MB 2-piece light weight rotor (Gain more miles per gallon & hp at the wheels)

It looks like at least the front brakes below have the 5 mm lip as the OP above stated. That might be good for measurement (and rusting) but I can't help but think it would lead to warping?
Grane
We have the discs and will make the hats for these earlier models, with 6-8 weeks lead-time.
Weight info:
Front OE 1pc = 37 lbs, RB 2pc = 22 lbs (estd.) Save 15 lbs/rotor
Rear: OE 1pc = 21 lbs, RB 2pc = 13.5 lbs (estd.) Save 7.5 lbs/rotor
Total weight waving per car (for 4 rotors) = 45 lbs
We also like to make our excellent street (ET) and track (XT) pads available to go with these two piece rotors to enhance the overall performance.
They are more seen in European cars especially with Brembo calipers like MB, 5mm in diameter (2-3mm lip) over the actual pad swiping area is very common.
The rusty lip should have nothing to do in warping, but it can help to visualize the rotor wear w/o having to physically measure it.



