msmokey3

i brought my max into my mechanic the other day to get an oil leak fixed and asked him why my car might be making a loud vibration noise around 50 mph. he checked out my car and said it was becasue my rotors are rusted. so does this mean that there is nothing i can do about it? it doesnt do it all the time but is very annoying and sounds like ****.

ZuMBLe

iTrader: (1)

Do a few 70-20 stops. Keep the brake pedal firm while doing these stops. Don't lock up the wheels though. That will burn off the rust.

JMAXIMA

i think a better way would be just to take off your wheels and get some med. grit (300) sandpaper to take off the rust and glaze. and you might want to do the same to your pads too. i try to do this once and a while and it makes a nice improvement. and while you've got your wheel off, use some brake cleaner to get all the crap out of your brake assembly.

rmb

A loud vibration when you brake at 50mph? If not, then it has nothing to do with your rotors. All rotors rust, they're cast iron, it's what they do. I'd find another mechanic...

-RMB

ZuMBLe

iTrader: (1)

I can think of one reason you don't want to take sandpaper to your rotors and pads. You mess up the bedding between the two. You may end up with loud scraping sounds when braking.

JMAXIMA

i've done this for years and have never had a problem. and many dealerships do this to for "quick" brake jobs. instead of turning your rotors b/c of glazing, it is actually better to scuff them up a bit. and when your pads and or rotors become glazed, you can have some problems... and sandpaper is a simple/cheap way of doing so. and the only way you would get some noise from doing this is if you didn't clean everything afterwards.

msmokey3

yeh at about 50 mph+ i get this noise without braking but it gets a little louder when i do brake until i slow down to around 30. it started out only making this noise when i was in a slow roll in reverse.