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💨 TYRE FLAT — Air leaking!
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🚲 Bicycle Tyre Investigation

Why did my tyre go flat? Explore how temperature, punctures, slow leaks, and over-inflation affect tyre pressure using the Ideal Gas Law.

Tyre Pressure
48 PSI 0 80
Gauge PSI 48.0
Temperature 20°C
Abs. Pressure 62.7 psi
Status OK
🟢 Fully Inflated
Controls
🌡️ Temp 20°C
💨 Pump 48 psi
Scenarios — Try These
🌙 Overnight Drop Cold night shrinks gas
☀️ Hot Day Burst Heat expands, risk blowout
🔩 Nail Puncture Fast leak through hole
🔧 Faulty Valve Slow seep over hours
💥 Over-inflated Hard ride, burst risk
🛞 Under-inflated Pinch flat, sluggish
What's Happening
🔬 Tyre is properly inflated. Air molecules push outward evenly — keeping the tyre firm and round.
Visual Key
Escaping air
Air molecules
Puncture site
Pressure normal

💡 Ideal Gas Law (Gay-Lussac): At constant volume, pressure ∝ absolute temperature (Kelvin).

P₁/T₁ = P₂/T₂

A tyre inflated at 20°C (293 K) to 48 psi drops to ~44 psi when cooled to 3°C overnight — a 4 psi loss with no leak at all!