Brake Issues

[Chosen1]

Hi to all,

Finally, just got my v35 250gt last thursday. I've been observing it for a week now, so far it's all good. There's just this one thing bothers me about my breaks. The car vibrates a little bit whenever I slightly step on the break pedal to slow down coming off from 80-100 kph.

Is this normal? Anyone had the same experience before? Am I just making a big deal out of it? Coz the car drives awesome and the breaks are working really well, except only for that little vibrate thing that I'm worried about.

Any suggestions and recommendations of what to do would be big help for me. Thanks!

[pv35gt8]

Your best bet might be that the rotors are slightly warped, get it in to your mechanic/brake specialist and see if they can be machined or a new set of rotors.

[fcruz3r]

+1 on warped rotors.

shouldnt cost u much to get them machined, but if there's not much meat left on the rotors u might need to change them out.

[mosoto]

before you shell out your hard earned chasing the worst case scenario, consider giving them a light skim with some wet and dry then a clean with brake cleaner. You may find some pad resin has been left on the disk surface from poor braking habits. This happens when the foot is left on the pedal when the brakes are very hot. If this doesn't cure it then they may need a machine skim. There are plenty of mobile brake mechanics that can do this without removing the disks.

[FlyingEL]

Me too have a vibrating brake before on a 4WD, and I found out there's a hair line crack on it. Have to change the whole disc. I was told maybe the crack was due to sudden cooling of the disc. Like after a heavy use, car was send to a car wash where the water jet cooled the disc too fast.

[blk94r33]

+1 for a rotor issue, (most likely warped), as it's the only issue (other than an ABS fault) that will cause vibrations under braking. Does it get worse when the brakes are hot?

[Chosen1]

+1 for a rotor issue, (most likely warped), as it's the only issue (other than an ABS fault) that will cause vibrations under braking. Does it get worse when the brakes are hot?

Not really, it only vibrates for 1 to 2 seconds if I slightly step on the break pedal and only if I'm driving a bit fast.

I'm thinking if this is a serious problem, I might bring it back to the car yard I bought it from and get it fixed.. Can I still hold them responsible for any problems with the car? Since it's only been with me for a week now and because they told me that it's been complianced so I don't have to worry about anything. Is that possible?

[blk94r33]

It came with a warranty yeah? Depends on how good the dealer is, as a rotor problem (if that's the case) could be dismissed as normal wear and tear. Only 1-2 seconds? Does it then go away completely or just become really faint?

[Chosen1]

I think it does come with a warranty. Well, it should be.. It doesn't get any worse after those few seconds. It's hardly noticeable tho. But I better get it fixed before it cause me bigger problems in the future.. I'll ring up the car yard tomorrow. Thanks guys for the help. cheers.