+1 - logically, from a legal standpoint, any of the usual things you'd throw at them dont really stand as they said the sizes and delivered exactly that. They were correct that the fitment is right for the Zed, its just the tyre sizes that are wrong. And if the tyre sizes were right for the Zed, they wouldnt be right for the other cars they list I would guess. I think the only thing you can do is haggle them down as much as possible and see how much you can get the tyres discounted. Mention that you are on here (most active Z owners site in the UK) and that if they arent careful they will get lots of bad press and loose potential customers.