Problem reported by MB World forum member:
GLK handle shakes when step on brake
RacingBrake has a solution to end this repeated warping rotor issue, and save your hassles in bringing your GLK to dealers and replace a new OE rotor under warranty which we know is going to warp again until warranty expired...
RB two piece rotors are made with alloyed cast iron and heat-treated, so you can run it the way you like and are used to; w/o these suggested per-cautions, and they can provide you the stopping power you need against any malfunction including warpage.
Design is up.
Here is the link to purchase:
RB two piece rotors are designed and made for a 100% bolt on installation
not only they can improve the performance and durability but can also save you 5.2 lbs per rotor or 10.4 lbs per axle.
Testimonial on RB two piece light weight rotors for an E63 customer (Incl. Spirited /HPDE drivng) lasting more than 100,000 miles & 5 years before replacement is needed.
Not only it's the most durable rotors ever installed for E63 but you don't see that many brake mfgr/supplier lasts longer than 5 years nowadays.