Excessive Rust? video inside

[BRZnut]

Looking under the car from the rear, I noticed that where every bolt is attached to the rear wheels , the metal is covered in rust. Even the exhaust system is showing rust. Check our 3 year old Honda CRV and no rust at all.

Car is garaged kept and was never driven in snow. Can others take a look under their BRZ/FRS and see if yours looks the same? What do you think??

[ame="http://youtu.be/HQHwkK0zWt4"]http://youtu.be/HQHwkK0zWt4[/ame]

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[Khazzy]

I will look later. Pretty sure mine is the same way but went through a winter in Nebraska. They treat their roads a little different here though.

[Kimsey47]

Just replaced my exhaust with a catback and had no rust at all on the exhaust. Didn't pay attention to the suspension area you are showing in your video; however, I'm sure I'd probably noticed that amount of rusting had it been there. Will check later today.

Also, just for the record my BRZ is garage kept & driven year round; however, we haven't had any snow in TN since I got it. I have noticed treated roads though but I believe the solution we use here isn't too rough on vehicles.

[Kimsey47]

Originally Posted by BRZnut

Looking under the car from the rear, I noticed that where every bolt is attached to the rear wheels , the metal is covered in rust. Even the exhaust system is showing rust. Check our 3 year old Honda CRV and no rust at all.

Car is garaged kept and was never driven in snow. Can others take a look under their BRZ/FRS and see if yours looks the same? What do you think??

Checked mine just now... Not a single speck of rust at all. I'd definitely be bringing this to the attention of your local Subaru dealer to see what they have to say.

[Suberman]

Looks like surface corrosion from exposure to salty water. The exhaust system looks OK to me, spots of rust are normal on aluminized steel exhaust and means nothing. The painted suspension parts should not be rusty yet although the rust will not harm the car given how sturdy those pressings have to be. Might be worth a warranty claim as those parts could be treated with anti corrosion chemical and then re-painted with corrosion resistant flexible epoxy. Those suspension components look powder coated which is pretty durable.

Depends where you live though. If you drive in winter anywhere it snows it is going to get rusty underneath. Generally speaking those heavy steel pressings aren't going to be weakened by that kind of surface rust. Garaging your car doesn't help much and then only if your garage is bone dry for most of the winter. Warmth in the garage and moisture or humidity will actually cause more rusting than if you parked outside in the cold. It's a chemical thing. Rust needs oxygen and liquid water to form a corrosive solution. Remove either component and the steel won't rust. The other technique is a sacrificial anode (zincs on boats) which is provided by the aluminum on aluminized exhausts and by zinc/phosphorous primer and galvanizing on steel panels and pressings. Then the underbody and internal cavities are sealed against water and air by flexible epoxy undercoating and waxy anti corrosion sealants.

[Wes]

I have rust at the suspension area too, the same for a friend of mine, not sure if normal. kinda sucks as mine is garaged as well

[Young_makaveli]

Thats why doing a rustproof is a good idea

[BRZnut]

Thanks for the input..may have the dealer look at it, or just hit it with some rustolium spray and keep an eye on it. Hate to take it to the dealer since I'm sure they will say its normal.

[Young_makaveli]

I think they'll fix the rust for you

Its under warranty right? 5 years rust corrosion warranty ?

[BRZnut]

Correct me if I am wrong, but I think the rust warrantee is if rust eats all the way through a body panel or other part.

[Suberman]

Originally Posted by BRZnut

Correct me if I am wrong, but I think the rust warrantee is if rust eats all the way through a body panel or other part.

Correct, an anti perforation warranty. However, manufacturers will assess early rusting and sometimes elect to remedy it early. For suspension though they will not since it is a cosmetic issue.

[Hanakuso]

I'm not really worried about those 3-4 bolts since I replace them pretty frequent. In the shop manual it mentions to replace most of those everytime you unbolt them.

I noticed the undercarriage bolt has some rust. I live in Socal and garage kept...

[Young_makaveli]

Well I just got my frs a few days ago and I think Ill rust prof it right before the snow and salt hits the ground!

[charged86]

those are just the machined faces of the steel mounting areas. if you want remove the parts bolted to them and sand down or use 3m brown color scuff pad on a drill or angle grinder and use paint or just coat area with anti-seize youll be gtg