Just did this mod on my ti this past weekend. I could not find any E46 calipers/brackets, so went with some low mileage units from an E36 328. I really wanted the extra 0.5-inch rotor size that the E46 330 calipers would have allowed, but just could not find any wrecked E46 330's from which to harvest the brackets. Approximate costs were as follows:
Used front 325/328 R/L calipers (2) $150.00
Stock Front 328 Rotors (2) $80.00
Stock Rear 318ti Rotors (2) $70.00
S/S brakelines (6) from TireRack $149.00
Front Brakepads (metalmaster) $47.66
Rear Brakepads (metalmaster) $39.81
Valvoline Synthetic DOT 4 brake fluid - included
parts total ~$540.00
Labor 4 hours 280.00
approx $820.00 including shipping
Had to bleed the brakes completely twice to get all the air out (bled once, then drove it to get initial seating of pads, then bled again)....probably the same as cycling the ABS that Steve did. Since I got some low mileage calipers, I did not see a need to rebuild them. They did have some ugly salvage yard numbers painted on them, so when everything was installed (and before the wheels were remounted), we wire brushed them, then used some black engine paint and painted the calipers and brackets. The painting only took about an extra 10 minutes, cost next to nothing, and gives it a slightly custom look.
I can already feel the difference...can't wait until the pads are completely seated and I can drive them hard!
Really glad I did not spend the extra $ on M3 parts.
