Each time you go to a tyre shop or a gas station to top up the tyre pressure in your vehicle’s tyres, what the attendant fills into the tyre is normal compressed air. But what exactly does compressed air contain? Compressed air is made up of 78% nitrogen, about 20-21% oxygen, and the balance one percent consists of CO2, and tiny concentrations of gases such as neon, argon and water vapour.

 When you specifically fill nitrogen gas into the vehicle's tyres, then you should have 100% dry nitrogen in your tyre. Dry nitrogen denotes that no        moisture content or any other gases are present in the tyre.

 Jay Chakraborty, who recently bought a second hand car, says, “After I bought my car, I changed the tyres and I’ve heard so many people talk about  how good nitrogen has been for them that I decided to get my new tyres filled with nitrogen air. The car feels a lot better on bumpy roads, and I don’t  have to worry about checking tyre pressure every week.”

Benefits of nitrogen Vs compressed air

Nitrogen as a gas is made up of big molecules, whereas oxygen molecules are much smaller in size compared to nitrogen molecules. When compressed air is put into a vehicle’s tyres, the moisture in the tyre seeps through the rubber over time and evaporates quicker as its molecules are smaller in size. But as nitrogen molecules are bigger in size, they do not permeate the tyres rubber so easily and hence will stay in the tyre for a longer duration. This means that your vehicle’s tyres will lose less pressure over time compared to regular compressed air filled tyres.

For example: An inactive vehicle, whose tyres are filled with normal compressed air will lose tyre pressure every week. But a 100% nitrogen-filled tyre will lose tyre pressure a lot slower and won’t need to be topped up as frequently. 

Titus Remedios, “I filled nitrogen in the new tyres that  I purchased for my Maruti Ecco in June 2019. That time the tyre pressure filled with nitrogen was 35Psi. I use the car once a week and after the lockdown, the car hadn’t been used in months. I recently went back in October 2020 to the place where I had filled the nitrogen in the car tyres and the tyre pressure after 14 months had only dropped to 22Psi. .

Another point to note, nitrogen filled tyres get a green or blue colour valve cap. This is a universal symbol that your vehicle's tyres are filled with nitrogen and not compressed air.

Is Nitrogen right for you?

Over-inflation and under inflation of tyres make a major difference on the race track. But on your normal city road does it make a huge difference? Under-inflated tyres normally lead to less mileage, uneven wear on the tyre treads and more tyre wear and tear overall. Over inflated tyres run the risk of burning out the contact patch on the tyre too quickly, while adding more bounce vs grip to a vehicle's stability. In hot climate conditions, your vehicle's tyre pressure can jump up tremendously. Highway running speeds coupled with a harsh sun beating down, can lead to a  tear in the tyre or in extreme conditions, a tyre bursting. This is where nitrogen-filled tyres shine the most. Due to their molecular build, nitrogen molecules stay at a constant temperature in a tyre. So even if the temperature outside decreases or increases, the nirotgen in the tyre will remain the same. That is why race cars and racing motorcycles only use 100% nitrogen in their tyres all the time.

Now we are all not professional racers, but we do commute on a daily basis and even go for the occasional weekend drive out of the city for some sightseeing and relaxation. Will filling nitrogen in your vehicle's tyre help you? There are many who swear by nitrogen-filled tyres and an equal amount who feel that regular compressed air works just fine.

Personal tyre maintenance

If you are someone who keeps a check on the vehicles tyre pressure weekly and tops up the air when needed, you won’t need nitrogen filled into your vehicles tyre. However, if you are someone who tops air pressure once a month or once in two months, then filling nitrogen in your vehicle's tyres will help you reap the benefits of it. If you constantly make long highway trips and most of your time is spent behind the wheel, then filling nitrogen in your vehicle's tyres will be a boon.

Yash Ramrakhyani from Palghar runs a big tyre shop which sells Apollo, Bridgestone, Continental, Michelin and Yokohama tyres for every vehicle from a scooter to a heavy duty tempo. He says, “I get an average of 300 customers a year who want nitrogen filled in their vehicle’s tyres. There was a big local demand in the area for nitrogen-filled tyres, hence my father and me invested in the nitrogen unit. Tyres don't get hot, and nitrogen level doesn't go down so fast is what I have heard from customers as feedback, but the fact that people think nitrogen levels in the tyre doesn't go down is false. Even nitrogen-filled tyres have to be checked for tyre pressure once a month.

Nitrogen myths busted

Myth 1: Your vehicle's mileage will increase.

Truth: Your vehicle’s mileage depends on a lot of factors, tyres being just one small part of that equation. Having nitrogen filled tyres only gives you the benefit of having a most constant tyre pressure. However compressed air and nitrogen filled tyres both will loose pressure after a certain amount of time.

Myth 2: Your vehicle's comfort will be better, it will be soft on bumps.

Truth: Compressed air or nitrogen filled tyres will react the same way when on bumpy roads. It is the rubber compound and the type of tyres that you have that will make a difference in the ride or drive quality. As long as you maintain the right air pressure in your vehicle's tyres, you’ll be good.

Myth 3: You won’t have to fill up the tyre pressure as frequently.

Truth: Well this is true. Nitrogen-filled tyres will retain the pressure in your vehicle's tyre for a longer time duration compared to tyres filled with compressed air. However, even nitrogen-filled tyres loose pressure over time and you have to get the pressure checked and topped up from time to time.

Myth 4: Your vehicle's tyre will last longer

Truth: The tyre on your vehicle rely on you to make sure you maintain the recommended air pressure inorder for it to do its job properly. Under inflated and over inflated tyres will wear out faster when compared to tyres that have been properly maintained.

Myth 5: The rims on your vehicle won't rust

Truth: There is some amount of truth in this. As nitrogen-filled tyres contain less or no water vapour, the moisture content in the tyre is less. Less moisture equals to less rust on the inside of the wheel. But that doesn’t stop the rest of the wheel from rusting due to everyday washing and climate conditions.

Myth 6: There are few tyre shops / fuel pumps that offer nitrogen.

Truth: Compressed air is mostly nitrogen gas. So even if you have nitrogen-filled tyres, but you’re running low on tyre pressure and there’s no nitrogen filling station around, you can still fill normal compressed air. It will not have any major impact on your vehicle's tyres. Maintaining the right tyre pressure is key.

The catch

The nitrogen that you get filled in your vehicle's tyres is not a 100% or even 99% pure nitrogen. A brand new or even an old tyre once deflated has some amount of air inside it. It is the atmospheric air that's already there all around us. So unless you drain all the air in the tyre out and refill it nitrogen and drain the tyre again 2-3 times, you’ll still be running your vehicle's tyres with 90% nitrogen and not 100% nitrogen. But even then you’re not guaranteed that your vehicle's tyres will be filled with 100% pure nitrogen. There is no way to measure how much nitrogen is there in your vehicle’s tyre. Nitrogen will cost you, whereas compressed air is free at most petrol pumps or Rs.1-2 at a tyre shop. Nitrogen costs on the other hand vary from place to place and the kind of machine they have. The machines that are at the tyre shops or petrol pumps that offer nitrogen, do not deliver pure 100% nitrogen! Some machines will have a percentage rating of how much nitrogen it provides to the tyre and some have no percentage levels at all. Filling nitrogen in your vehicle's tyres can cost you anywhere from Rs.150 for four tyres to Rs.50 per tyre and can go all the way up to Rs.1,500 for a set of four tyres.

Conclusion

Have you ever noticed that vehicle manufactureres never recommend nitrogen in their manuals or at their service centers. The reason behind this is your vehicle's tyres are manufactured to run on normal compressed air. As long as you maintain the right tyre pressure in your vehicle’s tyre, you’ll be fine.

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Liberty Tire Recycling partnered with Henry County staff and volunteers for a three-day Tire Amnesty Event at the County Barn last week, during which thousands of scrap tyres were collected from residents seeking free and responsible disposal. The recurring programme, offered every three years, drew a steady stream of vehicles ranging from cars and trucks to trailers and farm equipment, generating sizable piles of tyres and underscoring both strong community participation and the persistent need for proper recycling.

County personnel, including Jason Stanley, Jeremy Raisor, James Nutgrass, Darrell Abbott, Zach Smith and Travis Buchanan, worked continuously to unload and organise tyres as residents arrived. Among those taking part was New Castle resident Charles Miller, who delivered over 100 tyres, many from demolition derby vehicles, and also brought tyres on behalf of several family members so that materials from multiple properties could be recycled.

Photo by The Henry County Local

Stanley reported that turnout substantially exceeded the previous amnesty event held three years ago, with residents arriving consistently throughout the collection period. Such events offer a convenient way to remove scrap tyres that might otherwise accumulate on properties, create safety hazards and serve as breeding grounds for mosquitoes and other pests, thereby reducing environmental risks and advancing sustainable waste management.

Officials applaud the Kentucky Division of Waste Management and its local partners for organising these programmes, noting that states collecting mandatory tyre disposal or recycling fees can reinvest them in amnesty days that channel waste tyres into the recycling stream and deter illegal dumping. While the final tally remains pending, county officials anticipate the total will rank among the most successful amnesty events in recent years.

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Max Verstappen secured his first pole position of the season for the Bahrain Grand Prix, lapping fastest at 1:35.130. Lewis Hamilton took second with a 1:35.428. Pirelli’s Soft compound played a decisive role, as the top three all set their best times on the red-marked tyre. Isack Hadjar originally qualified third but will not start from that grid slot due to a penalty.

Kimi Antonelli, fourth fastest in qualifying, will instead line up third. Hamilton began qualifying on the Medium before switching to the Soft, a strategy mirrored by Charles Leclerc, Nico Hülkenberg and Gabriel Bortoleto. The remaining drivers relied solely on the C4. Verstappen used four new Soft sets and improved his benchmark in the final sector on his last flying run.

Track temperatures peaked at 54°C during FP3 before cloud cover arrived. All three compounds appeared in the session, though most drivers concentrated on the C4. Leclerc alone ran the Hard before moving to a new Soft set. Lando Norris, Oscar Piastri, Verstappen and Hadjar used the Medium, with the reigning champion setting his best time on the C3.

Antonelli topped FP3 at 1:36.302, ahead of Verstappen on 1:36.580 and Hadjar on 1:36.860. The Pirelli Pole Position Award was presented by Alvin Chong, a Malaysian actor and singer recognised across Malaysian and Chinese entertainment.

Dario Marrafuschi, Pirelli Motorsport Director, said, “Track conditions improved progressively throughout the day, allowing the Soft compound to deliver a very competitive level of performance in qualifying. Despite this, lap times remained significantly slower than those predicted by the simulations, indicating that the track evolution was not sufficient to close the gap. In the attempt to extract the maximum potential from the C4 immediately, the degradation generated on the compound meant that no genuinely competitive laps could be completed after the first flying lap today. At the same time, in yesterday’s running it demonstrated that it can maintain an acceptable level of consistency over race distances when it is brought gradually into its correct operating window over the opening laps. This characteristic could prove particularly important tomorrow, given the number of Soft sets retained by several teams.

“Tomorrow’s Grand Prix looks especially interesting from a strategic perspective. Most drivers have two sets of Hard tyres available, which should provide a solid option for the longer stints thanks to their greater thermal resistance and lower degradation compared to the softer compounds. On paper, the Medium-Hard-Hard and Soft-Hard-Hard combinations appear to be among the most competitive. There are, however, some particular situations, such as those of Verstappen and Leclerc, who each have only one set of C2 tyres available and may therefore consider different approaches, making greater use of the Soft and Medium compounds or even evaluating three-stop strategies. In this scenario, the range of possibilities becomes much broader, with shorter stints and increased flexibility. By contrast, we are unlikely to see one-stop strategies, which on paper offer no advantage in terms of total race time at a circuit where overtaking remains possible at several points around the track. Finally, there remains an element of uncertainty related to the weather, with a chance of rain that could influence the teams’ strategic choices.”

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American tyre brand General Tire is marking 111 years since its founding on 29 September 1915, when William O’Neil and Winfred Fouse established the General Tire and Rubber Company in Akron, Ohio. What started as a regional tyre maker has evolved into an internationally recognised brand, especially noted for durable tyres suited to SUVs, off-road vehicles and pickups. Since 1987, the company has operated as part of Continental.

The brand’s history tracks closely with the growth of the North American automotive sector. During the 1920s, General Tire earned attention for its ‘General Balloon Jumbos’, which helped push tyre technology forward. As operations grew, the company widened its international reach and became a supplier to major vehicle manufacturers.

William O'Neil, Founder of General Tire

General Tire and Continental first connected in March 1949 through a cooperation agreement covering the exchange of technical expertise and know-how. By the late 1950s, General Tire had opened a tyre testing facility in Uvalde, Texas, then regarded as the largest of its kind worldwide. Continental’s 1987 acquisition opened a new chapter, giving the parent company a global production and sales network for the first time while allowing General Tire to pair its American heritage with worldwide development and manufacturing strength.

Today, the portfolio spans applications from the Grabber GT Plus road tyre and Grabber Cross A/S all-season tyre to the Snow Grabber Plus winter tyre and the Grabber AT3 Plus and Grabber X3 off-road models, all reflecting performance, reliability and American heritage. For the anniversary, General Tire introduced the next-generation Grabber AT3 Plus, an all-terrain successor to the Grabber AT3 with better snow traction, improved wet-road grip and a tread pattern built for demanding off-road use.

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Dunlop Motorcycle Europe is set to support a star-studded rider roster at this weekend’s FIM Motocross of Nations (MXoN) in Ernée, France, aiming to cap another standout motocross season. The tyre range available to competitors includes the sand-focused Geomax MX14 for loose surfaces, the intermediate Geomax MX34 and the Geomax MX54, which has become the preferred choice across a wide range of intermediate and hardpack tracks.

The company will supply tyres to 32 riders representing 16 nations, drawing talent from the FIM Motocross World Championship, North America’s Supercross and Pro Motocross series and other competitions. The event follows last weekend’s season-ending MXGP of Australia, with many of the sport’s top names returning to action in pursuit of the Chamberlain Trophy.

Dunlop has built a formidable recent record at the MXoN, having equipped riders from every winning nation over the past four editions. Team Australia took consecutive victories in 2024 and 2025, Team France claimed the title in 2023 and Team USA won in 2022. This year, Australia arrives with an entirely new lineup in Jed Beaton, Alex Larwood and Aaron Tanti, while the United States fields an all-Dunlop trio led by three-time 450 cc AMA Supercross champion Cooper Webb, joined by Julien Beaumer and Levi Kitchen.

For France, MXGP runner-up Romain Febvre spearheads the Dunlop contingent and is joined by fellow Kawasaki Racing Team rider Mathis Valin. Two-time MXGP World Champion Jorge Prado will represent Spain alongside newly crowned MX2 World Champion Guillem Farres. A host of other leading MXGP and MX2 competitors will also run Dunlop, including Camden McLellan for South Africa, Liam Everts for Belgium, Pauls Jonass for Latvia and Jeremy Seewer for Switzerland.

The MXoN serves as a fitting finale to a season of significant success for Dunlop across European and North American series. In the United States, Ken Roczen captured his first 450 cc AMA Supercross title on Dunlop, extending the brand’s streak of winning every AMA Supercross and Pro Motocross championship since 2010.

In the FIM Motocross World Championship, Guillem Farres secured the MX2 crown and led Triumph Racing to a one-two finish with teammate Camden McLellan. The pair combined for 11 of 19 Grand Prix victories. In MXGP, Romain Febvre finished runner-up, while Kiara Fontanesi narrowly missed a historic seventh WMX title, winning at Foxhills in July and adding three second-place finishes.

Wim Van Achter, Motorcycle Motorsport Manager EMEA, Dunlop Motorcycle Europe, “The fact that so many top riders continue to choose Dunlop Geomax tyres underlines the Geomax range’s performance credentials. We work closely with top riders to develop new Geomax products, using their feedback to refine our tyre technology. Our most recent innovation, Geomax MX54, makes the Geomax range our strongest and most versatile motocross range yet, drawing on our knowledge from winning top professional championships. With its broader scope, it could be the tyre of choice for Ernée’s traditional hardpack clay circuit this weekend.”

Eddy Seel, MXGP Event Leader, Dunlop Motorcycle Europe, said, “We are honoured that Dunlop Geomax tyres are the products of choice for 32 of the world’s most talented riders representing 16 different nations. The level of competition is always high at MXoN, but Dunlop has a history of success. Our riders have already proven the performance and reliability of the Dunlop Geomax range all season long, so we’re ready to continue with that this weekend. Allez!”

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