When did you last check the tyre pressures on your car? Maybe you never do and it’s only looked at when the garage does your servicing.
Tyres can loose 1 or 2 PSI per week. If your tyres are meant to be 30 PSI then they could be down to 27 in a month. That’s a 10% loss which could increase fuel consumption by a whopping four per cent.
Work out the effect on your pocket as well as your carbon footprint.
For various references, just search the web for tyre pressures and fuel economy