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 Tire and Rubber Association of Canada (TRAC) has launched Member Spotlight Series, a new monthly initiative designed to profile the diverse organisations and leaders within the nation's tyre and rubber sector. The programme offers comprehensive examinations of member companies, covering their business models, technological advancements, environmental strategies and corporate philosophies.

Pirelli is the first company to be featured, with its profile providing insight into its leadership approach and industry contributions. Subsequent spotlights will be released monthly through TRAC’s digital platforms, including its official website, newsletters and social media channels, with each instalment detailing products, strategic goals and recent achievements.

By sharing these narratives, TRAC intends to bolster member connections and highlight the sector's role in Canada's economy and ecological progress. The series further aims to encourage knowledge exchange and collaboration, allowing members to share best practices and elevate awareness of the proficiency present within the domestic tyre and rubber industry.

Carol Hochu, President and CEO, TRAC, said, “One of TRAC’s greatest strengths is the expertise and leadership found across our membership. The Member Spotlight Series celebrates the companies and people shaping our industry while helping share the stories of innovation, advanced manufacturing, sustainability and collaboration that define Canada’s tyre and rubber sector.”

TyreSafe has announced a new alliance with Logistics UK, marking a significant step in uniting efforts to enhance road safety, promote sustainable transport and disseminate best practices within the freight and haulage industry. This collaboration formalises the mutual dedication of both organisations to address critical safety challenges facing UK's transport networks.

Logistics UK, a prominent membership association representing over 21,000 enterprises, encompasses the breadth of the supply chain, including road, rail, water and air freight. Its extensive network accounts for nearly half of the national lorry fleet, comprising more than 200,000 vehicles. Through advocacy, training and compliance support, the organisation is instrumental in maintaining secure and efficient supply chains, making it a pivotal partner for TyreSafe's safety initiatives.

The partnership underscores the growing recognition of tyre management as a cornerstone of modern logistics, impacting not only vehicular safety but also operational costs and environmental footprints. Data indicates that a majority of tyres on UK roads are underinflated, leading to approximately GBP 1 billion in annual fuel waste and accelerating tyre degradation. Furthermore, tyre defects are a primary cause of MOT failures, with over two million infractions recorded yearly, and they contribute significantly to roadside breakdowns and motorway incidents.

For commercial fleets, the stakes are particularly high, as proper inflation and tread depth are directly linked to fuel economy, emissions reduction and cost efficiency. As part of this joint effort, TyreSafe will promote its specialised, vehicle-specific safety resources, offering tailored guidance for HGVs, vans and cars. This educational push aims to empower drivers and operators with the knowledge to conduct effective tyre checks, thereby mitigating risks and supporting the logistics sector's sustainability and operational goals.

Stuart Lovatt, Chair of TyreSafe, said, “We are delighted to be partnering with Logistics UK, an organisation that shares our commitment to safer, more sustainable and more efficient transport. Tyres and their maintenance absolutely fundamental to fleet safety and performance. This partnership allows us to extend vital tyre safety messaging to a broad and influential logistics audience at a time when operators are balancing safety, compliance, cost pressures and sustainability ambitions. By working together, we can help ensure tyre safety remains firmly on the agenda across the sector.”

Arthur Gribbin, Engineering Policy Lead at Logistics UK, said, “Efficient logistics depends on vehicles operating safely, legally and reliably. Tyres play a critical role in achieving this, influencing everything from vehicle safety and fuel efficiency to downtime and environmental impact. By partnering with TyreSafe, we are helping ensure our members and the wider logistics community have access to trusted information and practical guidance to support safer and more sustainable fleet operations.”

Continental has significantly broadened its Gravity mountain bike tyre lineup by introducing 13 new combinations, thereby offering riders extensive customisation options for aggressive trail riding, enduro racing and downhill disciplines.

The expanded portfolio now includes novel size, casing and compound pairings for the Argotal, Kryptotal Front, Kryptotal Rear and Xynotal models. Additional Trail Soft and Enduro SuperSoft variants are available for 29-inch and 27.5-inch wheels, while the trusted mixed-conditions tread remains accessible for 20-, 24- and 26-inch sizes.

This strategic enlargement underscores Continental’s dedication to providing gravity riders with tailored flexibility in balancing grip, control, durability and rolling efficiency. The Enduro casing with SuperSoft compound offers peak traction for demanding trails, whereas the Trail casing with Soft compound delivers a stable and durable option for aggressive riding.

Alexander Haenke, Product Manager for MTB & Gravel at Continental Tires, said, “MTB riders have very different needs depending on where and how they ride. With these 13 new tyre combinations, we are giving riders even more ways to find the perfect balance of grip, control and durability for their individual setup. Whether they are racing enduro, pushing their limits on technical trails or simply looking for maximum confidence on the descents, our expanded Gravity range offers the performance and flexibility they need.”

AZuR partner Hofdmann Runderneuerungstechnik GmbH, based in Wittmund, has announced a significant expansion of its operational capabilities. The company, already well-known for its cold retreading services, is now integrating hot retreading for truck tyres into its production portfolio. This development follows the recent extension of the firm’s ECE R109 approval, and the first batches of hot-retreaded commercial vehicle tyres are already in production and entering the market.

This strategic move broadens Hofdmann’s technical expertise within the retreading sector and reinforces the tyre circular economy across Germany. As a longstanding member of the AZuR network, the company contributes deep knowledge in tyre repair, casing management and retreading processes. The addition of hot retreading complements the prevalent cold retreading method used in the commercial vehicle industry, offering enhanced options for specific tyre designs and applications, while both methods aim to extend the lifecycle of premium casings.

By diversifying its production programme, Hofdmann demonstrates that industry players are actively investing in retreading technologies and strategically scaling existing operations. This expansion not only bolsters the sector’s competitive position but also ensures a more reliable supply of retreaded tyres for fleet operators and commercial end-users. The process involves meticulous inspection of high-quality used casings before applying a new tread, significantly prolonging tyre usability prior to eventual material recovery or recycling.

The company’s capacity growth coincides with broader AZuR initiatives, including a recently launched European project group designed to strengthen collaboration among businesses, research bodies and value-chain stakeholders. With approximately 90 network partners, AZuR continues to pioneer solutions for maximising tyre usage and recovering raw materials. Hofdmann’s latest investment underscores that retreading remains a vital and enduring component of this sustainable industrial evolution.

Christina Guth, Network Coordinator of the Alliance for the Future of Tires (AZuR), said, “Every investment in retreading strengthens the European tyre circular economy. By expanding its hot retreading capabilities, Hofdmann is broadening its offering and creating additional opportunities to keep high-quality commercial vehicle casings in circulation for longer. This sends an important signal to the entire industry.”