THIS is the mind-bending puzzle that puts your vision and intelligence to the test

If you can spot the flat tyre amongst the wheels within 11 seconds, then you can claim a high IQ and 20/20 vision.

This puzzle is particularly difficult because it doubles up as an optical illusion.

Your eyes can easily become mesmerised by the maze of circles and spokes.

Soon it becomes difficult to focus on any of the wheels at all - let alone identify the flat tyre.

There are two approaches you could take to tackling this teaser.

One tack would be to study each wheel in turn, and then move onto the next.

That might get you to the solution eventually - but it would be very difficult to check every one within the time limit.

The other option is to scan your eyes across the whole picture, hoping that an irregularity jumps out at you.

Whichever strategy you plump for - you better hurry up because time is ticking by.

Here's a generous clue for the stragglers.

The offending tyre is in the top-left quarter of the picture.

Don't worry if it's still no joy, we've included the solution at the bottom of the page.

But before you scroll on, have one last go at solving it yourself.

If you've made it this far but still not spotted the tyre, then a trip to the opticians might be in order.

You can notice it by the longer, flatter area of contact between the rubber and the ground.

If you enjoyed that puzzle, have a crack at the others down below.