2009 S550 4Matic Rotors
02-10-2017, 12:06 PM
#26
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2015 S550
My indy, where I take mine, my wife's, and my kids cars for all non-warranty repairs and maintenance....and who also take care of all of our employees cars, has told me that the rotors always should be changed with the pads on German cars due to thin rotors. It's even specified in your service manual. I've known these guys for many years and I know for certain they aren't a "stealer". Perhaps you guys in the UK get thicker rotors than we do over here.
Perhaps Konigstiger and/or Alx will chime in here and offer their opinions.
Perhaps Konigstiger and/or Alx will chime in here and offer their opinions.
02-10-2017, 12:09 PM
#27
MBWorld Fanatic!
Here's a test:
Open Google and search for "brakebook" or any well-known brake manufacturer.
Open the on-line catalogue.
Select any manufacturer at random.
Select any model at random (chose a posh one if you like).
Select any version at random.
Select a brake rotor for that version.
Open the data sheet.
The datasheet will give all the specs for the brakes of that model, and this will include the nominal thickness and the minimum thickness.
See what the difference is!
The point of this is that all cars are the same. Big cars, small cars, fast cars, slow cars, expensive cars, cheap cars, heavy cars, light cars - they all have 2mm difference between nominal and minimum. If there was a need for certain types of cars to have their rotors changed more frequently, then it would be specified. But it's not.
Nick
Open Google and search for "brakebook" or any well-known brake manufacturer.
Open the on-line catalogue.
Select any manufacturer at random.
Select any model at random (chose a posh one if you like).
Select any version at random.
Select a brake rotor for that version.
Open the data sheet.
The datasheet will give all the specs for the brakes of that model, and this will include the nominal thickness and the minimum thickness.
See what the difference is!
The point of this is that all cars are the same. Big cars, small cars, fast cars, slow cars, expensive cars, cheap cars, heavy cars, light cars - they all have 2mm difference between nominal and minimum. If there was a need for certain types of cars to have their rotors changed more frequently, then it would be specified. But it's not.
Nick
Last edited by Welwynnick; 02-10-2017 at 12:56 PM.
02-10-2017, 05:36 PM
#28
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From resident MB tech ItalianJoe, as posted in the W222 forum:
Just to clear that up.
You can almost always put pads on the old rotors at least once, with no real adverse effect. If you have slightly warped rotors though, you will notice it more with the new pads, as they wear in and build up more pad material on the high spots that were already there.
Just to clear that up.
02-10-2017, 08:06 PM
#29
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2015 S550
Yeah....that's a pad slap. If you don't mind squealing and pulsation, it will likely work once. But I don't know of any mechanic who recommends a pad slap without at least cutting the rotors....which isn't possible on these cars since it takes the rotors out of minimum spec.
02-10-2017, 10:23 PM
#30
Yeah....that's a pad slap. If you don't mind squealing and pulsation, it will likely work once. But I don't know of any mechanic who recommends a pad slap without at least cutting the rotors....which isn't possible on these cars since it takes the rotors out of minimum spec.
