This 2005 base Cooper is new to me. I can't decide if this wear pattern is toe or camber. The attached pictures show the wear on the inboard side of the rear tires. It looks like toe wear if you look closely at the left side of the tire. I checked the trailing arm bushings and both sides look good to my experienced eye. Same for the control arms and bushings. I'm getting new tires tomorrow. The problem isn't bad enough that I need to have it fixed ASAP, but I want to get at it soon. The trailing arm brackets are positioned pretty far to the outside of the car on each side. Best case is I have too much negative toe on the problem tire, which seems to be correctable since the bracket has some movement potential inboard. The other rear tire (passenger rear tire) has an even pattern. So do the front wheels.

What say you, Mini experts? Probably a simple toe correction? If more than a toe issue I will wait on the cost of the alignment until I get adjustable control arms.

 

There's about 3° camber built in to the suspension configuration on purpose. It is part of the bull dog stance and gives the car additional cornering capabilities. Most guys rotate their tires at around 5K mile intervals. Directional tires rotate front to back same side, bidirectional rear crossed to front and front straight back.

 

 

Toe and camber are two entirely different adjustments. You would more than likely get very frustrated trying to find reference to it with the search engine, but guys fooling around with those adjustments have often caused more problems than they tried to solve. Most old timers would advise to leave things the way they are designed. Those Germans stay pretty close to what their slide rulers tell them.
If you really need camber adjusted for competitive driving check with some of the listed vendors for adjustable camber plates.