I have had brake judder on my L322 TD6 for what seems like ages. Being a FF Blonde Woman I have been told many things...Dealer said "What do you expect, It is a heavy car"! Changed Rotors and Pads all from EB brakes and shipped to Oz. Still have Judder! Got Independent local RR guy to drive it..he confirmed brake judder...AND suggested I got the Rotors skimmed. Had Rotors checked and skimmed..no problems found. What else can I suggest to those knowledgeable males who just keep telling me to get the Rotors skimmed!!!
Thxs

Could be a brake caliper problem. Does it occur with all brake pedal pressure inputs or just light to medium.

Could be worn wishbone suspension bushes

Yep you are right..if I stomp on the brakes it is not obvious...Before I replaced the Rotors the left front Calliper appeared to be out of alignment as the pad wear was not symmetrical. resulted in the pad wearing and sticking without setting the sensor off. Told it was a design fault but I was never sure. I will take to local brake specialist and have them check this out.
Perth such a small place even some LR specialists will not touch my car!
Thanks heaps.

Should I say 190,000 kms, new transmission at 187.000, and only issues were (apart from the Tran) caused by incorrect servicing and crumbs in the ignition! Love my RR and have never regretted my purchase.

OK, I went through this with one of my Jags but the principles are the same for almost all cars.

The easiest way to check if there is run out on the rotors (discs) is with the use of a surface gauge. Any decent Engineering shop will have one along with a magnetic base. All I did was have them mount the base on the suspension strut (firmly attached to the hub - no bushes in between) and check the run-out whilst rotating the disc by hand.

This method absolutely proves if you have run out or not. So, if you do, try the same thing on the disc mounting face on the hub. Although rare, hubs can distort too, and they can also have rust on the mating face which causes the rotor to not sit flat. They can also have worn bearings which will cause a wobble.

On the other hand, if the rotor are running true I would look to suspension joints and bushes.

Thxs mzplcg. I understand what you are saying (just)! It brings to mind an issue my friend had (also a JAG man) getting the front right wheel off. By the looks of it the mechanics who changed the boot had used a lever. It took some time manipulating the car and almost with the wheel nuts off completely to free the wheel. Could this indicate some distortion I wonder. I will quizz the Brake specialists when I go to see if they can handle all of this testing.
Thxs

Ok, back to basics ... warped discs are not the only source of judder. As already said, the smallest bit of crudd can prevent the dics sitting flush on the hub. Seizing propshaft joints can cause judder etc etc.

When do you feel the judder?

- on acceleration
- on cruising at steady speed
- on the fine balance between power and off power (coasting)
- on letting off the gas and letting the car slow of its own accord
- braking gently
- braking moderately
- braking hard

how do you feel the judder?

- through the steering wheel
- through the pedals
- through the seat as though its beneath you

how fast is the judder?

- once per wheel revolution
- quite fast ... faster than the wheels turning V8 or else ...

I had occasional judder when driving (not braking) in my TD6. It turned out to be a sticking/seized rear near side calliper. it is quite common on these models. Quite cheap and quick to replace with basic tools. No longer FF owner but still interested. Present car Jaguar XE
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Previous car Td6 SE
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Previous LR- Disco 300TDi Auto

When do you feel the judder?

- on acceleration NO
- on cruising at steady speed NO
- on the fine balance between power and off power (coasting) NO
- on letting off the gas and letting the car slow of its own accord NO
- braking gently YES
- braking moderately YES
- braking hard SLIGHT

how do you feel the judder?

- through the steering wheel YES
- through the pedals NO
- through the seat as though its beneath you YES PLUS

how fast is the judder?

- once per wheel revolution I BELIEVE SO
- quite fast ... faster than the wheels turning NO..NOT LIKE ABS

Mikeyjd wrote:

I had occasional judder when driving (not braking) in my TD6. It turned out to be a sticking/seized rear near side calliper. it is quite common on these models. Quite cheap and quick to replace with basic tools.

[quote="fisha"]Ok, back to basics ...

Hi Fisha
I may have not replied properly, sorry, would be interested in your thoughts. I have pasted my answers to your questions above.
Thxs