Just an FYI update for people interested in other rotor options. ECS tuning has come out with two piece "semi floating" drilled and slotted rotor. The weights according to ECS are as follows:
BMW E82 135i N54 3.0L > Braking > Rotors > ES#2550968 2-Piece Brake Rotors - Pair (338x26) - 000506ECS01AKT
- 135i stock solid rotor 22.5 lbs
- BMW Performance 135i rotor 21.4 lbs
- ECS two piece rotor 17.8lbs
BMW E82 135i N54 3.0L > Braking > Rotors > ES#2550968 2-Piece Brake Rotors - Pair (338x26) - 000506ECS01AKT
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