On some of the comments about the tyres I find myself with docwra. The cars aren't priced at the top end of the market and tyres can be changed. The difference is 10% equally back and front so I wouldn't have thought that was a major safety issue - just a gearing/speedo one. I have certainly bought cars from quite well known names with less than perfect tyres.
Having said that, if was running a business of this type I would see this forum as a major opportunity so I think I would respond differently and less defensively (even though provoked) - maybe even inviting feedback - maybe even a "come and see us day" or similar. I think also that selling into the "enthusiast" community, there is a tendency for potential owners to be somewhat more anal/fussy about some of the detail. Given the cars appeared to be priced sensibly I can see nothing to be gained by overstating anything (so... for example... why describe wheels as "GT Lightweight" when they are actually the V1 Touring wheels that are the heaviest of all).... but that could just have been an innocent error.
It all seems a bit of a shame to me because the dealer obviously does care what people think and sadly in the selling business perception is everything.