Thanks for your reply Dan :)
i guess il have to start to do some measuring! :)
and yea I knew I would need to change the pads just didn't know if they'd fit in the original calipers.
The a6 wheels are always shod in Bridgestones as that's what my dad has always used and recommended. He tried others but found the bridgestones to be the best on the a6.
Like you, I see it pointless buying rubbish tyres. They wear out quicker plus the fact they effect handling and braking. Most people forget The tyres are the only thing keeping you on the road.
Thanks again :)