Why do some cars rust?

>living in places where they use road salt while liking cars
You're just asking for it

It depends on the qualtiy and type of metal used. Also the quality of the paintjob.

>>14660717
And also what this guy said >>14660711

Either one or a combination of three things
>car is old
>car is shit
>owner is shit
rust belt residents can fuck off

oxidization of the metals in the car

>>14660683

All cars rust eventually.

>>14661558
The 306 has a galvanised body, iirc.
Can't be the only one.

>>14660683
bad water flow
they have a panel and seal shape that traps water

>>14662738
big sales gimmic for euro cars in the late 80s

>>14662738
>galvanized steel doesn't rust
Even "stainless" will rust.

>>14665512
just that the galv rusts before the steel
then you run out of galv

>>14662738
306s do rust, though very slowly, the undercoating is also very good on them

>>14665512
you can get ornamental stainless grades that form a protective layer of rust then last forever.
can't remember what they are called but it has a specific name

>>14660683
just to piss you off

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>>14660711
>tfw when living in Mishitgan where everything gets salted to death.
>tfw just want a decent shitbox that isn't rusting through the floor.
This state is shit incarnate, I swear.

>>14665512
eh just make it out of inch think, everything will be dead before its structualy weak enough to cause any concern

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>>14660683
Rust is love, rust is life.

>>14665512
What about aluminium, didn't it became actualy stronger when it rusted because it added extra layers on it. I remember something like that in chemistry class and that's why one side of aluminium paper is opaque and the other not.

>>14660683
When a mommy oxygen and a daddy iron love each other very much...

>>14665775
>I remember something like that in chemistry class

Aluminum oxide is very hard, so it becomes a protective layer. Rust flakes off and constantly exposes more metal to oxidation. Magnetite, iron (II,III) oxide, is also very strong and unreactive, but can only form in specific conditions.

>that's why one side of aluminium paper is opaque and the other not.

This is due to the rolling methods, not the chemical properties.

>>14665775
Aluminum doesn't stand flexing stress like steel does so if it's poorly engineered you could literally end up with your car cracking in half if you hit a bump on the highway after 150-200k miles.

>>14665775
aluminium gets really really brittle and flaky after a while

>>14665664
move to washington
>mild weather all year
>no road salt except for the 1 day a year it snows

>>14665775
when you start looking at the material properties of steel you realise it's the god material

>>14665809
Las Vegas here
>literally never snows. Hasn't snowed since like 2008
>rarely rains
>270 miles from the ocean

I can't remember ever seeing a rusted car in the 14 years I've lived here. We also have gambling and hookers and legal public drinking. Get rekt Washington faggot

>>14665842
any place where it routinely gets above 80f is garbage

>>14665842
I mean that's nice but fuck no. I can't stand being sweaty every day and god forbid my AC would ever go out. Cool coastal climate a best. West coast especially, because when you want snow to play around in there are mountains right nearby
>throwing your money away
>being desperate enough to spend money on disgusting literal whores
>being surrounded by drunks and tourists all the time
I think I'll be fine without any of that thanks

>>14665887
only issue with washington is the road system is designed for a traffic load 20 years ago, so driving around the seattle area is just fucked from 3-6
and if you want to go to an island? get bent

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>>14660683
Road salt, sea side and dirt roads cause ALL cars to rust.

But you gotta understand: cars dont get hot dip galvanized. They get electro plated.

Hot dipping is like soldering on molten zinc. But that zinc is at 407 degrees C. Often higher. That anneals steel and warps the shit out of panels. The upside to this is that zinc penetrates into the steel and will protect it.

Electro galvanizing is like painting the steel in a thin layer of zinc. No penetration. Thus the quality of cleaning the steel before plating, the solvent used and even the FRESHNESS of the solvent become critical.

Also, some 90's models are just plain steel and paint...

>>14665775
aluminium corrodes, which is a lot worse.

Too much cum landed on the car.

>>14660683
Shit owner + salty roads

Poor or no galvanizing
Salty roads
Wet climate
Damaged paint

>tfw Scotland
>tfw perfect storm of rust

People thinking 'galvanzied' means something. Long term, it will make little to no difference.

>>14665847
>80f
>hot
Do you live in Antarctica? 80 degrees is nice. 95 and over is when it starts getting too hot

>>14665775
Aluminum is aluminum

>>14660683

My uncle use to make money buying old accords and toyotas that were rust free in GA and selling them in new jersey and ny.

>>14668358
no I live in washington
80f is disgusting, I prefer 60-70f

>>14668395
Southern cars sell for so much more in upstate ny