I have stock non-brembos. I Was just playing about and had to slow down at a decent rate from going fairly fast. The next time I had to stop I notices a loud deep vibration sound from the rear of the car (nothing from the front, the steering wheel didn't vibrate at all, so maybe I am lucky there?). As I kept driving, it got better, but didn't go away 100%, only feel it when braking from higher speeds. Will they straighten out after cooling down, or driving on them after a while, or is there NO hope, and they need to be replaced??

ANY HELP IS APPRECIATED!!!

 

btw, is there anyway to tell if it is one side or the other, or both rotors???

 

i warped mine the first week I got them...haha Have them checked out at a shop, not the dealer. You could be able to machine them and you should be fine

 

It is not that usual to warp rotors, you really have to work them hard and then keep the brakes applied holding the heat in one spot to warp them.

What susually happens is that you get uneven brake pad material deposited on the rotor causing the vibration, some places sell a material similar to sanding paper that you can place between the pad and rotor and make a hard stop and see if it removes the material.

 

I looked and do NOT see anything on the rotors, so I don't think that is it.

As for the machine shop, I have a friend that I can buy his for cheap, so I bet it is less to just replace them and go on my way.

 

Hey, look at it like this, It's a good excuse to upgrade your rotors!

 

It really depends on how you drive actually.

I warped the rotors on the last two cars I owned. Of course though I have a lead foot

when It came time to get the Z I knew I had to get the Track model!.

Also think about the fact that Rod H has Bigger wheels. They may not be heavier than OEM but the increased overall diameter says that the brakes have to work harder to stop the car. This means they get hotter which means of course you are more likely to warp your rotors!

If you drive like me then pick up some Brembos or Rotoras! itll cost you but itll save you alot of aggrivation in the future

 

Take a look at this:

http://www.stoptech.com/whitepapers/...otors_myth.htm

It sounds pretty doubtful that you have actually warped your rotors (I guarantee you the guy who wrote this article knows more about brakes than all the people on this site put together.) That's not a slam on anyone here, but not many folks can match up to THE Carroll Smith.

It's more likely that you've got pad desposition (which is not always visbile) or maybe even that you've burned one of your pads down to the backing plate. Either of those would give the symptoms that you describe.

I would take the car to a shop and have them look at the rotors. It could be that they need to be turned, and possibly that you also need new pads.

Good luck!

Gary

 

I don't know how you drive but visially it is not that easy to see if yo have build up it doesn't take much to mess with the feel, plus you can't see the inside surface since it is covered by the shield.

From the track events I learned that the inside pad takes a beating due to the shield actually acts to hold the heat in and the pad gets distorted and wears quicker, so I woud also go with new pads and bed them in properly and you will be ready to go.

 

very very interesting, thank you so much. This just might be the answer!!!

As I went to work tis-morning, I noticed it did it much less (I only work 3 miles away) and as I came home, I could bearly replicate it, and am now wondering it the brake pad material is perhaps rubbing off. The difference between now and when I first did it yesterday is amazing. Yesterday, I could bearly touch the brake without the whole car shaking like crazy, tonight, I get up to 85mph and brake at a pretty good rate and could bearly feel it (although it is there slightly). Remember, I have less than 15 miles on the car since it happened.