Jack, see this thread for all your need to know about my wheels. Btw, I confirmed yesterday that my 225 semi-slicks is WIDER than the OE 245.
Can you send me Bird's email address? I have a way of helping them keep the cost of the AP Kits down. We are manufacturing a couple of the hats for the brakes here for the 135i, which he also will have to do for yours and others he intends to sell. We may be able to do it cheaper for him given the exhange rates and also the scale.