What is the minimum legal tyre pressure in the UK?

Legal tyre pressure requirements

There is no specific numerical minimum tyre pressure defined in UK law. However, this does not mean you can ignore it.

The legal position

While there is no stated minimum PSI, driving on a significantly underinflated tyre can be treated as driving with a tyre in a dangerous condition. This offence carries a fine of up to £2,500 and 3 penalty points per tyre.

What you should do

The practical minimum is whatever your vehicle manufacturer recommends. Always follow the pressures listed in your handbook or on the sticker inside the driver's door frame. These are the pressures that keep your car safe, efficient and comfortable. Check and adjust at least once a month.