I've been doing some research on this, and seems that most of these deals involve Nankang tyres who don't make a 275/35/19 tyre, so they stick on the closest match. I've been quoted £500 extra for Falken's which come closest to matching the cars correct rolling radius which are 245/35/19 Front and 275/35/19 Rear. Gives you some kind of idea of the cost of Nankang tyres
Pete
DP Motorsport by any chance??