I ordered a pair of brake rotors - Part # JLM21749 and upon opening the package I noticed everything looked correct except the existing rotors have additional holes drilled between the lug bolt holes. I also see what appear to be Torx bolts in two of the holes. To add further complication there is no reference to these additional bolts or holes in my JTIS. I have attached images for reference.


Anyone have a clue of what is up with this? I have contacted the supplier via e-mail but it is Saturday and I am sure I won't hear back until Monday. I am in no rush as this is a " I may as well as" project related to replacing my power steering rack, but I trust this board more than anything else. I thought it would be straight forward but is anything anymore?

 

Treat this suggestion with caution as it's based on photos from various aftermarket brake specialist sites I've viewed today trying to find a Hawk Ceramic pad supplier in the UK:

The photo of your existing disc with the five additional holes looks like Part No C2N3428 fitted from VIN A41033. The replacement looks to be Part No JLM21749 for vehicles up to VIN A41032.

Graham

 

Thanks Graham!
After further investigation it appears the correct part is C2N3427, but thanks for getting me on the correct path. C2N3428 = non cross drilled rotors but still Brembo compatible; I didn't know they made them without cross drilling but I think I just saw it noted in the other thread you started about the soft pedal feel. - FYI I have been using Hawk HPS and have been very pleased, a bit more dust than the ceramics, but nothing like the stock and they have great stopping power, once they are warmed up.

Re: the rotors - They listed the part as applicable and I provided the VIN too. We will see what the vendor says.

 

Marc;

May I ask how much the drilled Brembo rotor's cost?

Any idea if they will fit an '04 XKR?

Are the flaming Red calipers original?

Surprising number of changes from '04 to '06 on the "R's"

cheers,

jj

 

For the 4.2 cars, I thought Red or Grey calipers was just a different finish for the same item but this is not the case. The Red ones are listed at higher cost and presumably therefore, higher specification / performance.

REAR:
XKR: either Red or Grey caliper with cross-drilled or non cross-drilled disc
XK8: Grey only with cross-drilled or non cross-drilled disc
In all applications, the disc is 330mm

FRONT:
XKR: either Red or Grey caliper with cross-drilled or non cross-drilled disc
XK8: Grey only with cross-drilled or non cross-drilled disc
Disc can be either 305mm or 355mm

Haven't been able to confirm the application for the front disc alternatives but it seems likely the larger diameter is XKR only?

Aftermarket discs (both cross-drilled and non cross drilled to OE specification are available at a fraction of the cost of Jaguar.

Whilst searching for my current XK8, I came across an XKR with cross-drilled on the front and non cross-drilled on the rear and thought this was unlikely to have been the original factory build.

Graham

 

Thanks G;

So has anyone seen drilled rotors with Grey Brembo calipers or are the drilled rotors only part of the upgrade with the red calipers.

cheers,

jj

 

jj,

UK retail for Brembo JLM 21749 and C2N3427 discs is £525.55. (the US price is terrifying!)

I've found a possible UK source in Kent for aftermarket discs at around a third of this.

GGG

 

YES - about 60 feet away as I'm typing this.



GGG

 

Sweet!

Oh my god is that price for one rotor/disc?????

I won't be using mine at all if that is the case.

Am very easy on brakes and have only once or twice ever had to replace rotors.

Thanks for the info.

cheers,

jj

 

Rock auto has the rotors for $79 plus shipping. They work great.

 

Can't understand why the original Brembo discs are so expensive. We have a RRS and there the original Brembo's 380mm (so even more material) are around 100 euros.


There are indeed cheaper alternatives now, for the US buyers; Stoptech/Centrix offer the fronts (120.20020) for about $220 and rears about the same. www.britishparts.co.uk offers some at 245 euros, not sure if these are original ones or what brand though.


My current front set lasts now already for 70Kmiles, and think another 20 or so will be possible. I think the Hawk ceramics may have aided the longer lasting discs, as my previous set (which I had given a cryogenic treatment, but doubt the effects with the high quality brembo) lasted about 75 Kmiles with a mixture of pads (original Bad Stuff, and Hawk ceramics).

 

avos,

Where did you source Hawk Ceramics in Europe?

I can find plenty of suppliers in the US but the shipping cost to UK will be extremely high.

Graham

 

I think that's just an assumption.

I'll make one of my own... that the silver ones were purchased in bulk so Jaguar has them at an OEM price and the red ones are retail units so you have to pay the upcharge to get the retail color.

 

Markets vary so what's made available in the UK isn't necessarily so in the US and vice versa. Here some models came fitted with red and others with grey:



The EPC lists both colours. Anyone going for a replacement would want it to match the other three.

 

@GGG
Haven't looked anymore here in the EU for the last couple of years, and always bought them in the US. The last time from eBay, where they where kind enough to mark it as a gift ;-).

 

Over here it's listed as an option, which would be noted on the window sticker. If it's not on the sticker and you have them, they've been changed out or painted by a 3rd party.

As for being higher performance, sure, why not. They're red, they must be better.

 

G, G, G,

Everything is either Red or Grey for you isn't it.


Attachment 16627

"The EPC lists both colours. Anyone going for a replacement would want it to match the other three."

What does it mean to list Red and Grey for the 4.2 Supercharged and right below it say "Except for 4.2 Supercharged" and only list Grey?

Does anyone speak 'Jaguar' that can translate that contradiction?

Think how crazy we could drive some forum members, well actually all of them, by painting just one caliper on their cars a different color.

Or you could have red on one side and grey/green on the other to go with whatever the wife/husband is wearing that day. After all you can only ever see one side at a time.

Cabin fever is getting a little high here after being snowed in for over a week.

jj

 

jj,

The answer is in an earlier post. There's no difference whatsoever.

The first owner of my car paid an additional £1800 just for a different colour -



- and the Scots are supposed to be careful with their money!

 

G;

Ouch!!

That is a huge 'style' premium.

Isn't that same cost as the BBS wheels were as an option.

I had seen your earlier post but was confused by the way the language was used in the attachment and wondered if that was supposed to mean that only the Grey Brembo's were original?

As for the Scot's, the only team I can root against in the six Nations Rugby tournament, this might through some light on their attitude to money:

A young Scottish lad and lass were sitting on a low stone wall, holding hands, gazing out over the loch. For several minutes they sat silently.
Then finally the girl looked at the boy and said, "A penny for your thoughts, Angus."
"Well, uh, I was thinkin'...perhaps it's aboot time for a wee kiss."
The girl blushed, then leaned over and kissed him lightly on the cheek.
Then he blushed. The two turned once again to gaze out over the loch.
Minutes passed and the girl spoke again. "Another penny for your thoughts, Angus." "Well, uh, I was thinkin' perhaps it's noo time aboot time for a wee cuddle."
The girl blushed, then leaned over and cuddled him for a few seconds.
Then he blushed. Then the two turned once again to gaze out over the loch.
After a while, she again said, "Another penny for your thoughts, Angus."
"Well, uh, I was thinkin' perhaps it's aboot time you let me put my hand
on your leg."
The girl blushed, then took his hand and put it on her knee. Then he blushed. The the two turned once again to gaze out over the lock before the girl spoke again.
"Another penny for your thoughts, Angus."
The young man glanced down with a furled brow. "Well,noo," he said, "my thoughts are a wee bit more serious this time."
"Really?" said the lass in a whisper, filled with anticipation.
"Aye," said the lad, nodding.
The girl looked away in shyness, began to blush, and bit her lip in anticipation of the ultimate request.
Then he said, "Dae ye nae think it's aboot time ye paid me the first
three pennies?"

cheers,

jj

 

JJ would a Swiss Joke be a bit more raunchy

Al