New car rotors - hub rusting

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#2009626 7-May-2018 21:33

@Batman - Just for clarity, the photo that you put up - is that the rear rotor, the one that didn't get replaced? Or is the front rotor that did get replaced?

Edit: Just re-read the OP - IMO for a "new" rotor it certainly looks very well used...

Longevity wise, it's certainly not going to last as long as a proper brand new rotor (and it likely to chew on brake pads too with that pitting).

Having said that, on the rear it should be quite so bad, assuming your brake balance puts the load on the front and you don't tend to use the ebrake to slow the vehicle down too much ...

hsvhel

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#2009627 7-May-2018 21:38

wazzageek:

jaymz:

Just paint 'em bro

Disclaimer:

DON'T paint them like that ^ you'll end up ruining the brakes and having to replace parts.

I *really* hope that our WOF would fail brakes like that ...

I once had a lady turn up to the workshop with a poorly running and severely smoking engine. She had just sold the car and was dropping it off, thought she would top up the oil for the new owner.......it was up to the rocker cover. Local Z station did it for her.....and we undid it....hot oil and a free job for a poor lady, moral: you'd be surprised what people do.

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Coil

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#2009684 8-May-2018 07:50

hsvhel:

wazzageek:

jaymz:

Just paint 'em bro

Disclaimer:

DON'T paint them like that ^ you'll end up ruining the brakes and having to replace parts.

I *really* hope that our WOF would fail brakes like that ...

I once had a lady turn up to the workshop with a poorly running and severely smoking engine. She had just sold the car and was dropping it off, thought she would top up the oil for the new owner.......it was up to the rocker cover. Local Z station did it for her.....and we undid it....hot oil and a free job for a poor lady, moral: you'd be surprised what people do.

I got a snapchat from a mechanic mate two days ago of this exact issue lol.
My mate also did this to his diesel last night, told him to stop and i'll come drain it on the side of the road but didn't have a bar of it (So why call me for help dumbarse). And yup, it hydraulic'd a piston through the block after 5 more KM LOL!

Batman

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#2009704 8-May-2018 09:13

wazzageek:

@Batman - Just for clarity, the photo that you put up - is that the rear rotor, the one that didn't get replaced? Or is the front rotor that did get replaced?

Edit: Just re-read the OP - IMO for a "new" rotor it certainly looks very well used...

Longevity wise, it's certainly not going to last as long as a proper brand new rotor (and it likely to chew on brake pads too with that pitting).

Having said that, on the rear it should be quite so bad, assuming your brake balance puts the load on the front and you don't tend to use the ebrake to slow the vehicle down too much ...

1. rear rotor, new rotor.

2. i ran my hands along the rotor, it is 100% (according to my fingers) flat, no lumps bumps lips indentations, lines etc

3. the front rotors (also as new) does have a few lines like a vinyl record

Fred99

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#2009727 8-May-2018 09:38

Batman:

2. i ran my hands along the rotor, it is 100% (according to my fingers) flat, no lumps bumps lips indentations, lines etc

Well if that's the case, we've been deceived by some optical illusion or whatever, because in the photo of the rear disk you posted - it looked terrible.

FireEngine

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#2009729 8-May-2018 09:40

Coil:

I got a snapchat from a mechanic mate two days ago of this exact issue lol.
My mate also did this to his diesel last night, told him to stop and i'll come drain it on the side of the road but didn't have a bar of it (So why call me for help dumbarse). And yup, it hydraulic'd a piston through the block after 5 more KM LOL!

Ouch!

Regards FireEngine

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Batman

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#2009739 8-May-2018 09:49

Fred99:

Batman:

2. i ran my hands along the rotor, it is 100% (according to my fingers) flat, no lumps bumps lips indentations, lines etc

Well if that's the case, we've been deceived by some optical illusion or whatever, because in the photo of the rear disk you posted - it looked terrible.

Ran my hands along both rear rotors, one of which was pictured in the optical illusion of the decade. Completely smooth.

hsvhel

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#2009742 8-May-2018 09:52

Batman:

Fred99:

Batman:

2. i ran my hands along the rotor, it is 100% (according to my fingers) flat, no lumps bumps lips indentations, lines etc

Well if that's the case, we've been deceived by some optical illusion or whatever, because in the photo of the rear disk you posted - it looked terrible.

Ran my hands along both rear rotors, one of which was pictured in the optical illusion of the decade. Completely smooth.

You win the internet for photography illusion, i would have guessed that melt like the moon. If its flat, it will be OK.

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Batman

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#2009747 8-May-2018 09:54

hsvhel:

Batman:

Fred99:

Batman:

2. i ran my hands along the rotor, it is 100% (according to my fingers) flat, no lumps bumps lips indentations, lines etc

Well if that's the case, we've been deceived by some optical illusion or whatever, because in the photo of the rear disk you posted - it looked terrible.

Ran my hands along both rear rotors, one of which was pictured in the optical illusion of the decade. Completely smooth.

You win the internet for photography illusion, i would have guessed that melt like the moon. If its flat, it will be OK.

Someone did a photoshop to it. It wasn't the original picture. go back in the thread and see who photoshopped it. Mind you as a purist I would say that the iphone probably had to do some adjustments to produce my original picture, as it looks like a high contrast situation (which any time when the sun is out is a high contrast situation for image sensors - they are very different from the retina in your eyes. I took the photograph to show the rust. the rotors happened to be there, and i don't know what the phone did to the rotors, I didn't really care. But my fingers tell me they're ok.

hsvhel

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#2009748 8-May-2018 09:54

Coil:

hsvhel:

wazzageek:

jaymz:

Just paint 'em bro

Disclaimer:

DON'T paint them like that ^ you'll end up ruining the brakes and having to replace parts.

I *really* hope that our WOF would fail brakes like that ...

I once had a lady turn up to the workshop with a poorly running and severely smoking engine. She had just sold the car and was dropping it off, thought she would top up the oil for the new owner.......it was up to the rocker cover. Local Z station did it for her.....and we undid it....hot oil and a free job for a poor lady, moral: you'd be surprised what people do.

I got a snapchat from a mechanic mate two days ago of this exact issue lol.
My mate also did this to his diesel last night, told him to stop and i'll come drain it on the side of the road but didn't have a bar of it (So why call me for help dumbarse). And yup, it hydraulic'd a piston through the block after 5 more KM LOL!

Hole in the wallet too.....

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MikeB4

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#2009762 8-May-2018 10:04

I remember having this discussion with my father (motor engineer) it is normal no need to worry about it and it's gone 2 seconds after you start driving. Any bare iron in a wet environment and add to that the chemicals coating our roads is going to get surface oxidation and quite quickly. We have two cars, one is one year and the other is four weeks old both will get this surface rust overnight if I cant be bothered putting them in the garage. If they go into the garage wet it will also occur. By the time we reach teh end of our drive they are all clean.

Here is a crazy notion, lets give peace a chance.

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Coil

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#2009768 8-May-2018 10:08

hsvhel:

Coil:

hsvhel:

wazzageek:

jaymz:

Just paint 'em bro

Disclaimer:

DON'T paint them like that ^ you'll end up ruining the brakes and having to replace parts.

I *really* hope that our WOF would fail brakes like that ...

I once had a lady turn up to the workshop with a poorly running and severely smoking engine. She had just sold the car and was dropping it off, thought she would top up the oil for the new owner.......it was up to the rocker cover. Local Z station did it for her.....and we undid it....hot oil and a free job for a poor lady, moral: you'd be surprised what people do.

I got a snapchat from a mechanic mate two days ago of this exact issue lol.
My mate also did this to his diesel last night, told him to stop and i'll come drain it on the side of the road but didn't have a bar of it (So why call me for help dumbarse). And yup, it hydraulic'd a piston through the block after 5 more KM LOL!

Hole in the wallet too.....

Oh ya and the Ego, There is a lil ol highly spoken TimA chanting "I FRKN TOLD YA SO BOIIIIIII"

Fred99

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#2009863 8-May-2018 12:03

Can't see much rust on the wear surface of these rotors.

That photo from the internet - but there's a brake shop in Chch (Safe R Brakes IIRC) where they've got a large collection of similar and worse pulled from customer's cars, on display in their front office/customer service area. Most brake workshops will have seen similar.

Batman

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#2009902 8-May-2018 12:39

Fred99:
Can't see much rust on the wear surface of these rotors.

That photo from the internet - but there's a brake shop in Chch (Safe R Brakes IIRC) where they've got a large collection of similar and worse pulled from customer's cars, on display in their front office/customer service area. Most brake workshops will have seen similar.

Needs new pads.

Bung

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#2009911 8-May-2018 12:48

The weta discs get the rustier they are.

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