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edit, because people continue to miss the point - this is not about the rust present on the hub. It's about the water, which sure has the side effect of causing rust but who cares about some surface rust on a brake component, why is water staying there?
... one of the rears seems to have been holding water in the hub area.
Bizarre. The other rear was dry, as were the fronts. The spacer on this hub had a solid ring of rust residue, whereas the other side didn't, indicating that this side in particular is far less sealed than the other.
What do y'all make of this? Gonna be doing my 60k in a couple weeks and will be taking things a bit more apart for inspection.
... one of the rears seems to have been holding water in the hub area.
Bizarre. The other rear was dry, as were the fronts. The spacer on this hub had a solid ring of rust residue, whereas the other side didn't, indicating that this side in particular is far less sealed than the other.
What do y'all make of this? Gonna be doing my 60k in a couple weeks and will be taking things a bit more apart for inspection.
I think it is very common. My 2017 991.2 C4S shows the same thing when wheels are removed. My tire installer removed some of the rust with a wire brush and applied a little grease/never seize on the brushed hub wheel guides. BTW...my car only has 13-14k miles on it.
I think it is very common. My 2017 991.2 C4S shows the same thing when wheels are removed. My tire installer removed some of the rust with a wire brush and applied a little grease/never seize on the brushed hub wheel guides. BTW...my car only has 13-14k miles on it.
What's weird though is it's only this one corner doing this on my '17.
I understand. It think it may be all 4 of my hubs, but pretty certain the guy who owned the car before me drove through the car wash as the inside lip of both rear wheels were all scraped up until I had them professionally fixed and powder-coated. Not sure why they rust so easily, but suspect it is from harsh wheel cleaning solutions or road salt. I bought my car with 7,400 miles on it last June and only hand wash it with very gentle soaps, and avoid car washes/driving in sloppy conditions. With that said, I think it is only surface rust and not dangerous.
Yeah, I'm not worried about the rust or anything like that. This is a daily, year-round, in Minnesota. It's just odd to me that only one wheel captures water like this.
What's weird though is it's only this one corner doing this on my '17.
Which rear has the rust...passenger’s side? That is what I’d imagine to be the case as the center caps have 2 holes to remove them...AND...let water in. The right side probably gets more wet on the partially wet edge of drying roads and the rears kind of stick out further thereby getting more moisture sprayed onto them, or at least that’s how my C4S seems to be after driving on a semi-wet road (i.e. day after rain storm or early Spring). Anyway, it is kind of odd that Porsche does not account for that possibility.
Which rear has the rust...passenger’s side? That is what I’d imagine to be the case as the center caps have 2 holes to remove them...AND...let water in. The right side probably gets more wet on the partially wet edge of drying roads and the rears kind of stick out further thereby getting more moisture sprayed onto them, or at least that’s how my C4S seems to be after driving on a semi-wet road (i.e. day after rain storm or early Spring). Anyway, it is kind of odd that Porsche does not account for that possibility.
Nope, driver's side!
Forgot about the holes in the center caps. Maybe I'm looking at this all wrong -- ingress is normal, it's the egress that's problematic!
Originally Posted by tgavem
Agree, looks like crap. Not sure why Porsche can use different material or coat them.
Not sure I'd be willing to pay the premium for having axle threads made of a material that can handle those torque values whilst resisting corrosion, personally.
Originally Posted by fpb111
YOU TAKE YOUR CAR OUT OF THE GARAGE?? Great Merciful Heavens! It might DISSOLVE!?!!?
Whoa whoa, pump the brakes. I'm supposed to leave it in my garage? I have definitely missed this memo.
It's fine and normal, just surface rust. If it really bothers you, take a wire brush to it with some rust remover. Then just shoot it with some high temp clear.
You don't need a ton of water in there to create rust, it's the water with the heat of the brakes/engine that make happen quickly.
It's fine and normal, just surface rust. If it really bothers you, take a wire brush to it with some rust remover. Then just shoot it with some high temp clear.
You don't need a ton of water in there to create rust, it's the water with the heat of the brakes/engine that make happen quickly.
The weird thing isn't the rust. I live in Minnesota, I'm well acquainted. It's the fact that just one corner was holding water. I'd expect all of them or none of them. What's special about the left rear?
The weird thing isn't the rust. I live in Minnesota, I'm well acquainted. It's the fact that just one corner was holding water. I'd expect all of them or none of them. What's special about the left rear?
I'm guessing that the other 3 will catch up soon enough.
I'm guessing that the other 3 will catch up soon enough.
Catch up to.. holding water...?
Again, this isn't about the rust.
Just in case people miss it again, this isn't about the rust.
It's about the water that, for whatever reason, got in there and stayed in there, instead of not getting in there in the first place or not evacuating itself after getting in there.
Water is retained because you wash your car and do not drive it right after to allow the centrifugal force to expel water from the hub. Do you use a power washer? If so, try using the hose's pressure instead.
The hub/wheel cannot be sealed from water infiltration.
I believe that Porsche automobiles can be safely driven in - horrors of horrors - rain and even....snow. They even equip them with little rubber thingies that push water off that glass thing that connects the roof with the frunk.
Then again, you should remove all wheels after water exposure and dry with cashmere cloths.
Steel rusts and what you are seeing is surface rust. Sure, Porsche could make these babies out of titanium - in fact the whole car could be made out of Ti and cost as much as a nuclear submarine.
04-18-2021, 01:43 PM
Changing to my summer wheels and...
