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.

Prometeon Tyre Manufacturing is in discussions with Egypt’s Ministry of Investment and Foreign Trade over a planned US$400 million expansion, as the company moves to scale up production and strengthen its position in one of its key regional hubs.

A senior delegation from parent company China National Tire & Rubber Company met Minister Hassan Al-Khatib in Cairo to outline Prometeon’s growth plans for its Amreya factory in Alexandria. The group included chairman Wang Jian Jun, vice president Sun Deng, Prometeon Egypt chairman Omar Mehna, deputy general manager Yuan Liang, Africa–Middle East CEO Stefano Ziliani and CFO Hisham Abdel-Hadi.

During the meeting, Al-Khatib commended the pace of Prometeon’s development efforts, saying the ministry “will spare no effort to meet the company's requirements, in the context of preparing a conducive climate for investment and to protect the competition”. He also said Prometeon would receive continued backing through the China Unit at the General Authority for Investment and Free Zones to ensure the company has “all the necessary information and required data”.

Prometeon executives told the minister that the planned investment aims to increase its investments by $400 million, which is in production of 1 1 one million additional car tires and upskill the existing factory efficiency.

 Prometeon’s Alexandria complex currently produces about 5.2 million tyres annually, and the expansion would introduce new manufacturing technologies to raise output and improve capability.

As part of its proposal, the company is seeking an additional 200,000 square metres of land adjacent to its current site to support the enlarged facility. Prometeon is also exploring the establishment of a dedicated free zone to serve its export-focused operations.

For Prometeon, the investment aligns with its strategy to reinforce Egypt as a central platform for supplying markets across Africa, the Middle East and Europe. The company views the country’s manufacturing base and export access as key strengths as global demand patterns shift.

The talks signal the company’s intention to deepen its long-term commitment in Egypt, subject to final approvals and land allocation.

Yokohama Rubber Co. has opened a new passenger-car tyre plant in Hangzhou, completing the project one month ahead of schedule and marking the first major milestone under its fast-build manufacturing strategy in China.

The company held an opening ceremony recently, attended by local government officials and community representatives. Yokohama Rubber was represented by President and COO Shinji Seimiya, who praised the speed of construction and stressed the plant’s role in the group’s long-term ambitions.

In his remarks, Seimiya said he was grateful for the support that allowed the project to finish ahead of plan. He also noted that the new plant is a very important project for Yokohama Rubber's sustainable growth in the future and that every effort will be made to quickly achieve mass production and deliver high-quality, high-value-added products to the Chinese market as soon as possible.

The Hangzhou facility is the first plant built under the company’s “1-year plant” challenge, a core initiative in its medium-term strategy, Yokohama Transformation 2026. The programme aims to speed up factory construction while lowering production costs and improving efficiency. Work on the new plant began in December 2024, with operations now starting in November 2025.

The project also fulfils a request from the Hangzhou government to relocate an older plant as part of the city’s environmental plans. The new factory will have an annual capacity of 9 million tyres—about 3 million more than the site it replaces—positioning Yokohama to meet rising demand for passenger-car tyres in China. Full-scale production is expected by the second quarter of 2026.

The expansion strengthens the company’s supply of high-value tyres for China’s fast-growing new energy vehicle market, including EV-focused designs and larger rim sizes.

Alongside the rapid-build initiative, Yokohama is pushing to raise the share of premium products in its consumer tyre business by expanding sales of its ADVAN and GEOLANDAR brands, winter tyres, and 18-inch and larger tyres. The company is also rolling out regional product strategies to tailor development and sales to market-specific trends.

The opening of the Hangzhou plant underscores how Yokohama Rubber is trying to sharpen its competitive position in Asia’s largest tyre market while keeping pace with shifts in vehicle technology and local regulations.

HS HYOSUNG ADVANCED MATERIALS has been honoured as a Community Contribution Certified Company for the seventh consecutive year. The recognition was conferred at the 2025 Community Contribution Recognition Day event in Seoul, where the company also received a Minister of Health and Welfare’s Commendation and the highest possible ‘S’ grade. This dual accolade underscores the sustained public value and consistent performance of its social responsibility programmes.

The certification itself is a rigorous evaluation administered by the Ministry of Health and Welfare and the Korea National Council on Social Welfare. It involves a comprehensive review based on ESG Principles, spanning multiple evaluation areas and numerous detailed indicators. In the latest assessment, the company excelled particularly in environmental management, earning recognition for its robust sustainability and carbon-neutral practices. Its diverse community initiatives, which are developed through long-term regional partnerships and extensive employee volunteerism, were also highly commended for building a stable and effective collaborative framework with local communities.

This ongoing commitment has been strategically reinforced following the establishment of the HS Hyosung Group in 2024. Under the new slogan ‘Value, Together’, the company has redefined its approach to social contribution. Its efforts are now organised around three core pillars: providing support for vulnerable groups, fostering the advancement of local communities and culture and promoting eco-friendly initiatives.

H S CHO, Vice Chairman, HS HYOSUNG, said, “Receiving the Minister of Health and Welfare’s Commendation and the highest ‘S’ grade is the result of our longstanding commitment to putting ‘Value, Together’ into action within our communities. We will continue to carry out diverse social contribution initiatives as a responsible company that grows together with local communities.”

Toyo Tires has become a member of the Global Data Service Organisation for Tyres and Automotive Components (GDSO). This international non-profit is dedicated to creating universal data standards for tyres and auto components. Through this collaboration, Toyo Tires will intensify its efforts to establish industry-wide systems for tyre identification and traceability, which are crucial for modern supply chains.

A core component of this initiative involves the use of radio frequency identification (RFID) technology. This wireless system allows for non-contact identification of individual tyres, which significantly improves the accuracy and efficiency of quality assurance and inventory management processes. By building a comprehensive database of its products, Toyo Tires will enhance information reliability across the entire industry.

The data accumulated through RFID will be instrumental in developing high-value-added services, particularly within the company’s solution business such as retreading and maintenance programmes. This strengthens information management throughout a tyre's entire life cycle. Furthermore, this technological adoption supports Toyo Tires' broader commitment to sustainability. By proactively leveraging digital tools like RFID, the company aims to reduce its environmental impact while simultaneously enhancing its corporate value and advancing the development of more sustainable tyres.