Seat leon fr mk3.5 brake upgrade

[Dodo07]

I'd like to enlarge the brake discs on my 2020 Seat Leon FR 1.5 TSI MK3.5. I'd like to change the OEM 288 front and 253 rear discs to 312 front and 272 rear discs. Can I purchase these directly, or is there anything else I need to do? Can anyone with information on this matter help me?

 

[Bahnstormer_vRS]

You'll need new brackets for the calipers, to reposition them for the larger discs, plus of course the discs.

Everything you need ought to be available from the VAG parts bin.

I did a similar conversation some years ago on a Skoda Yeti replacing 288mm front discs with 312mm ones listed for the Octavia vRS.

Guy

Sent from my Galaxy S25 Ultra using Tapatalk

 

[Dodo07]

What are the part codes of the caliper brackets I need or which ones are used in which vehicles?

 

[Bahnstormer_vRS]

Sorry; no idea on that.

I don't have access to the relevant information.

Guy

Sent from my Galaxy S25 Ultra using Tapatalk

 

[Glosphil]

Remember that the braking efficiency of the car altimately depends on how well the tyres grip the road. No point fitting larger brakes if the tyres have low grip.

The other day I walked past an A3 1.5 TSi with obviously not standard enormous brakes but with cheap tyres with what looked like just about legal tread depth. At least it looked good, but I wouldn't want to drive it on a wet road.

 

[Dodo07]

Aracın frenleme verimliliğinin büyük ölçüde lastiklerin yola ne kadar iyi tutunduğuna bağlı olduğunu unutmayın. Lastiklerin yol tutuşu düşükse, daha büyük frenler takmanın bir anlamı yoktur.

Geçen gün, standart devasa frenlere sahip olmayan, ancak diş derinliği neredeyse yasal olan ucuz lastiklere sahip bir A3 1.5 TSi'nin yanından geçtim. En azından iyi görünüyordu, ama ıslak yolda kullanmak istemezdim.

Remember that the braking efficiency of the car altimately depends on how well the tyres grip the road. No point fitting larger brakes if the tyres have low grip.

The other day I walked past an A3 1.5 TSi with obviously not standard enormous brakes but with cheap tyres with what looked like just about legal tread depth. At least it looked good, but I wouldn't want to drive it on a wet road.

I agree with you on this one. Without good tires, everything else is meaningless. I have no problems with my tires. I installed Continental Premium Contact 7 a few months ago. I really like my brakes, but I know they could be better, so I want to see how far I can go without changing my calipers.

 

[Walone]

I agree with you on this one. Without good tires, everything else is meaningless. I have no problems with my tires. I installed Continental Premium Contact 7 a few months ago. I really like my brakes, but I know they could be better, so I want to see how far I can go without changing my calipers.

I'm fairly sure that if you get bigger discs you will also need different calipers, as the pads will need to be bigger, as well as needing the carriers.

 

[Dodo07]

I'm fairly sure that if you get bigger discs you will also need different calipers, as the pads will need to be bigger, as well as needing the carriers.

In such a case, I would only buy Brembo discs and pads, then if the calipers need to be changed, I won't bother. ))

 

[Bahnstormer_vRS]

I'm fairly sure that if you get bigger discs you will also need different calipers, as the pads will need to be bigger, as well as needing the carriers.

That's not necessarily so. If I may expand on my earlier comment;-

In January 2011 I took delivery of a Skoda Yeti Elegance 2.0L TDI 140 4x4 DSG that I'd ordered some eight months earlier (delivery time dictated by availability of the DSG).

Having previously had an Octavia vRS TDI remapped to c. 220PS that had 312mm front discs, and knowing that I would be remapping the Yeti too, I wanted to replace the OEM 288mm front discs and get 312mm front discs (and uprated pads) on that.

Discussing this with the Service & Parts dept at my dealer, it transpired that the 312mm discs (from the Octavia vRS) would readily fit the Yeti with alternate caliper carriers to reposition the existing OEM calipers & pads. There was no need to change the brake pads (for size) although I did this for upgraded performance.

Icing on the cake, was that my dealer was prepared to supply and fit the 312mm discs and new carriers as part of the PDI.

@Dodo07 - I hope this helps and good luck with your project.


Guy

 

[Dodo07]

Şimdi anladım, bilgi için teşekkür ederim.

 

[SuperV8]

I'd like to enlarge the brake discs on my 2020 Seat Leon FR 1.5 TSI MK3.5. I'd like to change the OEM 288 front and 253 rear discs to 312 front and 272 rear discs. Can I purchase these directly, or is there anything else I need to do? Can anyone with information on this matter help me?

Caliper brackets for front 312 disc:
5Q0615125A left
5Q0615126A right

For the rear - are you sure you have the small 253 disc?
I thought a 2020 would have an EPB, which I thought were using the 272 disc?
If you share your VIN I can check.

If you change your brake disc sizes, you should also code the ABS module - so your car 'knows' it has different brakes, and will adjust ABS & TCS etc..

 

[Dodo07]

Caliper brackets for front 312 disc:
5Q0615125A left
5Q0615126A right

For the rear - are you sure you have the small 253 disc?
I thought a 2020 would have an EPB, which I thought were using the 272 disc?
If you share your VIN I can check.

If you change your brake disc sizes, you should also code the ABS module - so your car 'knows' it has different brakes, and will adjust ABS & TCS etc..

This is my VIN
VSSZZZ5FZLR110613
Yes, my vehicle has EPB. Do vehicles with this use 272 as the rear disc? By the way, how do I code the ABS when I increase the disc diameter?

 

[SuperV8]

This is my VIN
VSSZZZ5FZLR110613
Yes, my vehicle has EPB. Do vehicles with this use 272 as the rear disc? By the way, how do I code the ABS when I increase the disc diameter?

As I suspected - with your EPB you already have the 272 rear disc:

5Q0615601D Brake disc 272X10

To code the brakes you need a diagnostic tool like VCDS or equivalent.

 

[Frostybear]

Just to jump on the bandwagon, @SuperV8 could you check my disc sizes? I have EPB in my mk3.5 1.6tdi ST, VIN is VSSZZZ5FZKR120000

If you already have 288 size fronts, is going to 312 fronts going to make much of a visual difference? 14mm diameter difference isn't much.
Might do it when the time comes for new discs, since it's pretty easy.

 

[Bahnstormer_vRS]

^^^^ Surely the switch to 312mm is for performance, not looks? :-k. :-k

Guy

Sent from my Galaxy S25 Ultra using Tapatalk

 

[SuperV8]

Just to jump on the bandwagon, @SuperV8 could you check my disc sizes? I have EPB in my mk3.5 1.6tdi ST, VIN is VSSZZZ5FZKR120000

If you already have 288 size fronts, is going to 312 fronts going to make much of a visual difference? 14mm diameter difference isn't much.
Might do it when the time comes for new discs, since it's pretty easy.

Yes, you have 288 front discs, and 272 rear.
FYI - its 24mm more diameter (nearly an inch in old money!) - 12mm more radius

 

[Frostybear]

Yes, you have 288 front discs, and 272 rear.
FYI - its 24mm more diameter (nearly an inch in old money!) - 12mm more radius

Not my best maths, but not my worst either! Thanks for that

 

[Dodo07]

Tahmin ettiğiniz gibi - EPB'nizle birlikte zaten 272 arka diskiniz var:

5Q0615601D Fren diski 272X10

Frenleri yazmak için VCDS veya benzeri bir teşhis cihazına ihtiyacınız vardır.

As I suspected - with your EPB you already have the 272 rear disc:

5Q0615601D Brake disc 272X10

To code the brakes you need a diagnostic tool like VCDS or equivalent.

By the way, there are 2 different discs on the Brembo website: 272 x 10 48 height and 272 x 10 58 height. Which ones are compatible with my vehicle? And if I enlarge the discs, can't I use the ABS module without coding?

 

[SuperV8]

By the way, there are 2 different discs on the Brembo website: 272 x 10 48 height and 272 x 10 58 height. Which ones are compatible with my vehicle? And if I enlarge the discs, can't I use the ABS module without coding?

5Q0615601D = 48mm high.

I'm sure people have fitted the larger disc and not coded the vehicle. The hydraulic part will work fine, you'll still have brakes - just the electronic part (ABS/Traction) won't be optimised. The ABS module is expecting a certain range of values from known parameters like friction coefficient, brake pressure and brake torque, and changing the disc diameter effects this - just as fitting high friction coefficient racing pads would do.
Even my old Audi B6 had brake module coding which I did when I fitted the larger front and rear discs.

 

[Dodo07]

5Q0615601D = 48mm high.

I'm sure people have fitted the larger disc and not coded the vehicle. The hydraulic part will work fine, you'll still have brakes - just the electronic part (ABS/Traction) won't be optimised. The ABS module is expecting a certain range of values from known parameters like friction coefficient, brake pressure and brake torque, and changing the disc diameter effects this - just as fitting high friction coefficient racing pads would do.
Even my old Audi B6 had brake module coding which I did when I fitted the larger front and rear discs.

I understand, thank you very much for your help, my friend. I will probably only buy Brembo pads and discs. I can't be bothered with increasing the disc diameter. ))