Hi everyone. New to the forum and hoping for some assistance. I would like to change my brake pads myself so defaulted to my usual online choices of GSF, Autodoc & Eurocarparts. My car is 2019 2ltr tdi 40 S line. I'd like to buy Brembo pads but in all the online car parts websites even when I put my reg in and match the car to their database, there are different choices. Eurocarparts give me 4 options for Brembo, an ATE system with 318mm discs, TRW with 300mm, Akebono with 350 or Brembo with 338. Am I right in thinking my car has 338mm Brembo caliper? 

Ive tried looking for the answer online but there is nothing definitive. I also tried decoding the options sticker in my handbook but nothing referenced the braking system. Finally I hoped that the Myaudi app would give me the answer but no joy. 

Can anyone help please?

Have you attempted to measure the discs?

Was hoping someone might know before I go to the effort of removing the wheel...... 🙂

Can you see the disc through the wheel? If you can, put a straight edge on one side of the disc & measure to the centre of the wheel, double it and that will give you the diameter.

Good shout that Kev 😀 Will deffo give that a whirl when I get home later. Thanks for seeing beyond my muppetry. 👍

Hello Simon,

As above - if you are going to DIY it, then removing the wheel to ensure you are buying the correct discs shouldn’t be a problem for you. 

Possible alternative:- try LLL website and they should give you the correct part number. 
‘…… defaulted to my usual online choices of GSF, Autodoc, ECP…’

Making a mental note to myself - total disrespect for his wallet! 
GSF sometimes reasonable prices, but often not.

Autodoc - paying extra for postage.

ECP - started life with x% discount on so called retail prices. Now stopped that, and seldom competitive, in my book. 
Still…..

Regards,

Gareth. 

Never heard of LLL..... jsut looking them up now.... thanks for the tip off. 👍

 

Then when you have the correct part number, or have measured the size, do yourself a monetary favour and broaden your supplier bank. 
Regards,

Gareth. 

On 9/9/2025 at 9:44 AM, Leesy69 said:

Hi everyone. New to the forum and hoping for some assistance. I would like to change my brake pads myself so defaulted to my usual online choices of GSF, Autodoc & Eurocarparts. My car is 2019 2ltr tdi 40 S line. I'd like to buy Brembo pads but in all the online car parts websites even when I put my reg in and match the car to their database, there are different choices. Eurocarparts give me 4 options for Brembo, an ATE system with 318mm discs, TRW with 300mm, Akebono with 350 or Brembo with 338. Am I right in thinking my car has 338mm Brembo caliper? 

Ive tried looking for the answer online but there is nothing definitive. I also tried decoding the options sticker in my handbook but nothing referenced the braking system. Finally I hoped that the Myaudi app would give me the answer but no joy. 

Can anyone help please?

https://www.bremboparts.com/europe/en

 

Put your reg into here , hopefully you should get what you need .  youd need to know your Pr number ..  lba , lbe , llg , etc etc ...   

 

The last Brembos I bought , I got from euro car parts .  Best part of £600 but cheaper than dealer prices . 

 

I also like using partsinmotion 

Edited September 16, 2025Sep 16 by Audisq524

Let’s hope Simon updates us on what he is going to do, now that he has had the help he asked for. 
Regards,

Gareth. 

Hi guys. So it has been a right old detective work job as all of the websites (including brembo's own site) offer 3 different options with different sizes of pads/discs. I checked the build sticker in my handbook and put every single code into a website to find out what each option is. The brake codes simply said disc brakes so that was no help. But the breakthrough ('scuse the pun) was I spotted a code on the Brembo site that matched one of my option codes so bit the bullet and ordered. I was a little surprised to receive pads with piston clips on the back as every single video on Youtube shows pads without clips. So that gave me a few more moments of mild panic but Im confident that I've chosen the correct ones from Brembo. I'm only changing pads and hoping to do that this weekend so will update once completed. 

Another possibly daft question if I might ask (its my first time attempting to DIY brakes). I've read that using copperslip is a bad idea on modern brakes as it can interfere with the abs.... My current pads squeal like a banshee - hence changing them and I suspect they were done on the cheap by the supplying used car dealer. Some internet advice is to not use any grease at all and some advise a small amount of brake grease but not copper based. Any advice welcomed.......

Thank you. 

10 minutes ago, Leesy69 said:

Hi guys. So it has been a right old detective work job as all of the websites (including brembo's own site) offer 3 different options with different sizes of pads/discs. I checked the build sticker in my handbook and put every single code into a website to find out what each option is. The brake codes simply said disc brakes so that was no help. But the breakthrough ('scuse the pun) was I spotted a code on the Brembo site that matched one of my option codes so bit the bullet and ordered. I was a little surprised to receive pads with piston clips on the back as every single video on Youtube shows pads without clips. So that gave me a few more moments of mild panic but Im confident that I've chosen the correct ones from Brembo. I'm only changing pads and hoping to do that this weekend so will update once completed. 

Another possibly daft question if I might ask (its my first time attempting to DIY brakes). I've read that using copperslip is a bad idea on modern brakes as it can interfere with the abs.... My current pads squeal like a banshee - hence changing them and I suspect they were done on the cheap by the supplying used car dealer. Some internet advice is to not use any grease at all and some advise a small amount of brake grease but not copper based. Any advice welcomed.......

Thank you. 

Pagid  ceratec at ecp is really cheap ATM .  That's what I'd recommend using .  

Edited September 17, 2025Sep 17 by Audisq524

THanks for the tip will take a look at that. 

 

 

Edited September 17, 2025Sep 17 by Leesy69

I've seen a recommendation for ceramic grease from one our resident experts on the forum whose name I don't remember. 

I've recommended ceramic grease before with red rubber grease under rubber dust sleeve. I'm no expert, but if it's good enough for Dave Sterl (You Tube) then it's good enough for me.

1 hour ago, cliffcoggin said:

I've seen a recommendation for ceramic grease from one our resident experts on the forum whose name I don't remember. 

Thanks Richard. I had a feeling it was either you or Stevey Y, but didn't want to credit the wrong person.