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4 in 10 drivers are running on dangerously uninflated tyres

Published 12 January 2018

Extensive research by Michelin and Kwik Fit has found that almost 40 per cent of cars in the UK are running on at least one tyre that is dangerously uninflated, some as low as 14PSI below the recommended pressures.

Michelin classifies tyres that are between 7psi and 14psi below the manufacturer’s recommendation as “dangerously underinflated”, while 14 psi or more underinflation is deemed to be “very dangerous.”

Michelin and Kwik Fit technicians found 27.56 per cent of cars they checked had at least one dangerous tyre, with 12.01 per cent having at least one very dangerous tyre.

Michelin's spokesman, said: “Driving around on underinflated tyres costs money and it can cost lives. We wanted to team up with Kwik Fit to encourage motorists to check their tyre pressures regularly. It makes sense from a cost and environmental point of view, but more importantly it’s critical for the safety of the vehicle, its passengers, other road users and pedestrians.”

Running a car with tyres underinflated by 7psi decreases fuel efficiency by about one mile per gallon. Michelin estimates that underinflated tyres could be costing motorists in a city the size of Manchester more than £2 million a year in unnecessary fuel consumption – as well as pumping thousands of tonnes of additional CO2 into the atmosphere.

Running a car with tyres underinflated by 7PSI decreases fuel efficiency by about one mile per gallon. If average fuel consumption is assumed to be 45 miles per gallon on correctly inflated tyres, and average distance driven is 7,500 miles a year, motorists on 7PSI underinflated tyres are using on average 17.2 litres of fuel a year unnecessarily.

Kwik Fit added: “Checking tyre pressure is as important as checking tread depth, as tyres at the wrong pressure will compromise handling, grip and braking. As well as the significant safety issues, incorrectly inflated tyres will hit drivers in the pocket through excessive fuel consumption and increased tyre wear. It’s worth reflecting on the fact that a car’s tyres are the only thing to connect it with the road and we urge motorists to check their air pressure, tyre condition and tread depth every fortnight.”

For more tyre, safety and economy advice, visit www.michelin.co.uk and www.kwik-fit.com 



aethelwulf    on 12 January 2018

What turkeys visit Kwit fit? Nitrogen in your sign sir? No it is in the atmosphere anyway as goes in the tyre when I do it myself.

rcaddy    on 12 January 2018

I would never go to Kwik Fit after I discovered what they did to my son's car for the previous owner. Whilst he was at University his car was at home and I drove it occ assionally. One day it would not start so up with the bonnet and I discover that the tapered positive terminal has been fitted upside down. I went to the local motor factors and asked for a new terminal. The assistant asked why I needed it so I showed him the old one with a Kwik Fit label. He was dumbfounded and said 'and they do brakes as well'. Enough said.

jchinuk    on 14 January 2018

You only need to walk across a carpark to see visibly under inflated tyres. It is also regular to see them in traffic, rather more worrying as the fact the vehicle has been driven means the tyres are warmed and the pressure increased!

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