Chap I used to work with was an ex copper, loved his cars advanced VIP driver in the police and an IOM instructor, will never forget his advice when looking at tyres;
Him: "so you've got a 170bhp car, with big brakes, ASB, the latest gizmos on and all that yeah?"
Me: "Yep"
Him: "Great any of those bits attached to the road?"
Me " Well no, of course not!"
Him: "Exactly, your tyres are the only part of the car that physically attach you and the car to the road, Where do you think is the last place you want be a cheap skate?"
Me: "The tyres"
Him: "you got it"
and with that in mind I have just purchased myself a set of 4 new GY Eagle F1s Asy off of amazon for £62 each!(inc delivery!) (£10 fitted at the local garage)