GTS centre lock nut weirdness
#1
Advanced
Thread Starter
GTS centre lock nut weirdness
Hello all. My GTS's centre lock nuts have discoloured a weird, mottled white-grey. See picture below. It's very noticeable against the black rims, and distinctly unattractive. I have been enjoying the car on track, and wonder if the wheels getting hot have led to this? However I can't imagine they're meant to discolour like that regardless of track use. Any thoughts?
#3
Hello all. My GTS's centre lock nuts have discoloured a weird, mottled white-grey. See picture below. It's very noticeable against the black rims, and distinctly unattractive. I have been enjoying the car on track, and wonder if the wheels getting hot have led to this? However I can't imagine they're meant to discolour like that regardless of track use. Any thoughts?
#4
Banned
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#5
Banned
Is the picture representative of all 4 wheels? If so you probably have a corrosion/oxidization issue from wheel cleaning chemicals or some road chemicals you came in contact with. Based on your location it could have been the moist air or salt water on coastal drives. Either way I bet you could get those replaced under warrantee. That would drive me insane.
#6
Burning Brakes
Happened to mine, having cleaned them only with products supplied by Porsche. They were replaced, but then it happened again (although not as badly). Then I heard somewhere to wipe them with olive oil and, um, it seems to work. Do that about every other time I clean the car and no problems.
Another centre-lock question though: what are people's level of expectation about scuff marks on the lock nuts following removal for tyre changes? Just had MPSSes put on, which are great, but has removed the anodisation in a couple of places. Will post pics next time I clean the car so can be seen clearly.
Another centre-lock question though: what are people's level of expectation about scuff marks on the lock nuts following removal for tyre changes? Just had MPSSes put on, which are great, but has removed the anodisation in a couple of places. Will post pics next time I clean the car so can be seen clearly.
#7
Drifting
The following is from my GTS owners manual:
Rim Cleaner
Using rim cleaners:
Rim cleaners can bleach the anodized surface of
the central bolt. f Only use rim cleaners approved by Porsche
and use these sparingly and in accordance
with instructions for use.
I never use anything but soap and water to clean my wheels for this reason. I had CL wheels on my 2012 997 GTS that I had for almost 4 years, and on my current 2015 991 GTS. CL center lock nuts look like new.
The following is also in the owners manual under alloy wheel cleaning:
Use only cleaners for alloy wheels
(pH value 9.5). Products with the wrong
pH value can destroy the protective layer
on the wheels.
Rim Cleaner
Using rim cleaners:
Rim cleaners can bleach the anodized surface of
the central bolt. f Only use rim cleaners approved by Porsche
and use these sparingly and in accordance
with instructions for use.
I never use anything but soap and water to clean my wheels for this reason. I had CL wheels on my 2012 997 GTS that I had for almost 4 years, and on my current 2015 991 GTS. CL center lock nuts look like new.
The following is also in the owners manual under alloy wheel cleaning:
Use only cleaners for alloy wheels
(pH value 9.5). Products with the wrong
pH value can destroy the protective layer
on the wheels.
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#9
Rennlist Member
Happened to mine, having cleaned them only with products supplied by Porsche. They were replaced, but then it happened again (although not as badly). Then I heard somewhere to wipe them with olive oil and, um, it seems to work. Do that about every other time I clean the car and no problems.
Another centre-lock question though: what are people's level of expectation about scuff marks on the lock nuts following removal for tyre changes? Just had MPSSes put on, which are great, but has removed the anodisation in a couple of places. Will post pics next time I clean the car so can be seen clearly.
Another centre-lock question though: what are people's level of expectation about scuff marks on the lock nuts following removal for tyre changes? Just had MPSSes put on, which are great, but has removed the anodisation in a couple of places. Will post pics next time I clean the car so can be seen clearly.
#10
Nordschleife Master
In which case, a black Sharpie is your best friend . . . .
#11
Burning Brakes
And yes! Mrs Rat loves Sharpies and has massive stash of the things. Will pillage...
#12
For the record, when touching up the light tooling marks, a sharpie will turn out purple. It's just enough to be noticable.
If you use a touch up pen like this, it drys perfectly black.
http://shop.brownells.com/gunsmith-t...FZOCfgodSx4CYg
You can buy them from most gun stores or sporting goods.
If you use a touch up pen like this, it drys perfectly black.
http://shop.brownells.com/gunsmith-t...FZOCfgodSx4CYg
You can buy them from most gun stores or sporting goods.
#13
It is not. It's the wheel cleaner you or your detail shop are using.
This is the check-mark response. 100% what you are seeing.
Head, meet nail.
The following is from my GTS owners manual:
Rim Cleaner
Using rim cleaners:
Rim cleaners can bleach the anodized surface of
the central bolt. f Only use rim cleaners approved by Porsche
and use these sparingly and in accordance
with instructions for use.
I never use anything but soap and water to clean my wheels for this reason. I had CL wheels on my 2012 997 GTS that I had for almost 4 years, and on my current 2015 991 GTS. CL center lock nuts look like new.
The following is also in the owners manual under alloy wheel cleaning:
Use only cleaners for alloy wheels
(pH value 9.5). Products with the wrong
pH value can destroy the protective layer
on the wheels.
Rim Cleaner
Using rim cleaners:
Rim cleaners can bleach the anodized surface of
the central bolt. f Only use rim cleaners approved by Porsche
and use these sparingly and in accordance
with instructions for use.
I never use anything but soap and water to clean my wheels for this reason. I had CL wheels on my 2012 997 GTS that I had for almost 4 years, and on my current 2015 991 GTS. CL center lock nuts look like new.
The following is also in the owners manual under alloy wheel cleaning:
Use only cleaners for alloy wheels
(pH value 9.5). Products with the wrong
pH value can destroy the protective layer
on the wheels.
Head, meet nail.
#14
Banned
GTS centre lock nut weirdness
I'm not convinced. If the CL nut is the same material as the wheel than it shouldn't happen. I can see it happening if you live on a coastal area and the salt air gets to the aluminum but if the nut is affected and not the wheels than I would attribute that to a defective in workmanship.
Last edited by jimbo1111; 07-07-2016 at 12:31 AM.
#15
Drifting
Originally Posted by jimbo1111
I'm not convinced. If the CL nut is the same material as the wheel than it shouldn't happen. I can see it happening if you live on a coastal area and the salt air gets to the aluminum but if the nut is affected and not the wheels than I would attribute that to a defective in workmanship.