32 PSI? The Science Behind Tyre Pressure Nobody Explains

Why does your car recommend exactly 32 PSI? What actually happens when you drive with low or high tyre pressure? In this video, we break down the science behind tyre pressure — from the tiny contact patch between your tyre and the road to rolling resistance, tyre deformation, heat, wet-road grip, tyre wear and the difference between cold and hot tyre pressure. You'll also understand why the pressure written on your car's door sticker is different from the maximum pressure written on the tyre sidewall, whether nitrogen actually makes a difference, why EVs care so much about tyre pressure, and why tyre pressure should be checked when the tyres are cold. This isn't just about putting air in your tyres. It's about understanding the small piece of rubber that connects your entire car to the road. Topics covered: • What tyre pressure actually does • The tyre contact patch • Low tyre pressure and rolling resistance • High tyre pressure and ride/impact behaviour • Tyre deformation and heat • Tyre wear patterns • Hot vs cold tyre pressure • Tyre pressure in rain and wet roads • 32 PSI vs maximum tyre pressure • Nitrogen vs normal air • EV tyre pressure and efficiency • When to check your tyre pressure If you've ever wondered what the correct PSI for your car actually means, this video is for you. #TyrePressure #CarMaintenance #AutomotiveEngineering