Test fitted a rear caliper and bracket combo. It's a cable type caliper, but since it looks like it will work, the plan is to strip a pair down, weld and machine and swap parts to get them motorised. This will fix the lack of clearance to 15" wheels. Caliper is 36mm instead of the stock 34mm. My brakes were somewhat heavy with 245/35 sticky tyres, so this is a good upgrade. Not sure on front calipers, yet. Could be aluminium Prius, e90, Malibu or some 4 pots. The 4 pots are 3kg lighter, each, than the stock f56 ones, which is very tempting.
I also tried out the nearest supercharger. It let me plug in, but the car spent a minute 'calculating' before giving up. Calling Tesla support was a total waste of time. All they can see is which units are marked as down. Which I can see in the app, which likes to crash. No other diagnostics, at all. Worst support yet of any fast charger! The charging summary in my app is blank. Tesla support can't even access that. Apparently, I need to get Mini to work out why my car can charge fine from CCS, but not from a supercharger. I'm not optimistic...