I know the L405 suffers from warping discs, I wondered if anyone has managed to find a set of replacement drilled 2 piece floating discs as a direct replacement?

I had some made for my Audi S8 as it had 6 piston brembo calipers from the factory much like the L405 4.4 SDV8 and SCV8...

Any plug and play options out there?

First I've heard of warping discs being a particular issue......

Are you suffering or just looking at a proactive upgrade ?

where did you hear about warped discs on the L405 Charles? ... - .- -.




Y. O. L. O.
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Main dealer told me it's a common issue... so I did some reading and the L405 and L494 sharing the same brembo set up suffer this issue supposedly..

https://www.pistonheads.com/gassing/topic....;t=1512564

It seems that after 1 or 2 spirited drives or heavy towing they are practically toast.... on the later 2016> they bolted on larger cooling ducts behind the disc that stick out of the back of the wheel like a scoop and they direct air to the disc.

I am looking for these for 2 reasons, prevent warping and also help with cooling as the drilled ones will allow more air to flow through them

You will struggle to find 2 piece discs

If you need the extra cooling, drilled and grooved are available

cooling has nothing to do with keeping the brakes from warping, it has to do with mitigating performance loss under heavy use. They also don't technically warp! If the brake is warped, it is just cut uneven from use. You can have the rotor turned or replace. Your rotors will almost certainly be uneven if you do a brake job and only swap out pads. You should have your rotors turned or replaced every time pads are swapped. If you're getting uneven wear that quickly, something is up with your brakes.

There is also no need for drilled or fancy rotors on a car like this, blanks are just fine. If you are getting drilled make sure you're getting them with that features cast into the rotor VS milled out later as that seriously compromises the integrity of the part. Tho drilled rotors are to allow gasses to escape during heavy use which isn't a thing anymore so at this point it's more a style thing. Plus since they're drilled out you're removing mass from the rotor which maybe the holes help cool, but since you've reduced total mass the cooling difference is probably null. Basically, cross drilled rotors aren't better, they're just introducing unnecessary complexity.

Slotted rotors aren't for cooling either, the slots just drag across the pad and remove any contamination/dust/etc.

In summation, just get blanks, good pads and make sure whoever is doing your brake job knows how to carry it out properly. Ill also add junk pads can wear out and leave material on the surface of the rotor creating an imbalance, you can avoid that simply by buying good pads.

The PistonHeads thread seemed to be just 1 or 2 people and talking more about L494's than L405's.....

I'm a reasonable spirited driver, even whilst towing and not had any issues so far......

Thank you all for the detailed replys

In all honesty I have never replaced the rotors/discs on my car only pads. I will order all new discs and replace.

I have used EBC red and yellow pads on this car for quite some time, in a bid to reduce the brake dust.

I will switch everything back to genuine land rover and see how it goes

I've only ever used genuine on my L405

On various L322's I tried different combinations & everything was worse, nosier or dustier or warped - so on the advice of others (mainly Craig) reverted to genuine & was happy.

a link to start you of/
https://www.carid.com/performance-brake-ro...#prod-list 2012 TDV8 Black Edition
2000 Disco. TD5
1975 series III

its my understanding that brake discs rarely warp. the problem is uneven transfer of brake material onto the disk which results in a 'warped disk' feeling afterwards and the bigger the disk diameter the greater the liklehood of this happening.

in automatics this is often caused by holding the car stationary on the brakes when he disks are very hot.

if you think about it, the disk gets equally hot all over at the same rate and should cool down equally and it doesn't ever get as hot as it was when it was cast so why would it subsequently suffer heat based distortion?

https://alconkits.com/technical-info/brake...rake-discs

Discs can also become warped if, when changing wheels, tightening torque is not respected!

Charles89 wrote:

Thank you all for the detailed replys

In all honesty I have never replaced the rotors/discs on my car only pads. I will order all new discs and replace.

I have used EBC red and yellow pads on this car for quite some time, in a bid to reduce the brake dust.

I will switch everything back to genuine land rover and see how it goes

L405's have a habit of throwing the lower front arm bushes! This will/can give you the appearance/feel of warped disks believe it or not! Its basically the wheel/suspension moving backwards and forwards causing the feeling of warped discs!

Also, cheap pads will also give you a warped disc feel as they overheat/harden!