Well, just like Mikey, I think it's the estate agent bit that does it........
I do about 100 - 150 miles a day with my job, which is all fast A/B roads where i am constantly going from 30-70, 70-40, over taking, hairpin, etc.
I have a remapped 130 tdi and i put on Uniroyal rainsports about 3k ago and i'm genuinely worried that they are going to need replaced very soon. Although 61quid fitted at my local tyre place i'm not going to complain too much.
My car seems to generate diesel as i drive though, i get about 55mpg for the days driving. What i lose in rubber, i make in diesel! haha