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If you shift into N, the MME will only use the friction brakes. Also, below 10mph, the braking is almost entirely friction but obviously takes a few stops to get enough heat into the rotors to get them dry.
Why would I use the friction brakes? Isn't the goal not to used the friction brakes so as to minimize its wear ... am I missing something here ?
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hawkeye3point1

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Why would I use the friction brakes? Isn't the goal not to used the friction brakes so as to minimize its wear ... am I missing something here ?
To keep rotors and pads in good shape. Corrosion becomes a problem from lack of use. Junk can collect on the pads and cause scoring.

Shifting to Neutral to apply friction occasionally is a neat trick and a new one for me.
 

robbinbadams

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I was surprised at how clean the brake calipers and wheel archers were, after driving more than 10K miles on my RWD Premium 68 kWh MME !!! There was no grease or road grime attached to the calipers and the absence of brake dust was truly amazing .... compared to my Mercedes GLA, the silvery wheels would have turned grayish black at this mileage level; in addition the thickness of the disc pads was like it came out of factory.

rotor Collage(2).JPG
One issue I see is that if you never use the friction brakes the rotor gets rusty. I have seen this on Teslas.
 

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Why would I use the friction brakes? Isn't the goal not to used the friction brakes so as to minimize its wear ... am I missing something here ?
I mainly do this after I wash it. If you park it with the rotors wet, the pads can bond to the rotors due to oxidation. If you're lucky, it just makes a "bang" when they release. I believe that someone here has had to replace the pads and rotors when the pads split instead of releasing.

It is not something you would want to do in normal use.
 
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I mainly do this after I wash it. If you park it with the rotors wet, the pads can bond to the rotors due to oxidation. If you're lucky, it just makes a "bang" when they release. I believe that someone here has had to replace the pads and rotors when the pads split instead of releasing.

It is not something you would want to do in normal use.
I do drive the car after washing it ... it is a pain; and you are correct if I don't drive next time I reverse it ... there is a truly unforgiving harsh noise!
 


backwardsfish

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Most of the dust you’ll get is from clearing the rust from the discs lol.
Im contemplating doing 5k miles rotations Instead. Between regen and acceleration the rear tires on a RWD will wear a lot faster than the front.

YES< I was thinking this same thing for my RWD.
 

Trick.Mach-E

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Our Mach-E and 6200 miles...

Ford Mustang Mach-E 10K miles Tire Rotation & Balancing .... what it looked like IMG_0123
Ford Mustang Mach-E 10K miles Tire Rotation & Balancing .... what it looked like IMG_0124


We did a 3200 mile trip right after the rotation and this is what the front wheels looked like...

Ford Mustang Mach-E 10K miles Tire Rotation & Balancing .... what it looked like IMG_0163


We use 1PD with very little brake applications as well! We are now at 13k and the brake dust is not as bad.. it's time for a rotation so I will do another pic comparison this weekend.
 

will

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I'd like to see some recordings of regen and braking in a RWD. In my AWD the regen is strongly biased to the front motor (even though driving is biased to the rear motor). I'm curious how the RWD handles it.

If someone curious loads up CarScanner, the points to look at on a recording would be Hybrid/EV Battery Power, Vehicle Speed, Vehicle Acceleration and Brake Pressure, with a log showing some normal driving, some 1PD "let off the pedal" slowdowns, and some "rapid slowdowns" using the brake pedal.
This is very interesting... I know a lot of the braking on most vehicles occurs on the front wheels. I wonder if someone just did the sharpie test on the fronts / backs if they would wear differently when applying the brakes.
 
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Here is the link: https://www.macheforum.com/site/threads/mach-e-brake-pressure-data-for-each-drive-mode.11284/

There is a lot in there, but the punchline is that the car strongly prefers regen braking in all driving modes (whisper/engage/unbridled, and 1pd/normal). How it feels changes a bit depending on the mode, but if you tell the vehicle to slow down, it will prefer regen up to around 0.2gs of deceleration (on an AWD at least).

On a normal drive, it is quite possible that the only time the friction brakes engage at all is after you are already stopped (it uses them to hold the car in place when fully stopped). Even at less than 10 mph it will use the regen to bring you to a stop, then hold it with the brakes. I have several datalogs of 1+ hour long drives (through towns, not interstate) where the friction brakes weren't used to slow the vehicle a single time on the entire drive.
Thank you for the most intelligent response so far on my post. I do agree with your logic because I am a conservative driver and during my ultra long road trips (18 hours continuous driving along I-95 all the way from Fl to NJ) I try my best to coast to a stop, so this means that I am using the regen braking on almost 90% on my stoppings ... and it shows how clean my brake calipers are. Thanks again ....
 

Trick.Mach-E

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Our Mach-E and 6200 miles...

Ford Mustang Mach-E 10K miles Tire Rotation & Balancing .... what it looked like IMG_0163
Ford Mustang Mach-E 10K miles Tire Rotation & Balancing .... what it looked like IMG_0163


We did a 3200 mile trip right after the rotation and this is what the front wheels looked like...

Ford Mustang Mach-E 10K miles Tire Rotation & Balancing .... what it looked like IMG_0163


We use 1PD with very little brake applications as well! We are now at 13k and the brake dust is not as bad.. it's time for a rotation so I will do another pic comparison this weekend.
So I did a tire rotation at 13082 miles. It has been 6800 miles since the last rotation and deep wheel cleaning and this is how the front wheels look...

Ford Mustang Mach-E 10K miles Tire Rotation & Balancing .... what it looked like Wheel


Much less brake dust overall. Hopefully as time goes on there will be less brake dust!
 

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I've found German cars to be really good at creating brake dust- even our Mercedes EV was pretty dusty- quite a bit different than any of the other EVS or PHEVs we have owned.
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