DebunkedFailed for most people who tried it
Nitrogen filling improves a city bike's mileage
Sold at every second petrol pump. Does nothing at city speeds.
Do this insteadFree air, checked every fortnight, does the same job. Put the money toward the tyre itself.
Why it works
Nitrogen holds pressure marginally better over months, which matters in aviation and racing. On a commuter bike checked fortnightly there is nothing left for it to improve.
Source · https://www.consumerreports.org/cars/tire-buying-maintenance/should-you-use-nitrogen-in-car-tires-a6260003694/
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