Follow the links and you should pick up some details on choosing the tyres and also some suggestions (if not a little old perhaps) on where to get them done.
Unce heard of fellow approx 4 years ago, that was importing second hand tyres, after a claim for fitting a faulty tyre he had to close down, so in this day and age I wouldnt think that thare would be anyone fitting seconds as it would be a bit dangerous for them and for the public,