when we bought our current car (250hp) it had conti's on. when we changed them we put £50 tyres on.............and guess what? we had £50 performance from them. they were dreadful wet or dry! in the end i turned off the esp and span them out as i wanted shot of them. from then on we take the advice of the fitters (who we know), if they say a tyre is ok we'll use them, if not we pay a bit more!