MOTORISTS have been left raving about a £9 Amazon find that can slash your fuel bills and keep you safe.
Driving a vehicle with tyre pressure at 40% below the recommended level can increase the car's fuel consumption by up to 8% - costing the average family around £140 a year, studies have found.
And driving with underinflated tyres is dangerous and can result in the tyre rubbing wrongly on the road and it wearing through prematurely.
Luckily, a money-saving item can help make the problem vanish.
The digital tire pressure gauge is a super-slim must have for savvy drivers.
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The genius item can help drivers check the PSI on their car's wheels to keep them in perfect road-ready condition.
The AstroAI gauge boasts a lighted nozzle and it can take the guesswork out of nightmare readings.
All you need to do is find the stud that sticks out of the tires and use the device to check the pressure.
The gauge can work on trucks, motorcycles and even bicycle tires too.
Drivers can snap up theirs for just £9 on Amazon.
Many motorists praised the little gadget, with one saying: "A rider's friend for tyre maintenance.
"As a motorcycle rider, I've found the AA Digital Tyre Pressure Gauge to be an essential tool for my rides."
Another user added: "Easy to use, easy to read and as far as I can tell its accurate as well. Keep one in the glove compartment."
A third penned: "It works perfectly well and it's very handy to keep in the car."
Experts said motorists should check their tyre pressure once a month and before making long journeys or carrying heavy loads.
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It comes as an expert mechanic revealed the essential item that "smart" drivers keep in their boot to avoid being stranded in winter.
Scotty Kilmer shared the handy tyre tip on his YouTube channel - it's an absolute must during the colder months.
The £12 gadget allows drivers to top up their tyre pressure on the go, rather than having to make it to a petrol station or garage to do it for them.
