MK3.5 FR brake disk size?

[Wilto]

Hi all, looking to change the brakes all round on my 2018 FR 1.4 150bhp.
Can't find anywhere what size I need, I think they are 288mm front and 272mm rear.
I've checked all the PR codes I have, but it doesn't say anything about what brakes are fitted.
Has anyone with the same car got any information what size I need. Thanks in advance.

 

[Matt_anderson]

My 2018 FR st has -

Fronts - 288mm
Rears - 272mm

so you’re probably on the right track

 

[Wilto]

My 2018 FR st has -

Fronts - 288mm
Rears - 272mm

so you’re probably on the right track

Thanks for that Matt

 

[Wilto]

Ok, next question, what brand do you guys recommend for brake disk and pads?
I am almost sure that my current set up is the original set up from the factory, as I've not changed them since buying the car in April 2021 with 23000 miles on the clock.
I've noticed that the rear pads are Delphi not sure about the front.
What manufacturer supplies the OEM disks and pads?

 

[martin j.]

Are you sure you need discs? What miles is on the car? Have you checked the disc thickness? Ours has done 40k and the discs are still fine.

 

[Wilto]

These are the advisories I had on my last MOT

Offside Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
Rear Service brake fluctuating, but not excessively (1.2.1 (e))

When I asked my mechanic who MOT ed it, he said its probably your rear discs that are slightly warped. So I was going to change the rear discs and pads for the second advisory, and the front pads are wearing thin, on the front, so I thought change the disc's at the same time. Get it all done first as last.

 

[eltawater]

I'm on my third set of front brake pads and the last change was only because the slide pin was sticking and caused premature wear on one side.
Check the thickness of your front disc before replacing. I've just changed the front discs on my Cupra at 90 thousand miles...

 

[SuperV8]

Ok, next question, what brand do you guys recommend for brake disk and pads?
I am almost sure that my current set up is the original set up from the factory, as I've not changed them since buying the car in April 2021 with 23000 miles on the clock.
I've noticed that the rear pads are Delphi not sure about the front.
What manufacturer supplies the OEM disks and pads?

Delphi are not the original pads manufacturer.
Strange new rear pads were fitted with less than 23k miles!

There are many different OEM friction lining manufactures - which can change with production year and version. If you find out the OEM lining manufacture

 

[RUM4MO]

I felt the need to replace the rear pads on my daughter's May 2019 Leon Cupra back in November last year at 17,260miles, okay there was 3.5mm of friction material left, but I felt the need to replace them while I was servicing that car's brakes. The front pads are okay and might last until the rears next need replacing - sounds a bit strange, but that is the way it is with that car, and I seem to remember that some other Leon owners have also found the need to replace the rear pads at reasonably low mileages, maybe due in part to "driver aids"?

 

[DEAN0]

I felt the need to replace the rear pads on my daughter's May 2019 Leon Cupra back in November last year at 17,260miles, okay there was 3.5mm of friction material left, but I felt the need to replace them while I was servicing that car's brakes. The front pads are okay and might last until the rears next need replacing - sounds a bit strange, but that is the way it is with that car, and I seem to remember that some other Leon owners have also found the need to replace the rear pads at reasonably low mileages, maybe due in part to "driver aids"?

I wonder if it is also to do with the rear discs corroding more than the fronts and acting like sandpaper on the rear pads.

 

[SuperV8]

I felt the need to replace the rear pads on my daughter's May 2019 Leon Cupra back in November last year at 17,260miles, okay there was 3.5mm of friction material left, but I felt the need to replace them while I was servicing that car's brakes. The front pads are okay and might last until the rears next need replacing - sounds a bit strange, but that is the way it is with that car, and I seem to remember that some other Leon owners have also found the need to replace the rear pads at reasonably low mileages, maybe due in part to "driver aids"?

Ah yes, the rear EPB brake is a Conti brake system - which has many reports of wearing the rear pads early from VAG/Volvo & JLR, I suspect mainly from the pads binding in the carrier but also maybe from an 'over zealous' driver aid.

How much friction material is left on your pads?
If the pads are slightly binding it may well have also worn/caused the DTV (disc thickness variation) which is probably the fluctuating the MOT testing is referring to.

 

[RUM4MO]

I wonder if it is also to do with the rear discs corroding more than the fronts and acting like sandpaper on the rear pads.

Well, it can't be doing the pads or the life of the pads much good. I'd already considered that when this set of rear pads have been "consumed" that I'll change both the discs and pads. I didn't think that my daughter would be too happy if I had suggested that she needed to change both the discs AND the pads seeing as SEAT service workshop did not comment on the condition of the rear discs. I've found in the past that the factory fitted rear discs end up corroded quickly, but aftermarket ones last a lot longer before looking nasty, that is based on my experience with VW cars at least. Though I can't comment on the real world relative effectiveness of one compared with the other.

 

[Wilto]

Thanks guys for your information so far, I'm still not 100% sure what size/ brake system is on my car. Looked up all my PR codes, in the handbook, and the brake PR codes are missing.
Does anyone have access to ETKA? maybe this would give me my brake codes.
My vin number is
VSSZZZ5FZJR107704
Thanks in advance

 

[Wilto]

If someone can get any information from the above I will be extremely grateful

 

[RUM4MO]

If you are really still unsure about which parts to buy, but want to work this out yourself, then why not head down to your nearest SEAT dealership parts department and ask them if they could please print off a copy of "CAR DATA" for your car, it tends to include more assembly build options that are on your car than the sticky build data label has on it.

After you have that info and found out, hopefully which front and rear brake options were fitted at the factory, then you can continue your "deep digging down" by looking on brake parts manufacturer's websites for their aftermarket kit part or stock numbers, then use that to buy from ECP etx.
Maybe a top tip is, check all the info that you have found online against what ECP is handing over to you BEFORE leaving the branch, doing that might save a lot of repeat visits.
Plus remember, as far as my experience has proven GSF and hopefully ECP have access to data bases that glean info from manufacturer's parts listings, so offering your reg number at the front desk should end up with you getting sold the correct parts, as opposed to you trying to select from their lists of "might fit" from their website.

 

[MattN]

I measured my current discs before buying new ones. I used two plastic straps you get on a pack of photocopier paper taped together. Fed it around the circumference of the disc and divided by 3.1415. 100% certain.

 

[RUM4MO]

No pi(es) involved!

 

[MattN]

πo

 

[SuperV8]

Thanks guys for your information so far, I'm still not 100% sure what size/ brake system is on my car. Looked up all my PR codes, in the handbook, and the brake PR codes are missing.
Does anyone have access to ETKA? maybe this would give me my brake codes.
My vin number is
VSSZZZ5FZJR107704
Thanks in advance

For that VIN,
Your front brake is:
TRW 288X25MM PR:1ZE,1ZJ

Rear brake
ATE 272X10MM 5X112 PR:1KE

 

[Wilto]

For that VIN,
Your front brake is:
TRW 288X25MM PR:1ZE,1ZJ

Rear brake
ATE 272X10MM 5X112 PR:1KE

Absolute legend thank you so much.