Have a look at some of the eco-driving guides kicking around the Internet, you will probably be surprised at how much difference a change of driving style can make. In the conversations I've had with most people about eco-driving it usually turns out they don't actually know how to drive economically and where the biggest changes can be made.
Tyres do make a significant difference, but you need to buy the right ones and bear in mind tyres which are better for mpg generally won't be as good for outright grip and handling. I find the ps3s a good mix of both as they've got a fairly smooth tread pattern and are pretty light, but still keep that mid-corner grip.
Tyres do make a significant difference, but you need to buy the right ones and bear in mind tyres which are better for mpg generally won't be as good for outright grip and handling. I find the ps3s a good mix of both as they've got a fairly smooth tread pattern and are pretty light, but still keep that mid-corner grip.