What is the appropriate amount of rear "squat" for an '06 Cabrio. Notice a significant "out of perpendicular" rear wheels.

 

What you're seeing is probably normal. Stock is -1.75 deg of rear camber if memory serves (which is a fairly large amount). Which, with stock swaybars and stock front camber, makes the car resist oversteer A LOT. I've added front camber (to about -1.75 from -0.5 deg), reduced rear camber (to about -1.2deg) and added a stiffer rear swaybar to make the car more neutral.

if you've lowered the car (springs, coilovers) then the amount of rear camber will increase unless you add adjustable lower control arms to pull it back in.

With less rear camber, you'll wear the rear tires more evenly, but the rear will be a bit more prone to "coming around" on tight corners (which some of us WANT).

 

-1 to 1.5 is considered optimal on a non-modded MINI.

Otherwise Blimey has it right on.

 

Since I said I'm dialed in at -1.2deg... I think the "otherwise" is out of place...

 

Guess I could have worded that better...........

Just meant that what you said was correct