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.

Hankook Tire, the exclusive tyre supplier for the ABB FIA Formula E World Championship, played a central role in the season’s pivotal Japanese double-header. As the official race tyre for all competitors, the company’s iON Race compound was put to the test under extreme and shifting conditions during Rounds 14 and 15 of Season 12 at the 2026 TDK Tokyo E-Prix.

The weekend’s on-track action produced two dramatic winners. CUPRA KIRO’s Dan Ticktum snatched victory in Round 14 with a last-corner overtake on Jake Dennis, while Nick Cassidy completed the podium. The following day, Mahindra Racing’s Nyck de Vries claimed Round 15, finishing ahead of Cassidy and Dennis, who secured second and third respectively. The entire paddock also observed a period of remembrance for the late Cyril Blais.

The 2.575-kilometre temporary circuit, featuring 18 corners and situated around Tokyo Big Sight, hosted its first-ever night races, drastically altering track conditions from practice to competition. Unstable weather compounded the challenge, with a Sunday thunderstorm cancelling Free Practice 3 and leaving a damp, drying surface for Round 15 that demanded constant adaptation in tyre warm-up and strategy.

Throughout the weekend, Hankook’s iON Race tyre demonstrated reliability across the evolving grip levels and temperature swings. Following the Tokyo results, Dennis retains the championship lead with 146 points, narrowly ahead of Mitch Evans and Pascal Wehrlein. The title battle remains fiercely contested and will be resolved at the season-ending Hankook London E-Prix double-header on 15–16 August.

Manfred Sandbichler, Senior Director, Hankook Motorsport, said, “Bringing Formula E night racing to Tokyo for the first time made this a distinctive weekend and one of the more unusual tyre assignments of our season. The contrast between afternoon running and the 20:05 races shaped how teams prepared for both events, and the iON Race managed that transition and the changing weather conditions well, delivering consistent and predictable performance as the circuit cooled through the evening.”

Tegeta Green Planet recently contributed to the ‘Circular Future’ green camp, an environmental education initiative organised by CENN and funded by the European Union. The camp, which hosted 23 teenagers from the Adjara and Kakheti regions, was designed to deepen ecological understanding, advocate for waste-free systems, and inspire long-term behavioural change among the next generation.

Throughout the week-long gathering, young attendees engaged with forward-thinking methods for minimising refuse, prolonging product life cycles and improving separation and recovery processes. Interactive workshops translated abstract circular economy theories into tangible daily actions, equipping participants with the know-how to conserve materials and shrink their personal environmental toll.

A noteworthy component of the programme occurred on 22 July, when a specialised seminar titled ‘Circular Economy: Waste Reduction and Recycling for Public Health’ was convened. Co-hosted by Tegeta Green Planet, the UNDP and the Waste Management Business Association, the seminar examined the intersection of ecological integrity and human well-being, illustrating how robust recycling systems directly benefit community health outcomes.

Closing the day’s agenda, Tegeta Green Planet’s Director, Shalva Akhvlediani, offered an in-depth look at the Extended Producer Responsibility model currently unfolding in Georgia. He traced the journey of end-of-life vehicle components – from used tyres and spent lubricants to depleted batteries – through collection, transport and reprocessing channels. Akhvlediani also highlighted his organisation’s network of over 350 domestic producers and importers, stressing that youth education remains a cornerstone of their mission. The floor was then opened for a lively exchange, where students posed probing questions, debated local environmental dilemmas and floated their own grassroots suggestions, reinforcing the message that responsible resource use begins with informed individual choices.

Nexen Tire reported second-quarter revenue of KRW 891.3 billion and operating profit of KRW 34.3 billion, as growth in Europe and higher sales of premium products supported performance despite rising costs and geopolitical uncertainty.

Revenue increased 10.8 per cent from a year earlier, driven by demand in key markets, particularly Europe, the company said .

The tyre manufacturer said its strategy of expanding original equipment (OE) supply programmes and diversifying replacement (RE) tyre sales helped support growth amid weaker demand in the automotive market. Sales of 18-inch and larger tyres accounted for 38.8 percent of total sales, up 3.6 percentage points from a year earlier, reflecting a greater focus on premium products.

Profitability came under pressure as higher raw material prices and increased ocean freight rates raised costs. The company also incurred one-off expenses following the final ruling on US anti-dumping duties, which resulted in a higher tariff rate than previously expected.

Europe was the strongest-performing region during the quarter, with revenue reaching KRW 407.2 billion, the first time quarterly sales in the region have exceeded KRW 400 billion.

The company attributed the growth to higher OE sales from its European manufacturing plant, business expansion in the UK, Türkiye and other markets, and improved distribution and logistics following the addition of a finished-goods warehouse at the plant.

In South Korea, demand for electric vehicle (EV) and sport utility vehicle (SUV) tyres remained strong. Nexen Tire said its expanding OE portfolio, which includes the Hyundai IONIQ 6, Kia's EV3 to EV9 models and other domestic electric vehicles, supported higher OE revenue and increased sales of larger-diameter tyres.

The company also said continued growth in rental sales within the replacement market improved its product mix, while its first OE supply agreement with BYD strengthened its position in the global EV market.

Alongside its financial results, Nexen Tire said it had expanded its OE supply during the quarter to electrified models including BYD vehicles and the Hyundai STARIA EV. Supply to premium automotive brands also increased from a year earlier, supported by research and development initiatives, including AI-based performance prediction technologies.

"Despite growing cost pressures from external factors, we have continued to achieve top-line growth on the back of strong sales in key markets," said John Bosco (Hyeon Suk) Kim, CEO of NEXEN TIRE. "With the stable ramp-up of the second-phase expansion at our European plant and the results of our distribution improvements in North America, we expect more tangible improvements in earnings."

Pirelli has officially communicated to all Formula 1 teams the tyre compound selections for the upcoming Dutch, Spanish and Italian Grands Prix. The Italian manufacturer has opted for the medium-range C2, C3 and C4 compounds for the events at Zandvoort and the new Madrid circuit, while the Monza race will see the softest available tyres, the C3, C4 and C5, deployed.

For the Dutch Grand Prix at Zandvoort, Pirelli has confirmed the same compound choice as the previous year. The coastal circuit is defined by its medium and low-speed corners, including two banked turns, which place significant vertical and lateral loads on the tyres and demand high aerodynamic downforce. The track surface itself offers low inherent grip, a challenge compounded by sand from the nearby beaches being blown onto the asphalt, further affecting tyre performance.

The Italian Grand Prix at Monza presents a contrasting challenge, with its recently resurfaced track encouraging teams to run low-downforce configurations. The pit lane loss time for a tyre change is among the highest of the season, incentivising teams to extend stints and manage degradation to achieve a one-stop race. However, the potential for high ambient temperatures could complicate this strategy, making tyre management more difficult.

Making its debut on the calendar as the Spanish Grand Prix, the semi-permanent street circuit in Madrid features 22 highly varied corners, significant elevation changes and the longest banked turn in the championship. Simulations indicate that the loads on the tyres are comparable to those at Silverstone and Spa-Francorchamps. Consequently, Pirelli’s selection of the medium-range compounds is designed to favour a two-stop strategy and offer greater protection against overheating, a risk to which the softer C5 compound would be particularly vulnerable in warm conditions.