Mr big:After reading all these answers to to your thread my thoughts remain the same. Whether you can afford or not good quality tyres, its how you look after them is what counts. I dont walk round a car every day when I use it to check tyre pressure. I am too busy!!  I rarely use the same car two days in a row! (I have three cars) What I do is check the tyre pressure once a week without fail on all the cars. (and I'm the wife!!!.....and we know nothing about cars, do we!)  

 Even if you keep the pressures constant in budget tyres they'll still not be as good as a proper set of premium brand tyres. Treadblock design, compound and carcass construction have a huge amount to do with how the tyre peforms. If you can afford to put new tyres on you can afford premium brand tyres. they're usually only 10-15 pounds cheaper and you'll probably save that in fuel due to the fact that most good tyres have a low rolling resistance and therefore are better on fuel.