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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Goodyear has introduced a new global campaign titled ‘Fast Is In Us’, dedicated to celebrating its renowned Eagle performance tyre family. The campaign debuted at the Kentucky Derby and follows last year’s STILL campaign, which underscored Goodyear’s iconic status. Fast Is In Us builds upon that foundation to elevate the Eagle legacy further.

Rather than focusing solely on traditional speed, the campaign highlights individuals deeply passionate about automobiles. It honours their appreciation for vehicle design, engineering and the tactile connection through the steering wheel. Fast Is In Us shifts attention from raw velocity to the emotional bond between driver and machine, celebrating those who feel performance rather than merely claim it.

The Eagle tyre family’s decades-long performance pedigree grounds the campaign, shaped in elite motorsport environments and high-performance automotive partnerships. After 45 years and millions of drivers, Eagle enters a new era believing fast is inherent to its design. This marks Goodyear’s first global campaign built around a performance tyre family, inviting drivers to embrace Eagle as a living philosophy rather than a one-off product.

The campaign will roll out globally across premium television, out-of-home, digital, social and cultural events. At the Kentucky Derby, the Goodyear Blimp carried the phrase Did someone say horsepower? Future integrations include the 24 Hours of Le Mans and other elite racing gatherings. Created with Publicis P1T Crew and led by BBH USA, Fast Is In Us aims to remind performance drivers why Eagle has always belonged with them.

Mark Stewart, Chief Executive Officer and President, Goodyear, said, "The performance car category is growing, and the drivers entering it want tyres worth bragging about. Eagle has more than four decades of credibility in performance and racing, and Fast Is In Us puts that legacy back to work – re‑establishing Eagle as the tyre knowledgeable drivers choose when performance truly matters. This campaign reflects how we're building Goodyear for the future: leading with premium products, authentic performance and brands that mean something."

J J Kraft, VP Global Creative, Goodyear, said, "Eagle isn't a product line – it's a piece of car culture. Fast Is In Us is a comprehensive platform built to put Eagle back at the centre of that enthusiasm. It expresses performance through feel and confidence behind the wheel, not just numbers on a page. It stands as one global campaign idea with the range to live across motorsport, retail and culture, and the ambition to lead the category, not chase it."

"For these drivers, Eagle is more than a tyre, it's a badge of devotion for drivers who respect the craft behind performance and demand confidence, responsiveness, and control every time they drive. Fast, in this world, isn't something you switch on. It's something you live," Kraft added.

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A comprehensive scientific review released under the umbrella of the Tire Industry Project (TIP) has concluded that despite significant advances in understanding tyre wear emissions, current data remains insufficient to quantify their direct impact on human health. The final paper in a three-part ‘State of Knowledge’ (SoK) series, supported by TIP as part of the World Business Council for Sustainable Development, analysed over 850 peer-reviewed studies to assess global research on tyre and road wear particles. The authors found that inconsistencies in sampling approaches, detection techniques and analytical methodologies across studies prevent reliable comparison and robust risk assessment. As a result, while interest in the topic has grown, the evidence linking tyre emissions to specific health outcomes remains inconclusive.

According to the review, tyre wear particles constitute only a small fraction of total airborne particulate matter, typically less than five percent of PM2.5 and PM10 in urban environments. Toxicological data from both in vivo and in vitro studies indicate that tyre and road wear particles are no more harmful than general ambient particulate matter, with effects that are similar to or less potent than those of other airborne particle types. Although chemicals used in tyre manufacturing have been detected in human body fluids, the authors stress that these substances are also widely used in other applications, making it impossible to clearly attribute exposure to tyres as the primary source.

The paper, independently authored by Kathrin Müller, Julie Panko, Kenny M Unice and Dr Stephan Wagner, identifies the lack of harmonised global methods for sampling, analysing and characterising tyre wear emissions as a major barrier to drawing firm conclusions. This call for greater methodological consistency aligns with the findings of the first two SoK papers published in 2025, which examined the characterisation, quantification and environmental impacts of tyre wear emissions. Without standardised approaches, meaningful comparison across studies and reliable exposure or risk assessment remain unattainable.

Looking forward, the authors recommend that future research prioritise the identification of potential exposure pathways and examine relevant health outcomes, including chronic effects, under realistic conditions. Such studies should cover urban and suburban populations across different global regions to ensure comprehensive and applicable findings. The SoK series, representing the most extensive review of global science on tyre wear emissions to date, underscores the need for coordinated international efforts to improve the identification, measurement, and attribution of these particles in both environmental and human health contexts.

Dr Wagner, one of the leading researchers of Paper 3, said, “Tyre wear emissions are a complex topic that we still only partly understand, especially in relation to human health. While research has advanced our understanding of TRWP, the current data simply isn’t robust enough to quantify any potential health risks specifically linked to tyre wear. Looking forward, cross-stakeholder collaboration is fundamental to making rapid progress. By aligning methods, sharing data and focusing on real-world studies, we can build a stronger, more consistent evidence base to inform future decisions.”

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Citira has announced the acquisition of A&P Gustavsson Däck i Småland, a well-established tyre shop in Tingsryd, Småland. This transaction adds a key service point in the region and significantly strengthens Citira’s presence across southern Sweden.

Founded in 1985, A&P Gustavsson Däck has built a lasting reputation over four decades through high-level service for both heavy vehicles and passenger cars. Anders Gustavsson, who joined the business in 1985, became Shop Manager in 1995 and took full ownership in 2008, shaping the shop into a trusted local institution. His deep community ties have made the business a valued presence beyond just tyre services. Following the transaction, Anders will become a co-owner of Citira.

Linus Engberg, an employee since 2013, will assume the role of Shop Manager after the deal closes, ensuring continuity in daily operations and service standards. The shop will remain at the same premises with the same team, now backed by Citira’s resources and network to support further growth.

David Boman, CEO, Citira, said, "We are very pleased to welcome Anders, Linus and the team to Citira. The tyre shop has an impressive history and a genuinely strong local presence. That kind of trust, built over many years, is exactly what we look for when growing our network. We look forward to supporting the continued development of the business in Tingsryd and the surrounding region.”

Gustavsson said, "Joining Citira is the right next step for the business. It has been a privilege to serve this community for so many years, and I am confident that with Linus leading the team and with Citira's backing, the tyre shop will continue to thrive and deliver the service our customers deserve.”

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Prinx Chengshan has introduced its latest ultra-high-performance tyre, the Austone Meijie, through a charity test-drive event held in Kunming on 26 and 27 April. Centred on the theme ‘Cherish Every Moment with Love’, the initiative brought together dealers and store representatives to blend cutting-edge tyre technology with social responsibility. The new tyre was highlighted throughout as the group embarked on a mountainous journey focused on rural education support.

The charity effort targeted left-behind children, addressing both educational and daily needs as part of Prinx Chengshan’s broader corporate social responsibility commitments. Volunteers travelled to Jibi Primary School in Zhongshu Town, Luxi County, where 80 percent of students are boarders and nearly half of all families come from poverty-registered or low-income households. The convoy delivered stationery kits, sports equipment and backpacks to fill resource gaps at the campus.

Beyond material aid, the event fostered personal connections and emotional warmth, with the Austone brand philosophy of cherishing every moment put into practice. The new tyre played a key role in safeguarding the journey across city streets, highways and winding mountain roads. Participants gained direct experience of the Austone Meijie’s handling, durability and comfort throughout the convoy’s travels.

Professional test-drive sessions at Kunming Yujia Auto & Motor Sports Park further demonstrated the new tyre’s capabilities. In dry braking tests, the Austone Meijie delivered confident control and immediate response. The tyre’s high-grip tread compound and wide longitudinal grooves tackled wet surfaces by ensuring stable lane changes even through standing water. The new tyre provided unwavering lateral support and precise steering throughout the journey.

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