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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Pirelli has chosen the softest trio in its range for the Mexico City Grand Prix, with the C3 as Hard, the C4 as Medium and the C5 as Soft. This departs from last year, when a compound step using the C2 as Hard proved less appealing than the softer alternatives. The second round of the Americas triple-header takes place at the circuit named after brothers Pedro and Ricardo Rodríguez, unique on the calendar due to its altitude of over 2,000 metres.

A large portion of the circuit has been resurfaced, covering Turn 16 to Turn 1 and Turn 7 to Turn 16, leaving only the first sector largely unchanged. New asphalt normally brings higher grip and lower roughness, though its actual characteristics will need assessment during the opening stages. The track is often dirty early on, with grip improving lap after lap, and that evolution could be more pronounced this year.

The Autódromo Hermanos Rodríguez has traditionally been one of the least demanding circuits on tyres, with low-speed corners and limited lateral loads keeping wear under control. The thin air reduces aerodynamic load, increasing tyre slip and making graining a factor to watch, possibly more so with the smoother asphalt. The circuit's low severity could favour a one-stop race, though tyre management to extend stints will remain important, particularly for the rear axle.

Strategy may depend more on driver confidence in a compound than on genuine tyre life limitation, with some teams favouring softer compounds for grip and others the Hard for consistency. The Soft could play a central role, having shown strong characteristics on low-severity circuits. Braking performance also warrants monitoring, as the altitude reduces aerodynamic efficiency and the long main straight into Turn 1 could increase lock-up risk. Last year's grid was split between one-stop and two-stop strategies. This will be the sixth Grand Prix under the Mexico City Grand Prix name, with Max Verstappen the most successful driver at the venue with five victories, matching Red Bull. The Pirelli Podium Cap celebrates Día de los Muertos, which falls on race Sunday.

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Mitas marked its entry into Chinese agriculture with an official brand ceremony held on 27 October at the National Exhibition Center in Tianjin, during CIAME 2026, the China International Agricultural Machinery Exhibition. Customers, partners and industry figures attended the event, which introduced the international tyre maker and its agricultural portfolio to the local market.

Bringing close to 100 years of tyre manufacturing experience and enduring ties with farmers and equipment builders around the world, the company presents Chinese customers with a commercially available international option built on proven agricultural knowledge, technology and dependability. The dedicated exhibition booth featured the HC 2000 and SFT CHO. The former, a VF tractor tyre, delivers high load capacity at low inflation pressure alongside efficient traction and diminished soil compaction, achieved through a large contact patch and even load distribution. The latter, engineered for demanding cyclic-load duties, pairs high load capacity and low inflation pressure with a broad footprint for gentle ground handling. Both models demonstrated the brand's dedication to proven engineering and high-value performance for contemporary agriculture.

Going forward, the company plans to strengthen its Chinese footprint by collaborating closely with equipment manufacturers, distributors and farmers, deepening understanding of local applications and addressing the evolving requirements of Chinese agriculture.

Roberta D’Agnano, Global Marketing Director Mitas at Yokohama TWS, said, “Entering the Chinese market means bringing the strength of an established international brand to a new customer base. Mitas combines nearly a century of agricultural expertise with proven tyre technology and a clear focus on dependable performance. Our ambition is to establish Mitas as a reliable partner for Chinese farmers, distributors and equipment manufacturers, offering solutions that help them get the most from their machinery.”

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The U.S. Tire Manufacturers Association (USTMA) has published its 2025 End-of-Life Tire Market Report, continuing a biennial series begun in the early 1990s. With over 30 years of figures on tyre generation, destination markets and stockpiles, the study stands as the nation's most thorough accounting of what happens to tyres after they leave the road.

Of the 273 million tyres retired nationwide in 2025, some 79 percent were absorbed by end-use markets. Only lead-acid batteries surpass tyres as a recycled and reclaimed material; paper, aluminium, glass and PET plastic all trail behind. The result is that valuable rubber stays in productive circulation rather than accumulating in landfills.

Abandoned and illegal stockpiles shrank to roughly 42.1 million tyres, compared with about 48 million two years earlier – a 12 percent drop in that span and a 96 percent fall from the billion-tyre high of 1990. Colorado's cleanup effort accounted for much of the gain, eliminating over 12 million tyres, while New Jersey and Pennsylvania recorded large reductions. North Carolina, Tennessee and Delaware cleared their stockpiles entirely, and land disposal declined nearly 11 percent to 779 thousand tonnes.

Tyre-derived fuel stayed the biggest outlet, taking about 1,317 thousand tonnes, with ground rubber just behind at roughly 1,201 thousand tonnes. Cement kilns consumed about 5 percent more, reaching 821 thousand tonnes – 62 percent of all tyre-derived fuel – as carbon-reduction mandates and the fuel's biogenic nature enhance its appeal. Reclamation applications expanded by roughly a tenth.

Most declines arose from forces outside the industry's influence. Pulp and paper mill shutdowns halved nothing less than 40 percent of that outlet, while revised Michigan energy rules trimmed utility boiler demand by about 22 percent. Synthetic turf continues yielding ground to cork, coconut husk and olive pit infill; moulded and extruded goods eased from a 2021 high; and energy price swings have shifted tyre-derived fuel's competitiveness. Exports, however, climbed 270 percent since 2023 – from 253 thousand tonnes to 936 thousand tonnes – making them the third-largest outlet, driven by India's rapid growth and sustained fuel shipments to Japan and South Korea. USTMA urges exporters to confirm that receiving markets are environmentally sound and economically viable.

Near-term investments include Tire Recycling Foundation-backed environmental product declarations, wider chip seal use, advances in dry-process rubber-modified asphalt and pavement funding. Kentucky devoted over USD 1.16 million in 2025 to nine county rubber-asphalt projects, and California opened USD 6.57 million in grants for fiscal 2025–26. Pyrolysis is now quantifiable as it reaches commercial scale, and the Tire Recycling Foundation is growing into a platform for education, research and demonstration. State-level stockpile figures accompany the report on the ELT Report page of the association’s website.

Anne Forristall Luke, president and CEO, USTMA, said, “This report gives a picture of a market in transition. Stockpile cleanup continues, and 79 percent of end-of-life tyres reached end-use markets. At the same time, several domestic markets contracted, and the rise in exports shows strong demand for this material outside the US Together, those trends tell us our markets still depend on a handful of large industrial outlets, and that market development has to be the priority. The data points to where the work is needed, and much of that work is already underway.”

Amelia Chucholowski, Associate Director, Sustainability and Recycling Policy, USTMA, said, “International demand further demonstrates that this material has real value, but our priority is domestic circular end-use markets, because a tire processed here supports a US recycler, US jobs and US infrastructure. That includes ensuring that domestic processors have adequate feedstock. We’re watching it closely and working with our global partners both to understand what’s driving this trend and to report it transparently.

“The work that actually grows these markets is underway right now, and almost none of it shows up in a 2025 market report. Read this report as a snapshot of 2025. What we’re building now will be measured against in the future. State programmes have built one of the country’s great recycling success stories. 96 percent of the tyre stockpiles that existed in 1990 are gone, and the lesson is clear: when states fund their programmes, enforce the rules and invest in markets, results follow. The next chapter is about markets. The more states invest in uses like rubber-modified asphalt, the more tires become roads, products and energy here at home.”

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PRINX CHENGSHAN showcased a lineup of agricultural tyres under its Chengshan brand at the 2026 China International Agricultural Machinery Exhibition (CIAME 2026) in Tianjin on 26 October. The display featured tyre solutions tailored to modern agricultural needs, with emphasis on large-scale field cultivation and fall harvesting applications.

Rising performance demands across smart, high-end and environmentally sustainable farming have prompted the company to steadily expand its research and development investment in agricultural tyre applications. PRINX CHENGSHAN has built a comprehensive portfolio for large agricultural machinery, including tractors and combine harvesters, delivering integrated solutions for varied operating conditions along with service support spanning the entire product life cycle.

The TX600 and TX700 radial tyres, intended mainly for tractors, each offer distinct advantages. The TX600 pairs large tread blocks with a proprietary cut- and puncture-resistant rubber compound, ensuring stable driving, dependable handling and puncture resistance during high-speed transfers between work areas. The TX700 employs a high-strength carcass and belt construction to deliver strong load capacity and traction, even in muddy, difficult fields.

For combine harvesters, the TX2000 raises load capacity by 20 percent through high-flexion characteristics, while its low inflation pressure and larger contact patch lessen soil compaction, reconciling efficient operations with farmland protection. The TB500 bias-ply tyre, a notable addition to the tractor range, features a deep tread and large, robust blocks for excellent traction, wear resistance and puncture resistance, sustaining stable, slip-resistant performance in mud and gravel.

Looking ahead, PRINX CHENGSHAN plans to continue advancing agricultural tyre innovation, targeting the evolving requirements of modern equipment and practical field challenges. The company aims to collaborate closely with partners throughout the agricultural machinery supply chain to enhance the quality and efficiency of modern farming and support a stronger agricultural sector and greater food security in China.

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