TyreSafe is one of the UK''s leading tyre safety organisations, dedicated to raising awareness about the dangers associated with defective or illegal tyres.
During the Tyresafe month 2012 the organization, through the Facebook app, is promoting the 20p Test.
Using a 20 pence piece (or a 20 euro cent coin) you can quickly and easily check whether your tyre tread depths are safe and legal. Simply insert the coin into your tyre's main tread grooves to see if the outer rim of the coin is covered by the tread. Repeat this in all the main grooves and at several points around its circumference. If you can see the rim of the coin when it is inserted at any point, your tyre may be illegal and should be checked by a tyre specialist.
Take a look at app at this page and share your results !