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.

The Department of Polymer Technology at Karnataka (Govt) Polytechnic, Mangaluru, in association with the Polymer Alumni Welfare Association (PAWA), has announced the third edition of DPT Con, a national-level conference scheduled to be held on 23–24 January 2026 at the institute’s Mangaluru campus .

Carrying the theme “Sustainable Polymer for a Smarter Future,” DPT Con 2026 aims to bring together industry professionals, alumni, academicians, researchers and students on a common platform to advance learning, collaboration and infrastructure development in polymer science and technology.

Karnataka (Govt) Polytechnic, a 78-year-old autonomous institution approved by AICTE, has been home to the Department of Polymer Technology since 1975. Over the past five decades, the department has produced more than 1,000 polymer technologists who today serve across the rubber, plastics, TPE and composite industries in India and abroad. Many of these alumni now hold senior technical and leadership roles, forming a strong industry–academia bridge .

PAWA, established in 2017 by senior alumni of the department, has played a pivotal role in strengthening this ecosystem. The association focuses on enhancing student competencies through industry engagement, infrastructure upgrades and knowledge-sharing initiatives. Earlier editions of DPT Con, held in 2018 and 2023, directly contributed to the upgradation of the rubber processing laboratory and the establishment of a modern plastic processing lab at the institute .

Building on this legacy, DPT Con 2026 has set ambitious objectives. The conference seeks to raise funds to establish a cutting-edge incubation centre, provide scholarships to meritorious and deserving students, and support the maintenance and modernisation of existing rubber, plastic, TPE and composite laboratories. Enhanced student exposure through advanced equipment and real-time industrial interaction is a key focus area, alongside fostering long-term collaboration between industry, alumni and academia .

The two-day programme will feature technical paper presentations, expert lectures, plenary discussions, networking sessions and cultural programmes. A structured sponsorship framework—ranging from main and platinum sponsors to gold, kit and lunch sponsors—has been designed to encourage active industry participation, with opportunities for technical presentations and brand visibility during the event .

Organisers have set a fundraising target of INR 20 million to support the planned initiatives and have invited industry leaders, alumni and well-wishers to contribute through sponsorships, kind support or direct participation. According to the organising committee, contributions to DPT Con 2026 will have a direct and lasting impact on student skill development and the creation of infrastructure aligned with contemporary industry standards .

With sustainability, innovation and collaboration at its core, DPT Con 2026 is positioned not merely as a conference, but as a collective effort to shape the next generation of polymer technologists and strengthen India’s polymer ecosystem for the future.

Pirelli’s 2025 was defined by exceptional innovation and acclaim across its product lines and pioneering technologies, earning numerous independent awards and test victories. The company’s flagship families – P Zero, Cinturato and Scorpion – collectively secured 27 podium finishes in 34 comparative evaluations, with 15 of those positions being first place. New global market launches were particularly successful; both the fifth-generation P Zero and the new Cinturato summer tyre each claimed two major victories. The P Zero was celebrated as the top ultra-high performance summer tyre by industry experts, while the Cinturato demonstrated an outstanding blend of safety and efficiency. Winter performance was also highlighted by the P Zero Winter 2, which won its category in rigorous testing by a leading Swedish automotive magazine.

Specialised technologies integrated into these tyres further enhanced their appeal, offering motorists tangible benefits such as increased puncture resistance and reduced cabin noise. Meanwhile, the all-season segment saw remarkable dominance from Pirelli, especially in the European market. The Cinturato All Season SF3 proved extraordinarily versatile, earning 11 test victories and widespread praise for its balanced safety profile across diverse conditions. Its SUV-oriented counterpart, the Scorpion All Season SF3, quickly replicated this success following its launch. This collective achievement led Pirelli to be crowned the All Season Champion and Top Manufacturer of All Season Tyres by prestigious German institutions.

Complementing these product triumphs, Pirelli’s Cyber Tyre technology received significant international recognition, underscoring its role in advancing connected mobility. This integrated system uses in-tyre sensors and proprietary algorithms to communicate vital data with vehicle electronics in real time, enhancing safety and performance. Over the year, it was honoured four times across different continents, including a top innovation award in the United States, a safety prize in France, a pan-European safety accolade and a Company of the Year title from a noted market analysis firm. These awards collectively affirm how Pirelli’s digital advancements are fundamentally transforming traditional automotive components, positioning the company at the forefront of the industry’s connected future.

For over a decade, Continental has served as the exclusive tyre supplier to Cemex in the UK, providing comprehensive solutions for the building materials leader's entire fleet. This partnership, initiated in 2011, began when Cemex selected retreaded tyres from Continental’s Bandvulc brand and became an early adopter of the ContiConnect digital monitoring system. Cemex, founded in 1906 and a major supplier of concrete, asphalt and aggregates, operates an extensive UK network of quarries and plants serviced by a large fleet of cement vehicles, dump trucks, trailers and ships.

The demanding environments at Cemex sites, featuring sharp rocks and uneven terrain, previously made tyre-related vehicle breakdowns a significant operational hurdle. By equipping the fleet with Continental’s premium new and retreaded tyres, the company has substantially enhanced vehicle safety, reduced downtime and improved overall fleet efficiency. According to Carl Milton, Cement Logistics Manager – UK at Cemex, this open-book relationship has yielded continuous benefits, from lowering driving costs to increasing vehicle durability and performance.

A cornerstone of this collaboration is the ContiConnect tyre pressure monitoring system. Sensors in the tyres provide real-time data on inflation and temperature, transmitting this information to cab displays and a web-based platform for fleet management. Nigel Ponton, UK Fleet Engineering Manager at Cemex, notes that the system does more than monitor deflation; it analyses heat transfer to predict imminent brake or wheel bearing failures, enabling proactive maintenance. Email alerts from the platform allow both the transport team and tyre providers to address issues in advance, supported by additional checks from Yard Reader stations at Cemex plants.

The partnership has deepened through joint innovation and testing. Milton highlights that the two companies have worked closely to optimise tyre designs for Cemex’s unique operational environments, achieving the best possible fuel economy. Cemex is frequently invited to trial new tyre models, providing feedback that directly contributes to the refinement and development of Continental’s product range. Pina Wallace of Continental concludes that this cooperative relationship is a perfect example of mutual success, where tailored solutions meet specific customer demands while invaluable feedback enhances product offerings. This synergy underscores Continental’s customer-centric approach and the tangible, shared value born from a deeply collaborative alliance.

Firestone, a subsidiary of Bridgestone Americas (Bridgestone), has launched the next generation of its ultra-high-performance summer tyre, the Firehawk INDY 500 V2. This tyre builds upon its predecessor's legacy by incorporating advanced ENLITEN technology, marking its first use in a Firestone ultra-high-performance product. This integration aims to deliver a heightened driving experience while also focusing on sustainable performance and improved fuel efficiency through reduced rolling resistance.

Engineered specifically for sports cars and sedans, the tyre is offered in 65 sizes to accommodate wheel diameters from 16 to 20 inches. It is designed as a fitting match for popular performance models such as the Chevrolet Camaro, Ford Mustang, Dodge Charger and Challenger, Mazda Miata and Nissan 350Z/370Z. The design intent is to translate Firestone's storied IndyCar racing heritage into a tangible driving dynamic for everyday enthusiasts.

Significant technical enhancements define the new V2 model. A revised tread pattern and compound work together to provide sharper steering response and increased cornering stability, fostering a more connected feel between driver and road. Furthermore, the tyre's construction prioritises durability and all-weather capability. Its optimised contact patch and specialised groove design promote even wear for extended tread life while also efficiently channelling water away to maintain reliable wet-weather braking and handling.

This introduction continues the celebration of Firestone's 125th anniversary, reinforcing the brand's commitment to offering dependable, high-value performance. The Firehawk INDY 500 V2 is now available for purchase, presented as a balanced offering that seeks to unite responsive driving excitement with considerations for longevity and environmental efficiency.

Todd Chapman, Senior Manager – Product Strategy, Bridgestone Americas, said, “The new Firehawk INDY 500 V2 tyre is for enthusiasts who dream of the excitement that’s only found behind the wheel. Inspired by the iconic motorsport legacy at Firestone, the Firehawk INDY 500 V2 tyre is designed to deliver the sporty grip and responsive steering that can elevate every drive into an exhilarating adventure, whether on the road or on the circuit.”