Hello, I have a FORD FOCUS MK3.5 Titanium X (2015) 1.0 EcoBoost (92 kW / 125 hp).

I'm looking for a pair of front disks to fit before it's MoT next month. The issue I am having is I'm being shown 278mm and 300mm diameters. I've gone and measured from using a straight edge up against the disk to the centre of the alloy and it's measuring at approx 135mm then doubling to approx 270mm. Now I am assuming because that measurement is closest to 278mm, that should be the size I need.
I've been googling and checking other websites and they are always giving me the two options but I found a PDF that may be exactly what I needed. On page 10 there is a mention of brakes with sizes. I will add the PDF and a screenshot.

So I would just like to double check before making a purchase so I don't have to deal with returns. 🙏

FordFocus_TechSpecs_EU.pdf

As your list says, Only STs and a few others had 300mm (and TVM probably put 278s on those too!)

They're 278👍

4 hours ago, DaveT70 said:

As your list says, Only STs and a few others had 300mm (and TVM probably put 278s on those too!)

They're 278👍

Great thank you for the reply.

See an overview of the Focus MK3/MK3.5 brake sizes below:


Front:

1.0 ECOboost = 278 mm discs.
1.5 ECOboost = 300 mm discs.
1.5 TDCI = 278 mm discs.
1.6 TI-VCT = 278 mm discs.
1.6 ECOboost = 300 mm discs.
1.6 TDCI = 278 mm discs.
2.0 TDCI = 300 mm discs.
ST 2.0 TDCI = 320 mm discs.
ST 2.0 TDCI with performance pack = 335 mm discs.
ST 2.0 ECOboost = 320 mm discs.
ST 2.0 ECOboost with performance pack = 335 mm discs.
RS 2.3 ECOboost = 350 mm discs.


Rear:

1.0 ECOboost = 271 mm discs (or drums for a very limited number of markets).
1.5 ECOboost = 271 mm discs.
1.5 TDCI = 271 mm discs (or drums for a very limited number of markets).
1.6 TI-VCT = 271 mm discs (or drums for a very limited number of markets).
1.6 ECOboost = 271 mm discs.
1.6 TDCI = 271 mm discs (or drums for a very limited number of markets).
2.0 TDCI = 271 mm discs.
ST 2.0 TDCI = 271 mm discs.
ST 2.0 TDCI with performance pack = 271 mm discs.
ST 2.0 ECOboost = 271 mm discs.
ST 2.0 ECOboost with performance pack = 271 mm discs.
RS 2.3 ECOboost = 302 mm discs.