Join Date: Feb 2019
Location: Shoreline CT
Vehicle: 2005 SLK 55 AMG
Other Toys: 1978, 1981 Yamaha SR500
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 42 Post(s)
Thanked 0 Times in 0 Posts
2-piece Brembo front rotors for USD 548.86 per pair
efair: I've not disassembled my two piece rotors yet, and will probably just replace all pieces soon... But it's at least with a discussion: After you measure the difference in run-out, hat vs rotor, do you then mark and adjust the many little bolts present? Or do you loosen them all, then follow some process to align them? [/QUOTE=efair;4512414
Bart: I believe you tighten the little bolts in a criss-cross fashion, rather than “going around the ring.” Not sure what what the torque value is for the little bolts, but I bet somebody does.
efair: It does beg the question "why two piece rotors in the first place". Unsprung weight savings? Or what?
Bart: I doubt the aluminum hat adds much weight to the complete rotor; my guess is heat dissipation — something aluminum is very good at — which would explain the rectangular aluminum stand-offs, which I think transfer rotor heat to the aluminum hat, but of course I could be completely wrong. Anybody know?
efair: Do the rotors move in relation to the hat when driving? Or over time as the pads wear? Or are they rigidly attached to each other?
Bart: They’re rigidly attached, and the rotors do NOT move in relation to the hat when driving.
efair: I wholeheartedly agree this is not an area where you want any uncertainty or compromises![/QUOTE]