Tyre pressure

[dinkydoo]

Hi, first time user so please be patient.
I have just purchased a 2008 Audi A6 saloon 2 ltr
TDI S-Line
It has only done 6800 miles and the tyres that are on are :-
245/40 R18 97Y ZR
The problem is when you look inside the fuel filler cap it DOES NOT mention this tyre and when I spoke to Audi they appeared to struggle to give me an answer as to what tyre pressure I need to use - anyone got a clue?

[ellaguru2u]

I had a similar problem and Audi were useless. I resolved it by looking here:http://www.conti-online.com/generator/www/de/en/continental/automobile/general/downloadarea/download/luftdrucktabelle_uv.pdf

I found several Audi models with the same fitment and found there was`nt much difference between them so used an average.

Dave