Tyre Pressure Formula:
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Definition: This calculator estimates the recommended tyre pressure based on vehicle model and load conditions.
Purpose: It helps vehicle owners maintain optimal tyre pressure for safety, fuel efficiency, and tyre longevity.
The calculator adjusts manufacturer's recommended pressure based on:
Where:
Explanation: The base pressure is adjusted upward for heavier loads to maintain proper tyre contact and performance.
Details: Correct pressure ensures optimal handling, braking, fuel efficiency, and prevents premature tyre wear.
Tips: Enter your vehicle model and current load (including passengers and cargo). Check your vehicle's door jamb or manual for manufacturer recommendations.
Q1: Where can I find my vehicle's recommended pressure?
A: Typically on a sticker inside the driver's door jamb or in your owner's manual.
Q2: How much should I increase pressure for heavy loads?
A: Generally 2-4 psi above normal for full loads, but consult your manual for specific recommendations.
Q3: Should I check pressure when tyres are cold or hot?
A: Always check when tyres are cold (not driven for at least 3 hours) for accurate readings.
Q4: Does tyre pressure affect fuel economy?
A: Yes, under-inflated tyres can reduce fuel efficiency by up to 3%.
Q5: How often should I check my tyre pressure?
A: At least once a month and before long trips.