I have a 2016 JCW with flaking paint on the rear rear calipers and some chips on it the Brembo fronts.

I used Mini ‘Chilli Red’ paint to touch up the chips on one my my foot Brembos and it’s dried slightly lighter than the OE paint.

Are they in fact a Brembo factory red rather than Chilli red?

Does anyone know the correct paint code is correct for the front and rear JCW calipers and also what primer base colour should I use?

 

There is not a paint code for the calipers. Take your MINI to a local body shop and ask them to paint match it for you, might cost your $40 or $50 but you'll have paint for the future.