trail_rat...I too use my car as a form of transport, but I value my/my passengers safety too. Your cheap tyres will one day let you down when some numpty suddenly brakes too hard in front of you, or some old codger or kid runs out in front of you.
drive further from the chap in front ? perhaps i should add that my vehicle of choice barely does the speed limit and that it accelerates to 60 in 20 seconds.
frankly i think there is more danger found in driving old cars and playing bangernomics than my choice of tires ....
as said above - if it were a focus ST or something fancy(tvr,noble , lambo , ferrari) thats going to be driven hard or a motorbike then i would spend more on tires. Like my bikes - my day to day commuter(focus alike) has basic tires - my race bike has ultra light expensive tires on