Brake Pads Thickness
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2016 E350 Sport
Brake Pads Thickness
My front brake pads are at 8 MM and the rears are at 5 MM. Can we assume they'll wear out evenly by the time they're ready to be replaced? I say that due to fronts taking the greatest braking load. I'd like to replace them both at the same time when it's time.
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What would stop you this way, or the other?
Usually the rear pads are smaller and/or having lower thickness to even up the wear, but lot depends on your driving style.
Modern pads last very long time and are cheap enough to not to worry about disposing one end prematurely.
Just check your rotor thickness at the time and compare to min stamped on it.
Rotors can last about 3 pads sets, but they develop lips, who might need some grinding.
Usually the rear pads are smaller and/or having lower thickness to even up the wear, but lot depends on your driving style.
Modern pads last very long time and are cheap enough to not to worry about disposing one end prematurely.
Just check your rotor thickness at the time and compare to min stamped on it.
Rotors can last about 3 pads sets, but they develop lips, who might need some grinding.
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EXTREMELY UNEVEN BRAKES
You really need to drop wheel to inspect individual pads.
Front rotors need to go anyway even they can well be resurfaced... the surface heat treatment hardening is shot so best to replace them.
If you have the multi-piston calipers then pads may wear more evenly.
Also the smart ESP lane keeping advanced features wear wheels differently by axle....
Last edited by CaliBenzDriver; Nov 26, 2024 at 07:09 PM.
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durable brake rotors
things have changed since this that was true...
obviously heat treated 🥱
The hardness of rotors and pads is critically matched to get specific friction, temperature and durability.
Without heat treatment high carbon steel rotors would be too soft... so indeed brake rotors are heat treated as quoted above.
Last edited by CaliBenzDriver; Nov 26, 2024 at 08:51 PM.
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Everything depends on the flavor of cast iron which comes in more than the 31 flavors at Baskin Robbins ice cream.
Also the various heat treatments of said Cast irons:
CastIrons.pdf
My issue is who knows what was specified by MB engineers for rotor material?
Love to see a manufacturing drawing.
Also the various heat treatments of said Cast irons:
CastIrons.pdf
My issue is who knows what was specified by MB engineers for rotor material?
Love to see a manufacturing drawing.
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I stand corrected.
When cast iron treatment is different from steel treatment and they have different goals, seems new technology brought the term to cast iron.
Reading more about it, the treatment removes carbon from cast iron surface.
Found a manufacturer, who claims to be "advanced" rotors manufacturer, who goes opposite way. They put more carbon for better performance
https://shopdixcel.com/products/dixc...e-brake-rotors
For me rotors are like 1/2 millions miles item, so there is no way I will be ever able to compare.
When cast iron treatment is different from steel treatment and they have different goals, seems new technology brought the term to cast iron.
Reading more about it, the treatment removes carbon from cast iron surface.
Found a manufacturer, who claims to be "advanced" rotors manufacturer, who goes opposite way. They put more carbon for better performance
https://shopdixcel.com/products/dixc...e-brake-rotors
For me rotors are like 1/2 millions miles item, so there is no way I will be ever able to compare.
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Besides the OPs question there bunch of poor info in this thread. Cast iron used in the pads is not heat treated like mentioned above, it is case hardened. This is a huge difference. Case hardening like modern crappy files and such is just surface treatment.
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Last edited by CaliBenzDriver; Nov 29, 2024 at 11:59 PM.
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My apologies the rotors not the pads. My mistake. My statement is still standing (once correct word is used), the rotors made of cast iron are not heat treated, they are not a medium or high carbon steel, w1 or w2, L6, or stainless, or any boutique CPM and such. Just like everything else of cast iron, if a hardness is required its either some form of case hardening, special weld buildup, or a top plate is forged onto then that top plate is heat treated like some of the old cast iron bodied anvils.
Last edited by Quint22; Nov 30, 2024 at 10:45 PM.
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Rear pads can wear faster than the front pads where cruise control is in heavy use as they brake from the rear. Follow the Brake Wear warning and don't run them down too low is probably the sensible approach.
If you don't know the history of the car, then resetting the brake system with new pads, wear sensors and rotors all around, as well as new fluid will put you in a good position for the future. The advice about uneven wear noted above shouldn't be dimissed.
If you don't know the history of the car, then resetting the brake system with new pads, wear sensors and rotors all around, as well as new fluid will put you in a good position for the future. The advice about uneven wear noted above shouldn't be dimissed.
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On the other hand, if you know you are going to replace the rotors anyway, then heck, go ahead and run the pads down to the metal. LOL, this is my cheap way of getting the most from my fronts, where I just recently started hearing the wear-indicator squeal, but I'm gonna get new rotors anyway so why not get more free miles. Car has around 122k so I think yeah, pretty dang good!
Edward
Last edited by Edward993; Dec 3, 2024 at 12:05 AM.
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Cruise Control ...ohhh, so that's how the CC works, uses the rears to slow down ...I always wondered about that!
On the other hand, if you know you are going to replace the rotors anyway, then heck, go ahead and run the pads down to the metal. LOL, this is my cheap way of getting the most from my fronts, where I just recently started hearing the wear-indicator squeal, but I'm gonna get new rotors anyway so why not get more free miles. Car has around 122k so I think yeah, pretty dang good!
Edward
On the other hand, if you know you are going to replace the rotors anyway, then heck, go ahead and run the pads down to the metal. LOL, this is my cheap way of getting the most from my fronts, where I just recently started hearing the wear-indicator squeal, but I'm gonna get new rotors anyway so why not get more free miles. Car has around 122k so I think yeah, pretty dang good!
Edward
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How do u check the mm?
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2016 E350 Sport
I was told by dealer when I took it for an oil change, part of the A service. You could also use a digital caliper measuring tool like this one.
https://a.co/d/8PUVm4g
https://a.co/d/8PUVm4g
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Had: 1987 300TD, Had: 2004 C230 Sport Sedan, Have: 2014 E350 Sport, Have: 2019 S450
