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Thread: Coated / plated rotors vs bare rotors

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    Administrator Daox's Avatar
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    Coated / plated rotors vs bare rotors

    I am doing the front brakes on my 2014 Mirage very soon. When I go on Rock Auto, they show that there are Coated (I assume they are zinc plated) rotors for improved rust protection. Do any of you have experience with these type of rotors? I would love to hear how well they work.


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    Senior Member Cobrajet's Avatar
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    Quote Originally Posted by Daox View Post
    I am doing the front brakes on my 2014 Mirage very soon. When I go on Rock Auto, they show that there are Coated (I assume they are zinc plated) rotors for improved rust protection. Do any of you have experience with these type of rotors? I would love to hear how well they work.
    I put Raybestos rotors on when I replaced the pads last time. They offered two grades of rotors, and I chose the higher grade. My logic at the time was that even the higher grade was significantly cheaper than OEM. Mine appear to be coated, and have not rusted. However, the stock ones I took off hadn't rusted, either! Rust isn't a huge problem around here.

    The stock ones mic'd out okay, but one side had a slight warp/pulse. I will have to check my records, but I think I did them at about 90k?

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    Senior Member Fummins's Avatar
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    Myself, I just buy the cheapo uncoated rotors and decent pads. There are some places where I don't see the point of paying extra for something. Coated rotors are one of those things. Premium gas and unobtaium spark plugs are some others.
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    Senior Member Top_Fuel's Avatar
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    I have zinc-plated rotors on my wife's daily-driver Eclipse. They did well for a couple of years but they eventually rusted like normal rotors. If I ever get those rotors again, I'm still going to go ahead and paint them for extra protection. If they only cost a few dollars more, I would definitely get zinc-plated rotors.

    I painted my OEM rotors and calipers when my car was new. Here's what they looked like after 50,000 miles of daily driving...

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    I know they look a little rusty, but some of that brown color is brake dust. If they start rusting, I will toss them in a bucket of Evapo-Rust overnight and paint them the next day. I'm a bit OCD about that kind of thing because you can see my rotors and calipers through my wheels...so I have to keep them somewhat presentable.

    Be sure to price brake components here, too: https://brakeperformance.com/
    Last edited by Top_Fuel; 07-12-2019 at 07:25 PM.

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        click to view fuel log View my fuel log 2015 Mirage ES 1.2 manual: 51.4 mpg (US) ... 21.9 km/L ... 4.6 L/100 km ... 61.8 mpg (Imp)


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    Senior Member Fummins's Avatar
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    412k Km on these Name:  B0327322-6799-4D67-BF27-5A5DB80B91E9.jpg
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Size:  89.9 KBName:  3D2DE5C2-4CE1-40F6-B1A3-AE0F3236AE57.jpg
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Size:  93.0 KB They're practically like new.
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    Senior Member Top_Fuel's Avatar
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    Quote Originally Posted by Fummins View Post
    412k Km on these
    The surfaces don't look that bad for that kind of mileage. If you tossed them in some Evapo-Rust overnight, all the rust on them would disappear. Then again, the entire rotor may disappear.

    Do you guys even bother resurfacing them? I haven't cut a rotor in years. They are just too cheap to buy new.

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        click to view fuel log View my fuel log 2015 Mirage ES 1.2 manual: 51.4 mpg (US) ... 21.9 km/L ... 4.6 L/100 km ... 61.8 mpg (Imp)


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    Senior Member Fummins's Avatar
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    I've got an pretty old lathe that I don't know the history on. I'm convinced the arbor is off center. The few time's I've used it weren't very successful.
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    Senior Member Cobrajet's Avatar
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    No matter which rotors you get, Daox, I will make one suggestion given your locale. Put a little grease or anti-seize compound around your hub after you take the old rotor off. Or, after you fight the old rotor off!

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    Administrator Daox's Avatar
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    Here is why I ended up going with the coated rotors... I'm not sure if these are original rotors or not, but they're not in that great of shape.

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    Custom Mirage products: Cruise control kit, Glove box light, MAF sensor housing, Rear sway bar, Upper grill block

    Current project: DIY Nitrous oxide setup for ~$100

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage DE 1.2 manual: 45.4 mpg (US) ... 19.3 km/L ... 5.2 L/100 km ... 54.6 mpg (Imp)


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    Senior Member Fummins's Avatar
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    How many whacks from a bfh did that take to get off? Looks pretty dry around the hub. There's always time for lube.


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