I've been living with brake judder for a good six years now and it's killing me. The chassis and some body panels are pretty much the onlys thing I haven't replaced on my G yet and I don't think that would solve the issue.

I went from OEM, to slotted DBA's to freaking AP Racing 6 piston kit and my fckin brakes still judder. Had the pads replaced and rotors resurfaced earlier, was fine for a few hundred km's then this **** started happening again under heavy braking. I read somewhere it could be rust on the mounting surface or wheel bearings but I'm not buying that since the car drives perfectly fine under no braking (no vibrations what so ever). Unbalanced rotating assemblies would cause judder on and off the brakes wouldn't they?

Someone enlighten me please. Should I just go ahead and replace my bearings and wheel studs? lol

 

When I had brake judder and it was endless, so I discovered that it was the pads that were causing the brake judder for me. I replaced the pads to a different manufacturer and the brake judder is completely gone. Next thing I would check is if everything was installed properly as in all the pins and stuff went in properly. Hope that helps and if I can think of something else ill let you know.

 

Thanks for the tip. Could the pads be too aggressive (too much bite?) but it's weird for them to chew up my rotors in a few hundred kms.

 

You might need to rebuild your calipers...

 

I'm on 6 piston AP Racing calipers! Read my first post lol

 

There may be pad deposit on the rotors which causes the brake judder. If you are an aggressive driver and do alot of braking then you need an aggressive pad if not try going to something less aggressive. This is from my experience. I was using stop tech pads on DBA rotors and after 8k miles the judder slowly came back. I switched to hawk Street 5.0 and have them almost 6k miles and there is no evidence of pad deposit. Hope this helps. I would say post pictures of the rotors maybe a visual inspection can help figure out what is wrong.

 

What sort of servicing have you done with your brakes?

If the corrosion gets bad enough between the wheel hub and rotor you can experience juddering when braking. Also in the event you remove your rotors and don't place it back on the hub the same way you took it off that can also induce a judder. I've ran into the problem several times on customer vehicles (not Infiniti's) and 9 times out of 10 this was the general fix. Now this may not be your case but it is definitely something to check for.

If you have access to an angle die grinder and some scotch-brite roloc pads give the hub and rotors a quick clean and see if you still have a judder. On top of that you could also just give the pads a quick sanding.

Is it possible where you got your rotors resurfaced they may have taken off too much?

 

Sam, given that this has happened now with totally different calipers. pads, and rotors, I would humbly suggest that you consider that YOU may be the common denominator here.

I see you are in Dubai, so I assume it gets plenty hot there. If you are not diligently practicing the habit of lifting off the brakes as you roll to a stop, then you will undoubtedly get excessive pad transfer every time you leave your foot on the brake while the rotor comes to a complete stop, which can quickly lead to judder. Unfortunately, these cars are heavy pigs and the brakes heat up quite easily, so it is all too easy to do, especially if you are under hot conditions.

Making a habit of shifting into neutral at stops and using the E-brake slightly if you have to keep the car from rolling will go a long way toward avoiding pad transfer. It sounds annoying, but you quickly get used to it so it's really no biggie.

.02

 

somehow your brake judder problems are spreading like a virus, after 3 years of no brake judder now mine has started lol!!

 

Great reply,I've had that happen numerous times when driving/braking hard and fail to let off the brakes when at a stop, and sure enough judder rears its' ugly head. Real bad if I happen to come in from a hard drive and stop in my garage w/ a bit too much foot on the brake, the next morning it will judder like a mudder I've gotten in the habit of doing anything BUT keep my foot on the brake when I'm stopped after hard braking, it works

 

I have the same issue, the rotors look fine though. Hopefully when I replace the rotors it will be gone.

 

I'll pay attention to my driving habits now that you've mentioned that, doubt it's me riding the brakes though, roads here are 95% level and I never find the need to hold the brakes, even after some heavy driving I never engage the handbrake to park.

 

I can't seem shake this brake shudder. I've replaced my brake rotors and pads twice now. Both times I've indexed my rotors and gotten them within .001 or slightly over. The brakes are fairly smooth for a few thousand miles then I slowly get the brake shudder back. I'm at the point that you can feel the car shake pretty good when you press the brakes at high speeds.

When I jack up the car and manually spin the front tires they always stop in the same spot. I have to manually push them past the tight spot. I assume this is where the rotors are slightly out causing the shudder. Both front wheels exhibit the same behavior.

Normally I would think bad hub, but both hubs? And both of them going around the same time? When I indexed them without the rotors they were within .0005 or so. Could there be anything else in the braking system that could cause the brakes to leave extra deposits on the rotors? Maybe the brake booster isn't working correctly and causing the caliper to drag, etc... I'd hate to just throw on two new hubs, rotors/pads and have the problem come right back.

Thanks in advance for the help!

 

Properly bedding your rotors will eliminate brake judder. I had dealer replace my rotors and pads 4 times under TSB. I then read on the forum about bedding in the brakes. No judder at all since following the bedding procedure.

 

I am convinced drastic measures are needed to fix the brakes ...I put new Stoptech street performance pads and centric rotors on my 2011xS about 5k miles ago and while it's better than stock was I still get judder at speeds above 80 mph ....I have been contemplating upgrading ot the stock sport brake setup.