PeachParts Mercedes-Benz Forum - View Single Post - I think these rotors are due for a change..

layback40 · #13 09-15-2012, 04:49 AM

Quote:

Originally Posted by t walgamuth

I've seen similar things in the salvage yard. It may actually have been on Pintos too. A long time ago. I wondered if the bad rotor caused the accident that put the car in the yard.

I am with you on this one Tom.
It looks like the caliper had jammed a long time ago & was only working on one side of the disk. The cast iron disk is no match for the steel backing plate. Like you, I have seen badly worn disk rotors on junk cars. Normally the rotors crack along the sides of the radial flutes & the wedge shaped pieces fall out. The brakes grab badly when this occurs. I saw a Celica with disks missing many pieces. Eventually the piston comes out too far & does not retract. This jams the rotor & stops the car suddenly.
On the W123 with solid disks, the disk can crack around the inner part that attaches to the hub & then no braking.
Those who doubt the pic probably just lack seeing extream situations like this.