Yes, you absolutely can put nitrogen in your tires, and it offers some distinct advantages over regular compressed air.
Many drivers wonder about the best way to keep their tires in top shape. Tire pressure is fundamental to safety and vehicle performance. The question of using nitrogen instead of regular air often comes up.
The Air We Breathe (and Put in Tires)
Let’s start with what’s typically in your tires right now. Standard compressed air, the kind you get at gas stations or most shops, is about 78% nitrogen, 21% oxygen, and a tiny bit of argon, carbon dioxide, and other gases.
This common mix works fine for most vehicles. However, oxygen, a key component, has some specific properties that affect tire longevity and pressure stability over time.
Oxygen molecules are inherently smaller and more reactive than nitrogen molecules. This size difference matters significantly when considering the microscopic porosity of tire rubber walls.
- Oxygen Permeation: Oxygen molecules can seep through the rubber of your tires faster than nitrogen. This leads to a gradual but consistent loss of tire pressure over weeks and months. It’s like a very slow, almost imperceptible leak.
- Internal Oxidation: Oxygen also reacts chemically with the rubber compounds and internal components of the tire, including the crucial steel belts and the inner rubber liner.
Certification: BSc in Mechanical Engineering
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Md Amir is an auto mechanic student and writer with over half a decade of experience in the automotive field. He has worked with top automotive brands such as Lexus, Quantum, and also owns two automotive blogs autocarneed.com and taxiwiz.com.