it does a while lot of nothing, especially with the Slon wall. If you want to tie it to the Vince bar, some rivet nuts into the bar should do it. I’d go inward of the subframe mounts and cross the brace to the other side for maximum stiffness. But my sense is that this is a diminishing returns situation.

[George Hill]

Agreed, I think the Slon wall is doing the heavy lifting. Certainly can't hurt but IDK if its worth loosing the trunk space over.

[Obioban]

My assumption was that they didn't do a ton, until I noticed BMW has one on the M3 GTR street car.



From: https://www.youtube.com/watch?v=rKm0FPh3UtQ