Thanks dude. They did warn me about the Tyres I'll give them that. Thats why i was enquiring on the other thread. Also to be fair it only really happened on the highway at around 110/120 which they didn't reach on their test drive.
I had something similar, after having new discs and pads fitted my rear left wheel was squaking and scraping, turned out to be a stone stuck in there. Just be firm with them and dont take their excuses.