Jan Heine has long been advocating the use of wider, more supple, tyres as the most effective change to increase speed and comfort without requiring extra effort.
Read his thoughts on wider tyres here.
Another article on Optimizing Your Tire Pressure gives a chart of pressures for different tyres and weight distribution.
- online calculator to find out what pressures are best for your bike.
- Android app to work out the optimal pressures for your bike on the day.