Brake Disc Size and Tuning Box??

[Charlie23]

Hi Guys and Gals, recently bought a 2013 A5 3.0 tdi Quattro and im Looking for some new front discs but I keep coming across 3 different sizes? 314, 320 & 345? Does anyone know which ones by anychance?
I have also been looking at the TDI tuning boxes has anyone any experience with these?
Thank you

 

[EXSpartan36]

Hi Guys and Gals, recently bought a 2013 A5 3.0 tdi Quattro and im Looking for some new front discs but I keep coming across 3 different sizes? 314, 320 & 345? Does anyone know which ones by anychance?
I have also been looking at the TDI tuning boxes has anyone any experience with these?
Thank you

There should be a sticker in your spare wheel well with your VIN number and all the PR codes for your Car. one of those codes will relate to your disc size.

I've got a TDI-tuning box on my 2.0TDI quattro. It done nothing for my MPG but the extra power is amazing.