ACC Tyre Pressure Calculator

Tyre Pressure Formula:

\[ P = \frac{W \times F}{A} \]

Vehicle Weight:

Additional Load:

Tyre Contact Area:

sq m

Safety Factor:

Recommended Tyre Pressure:

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1. What is an ACC Tyre Pressure Calculator?

Definition: This calculator determines the optimal tyre pressure based on vehicle weight, additional load, tyre contact area, and safety factors.

Purpose: It helps maintain proper tyre pressure for safety, fuel efficiency, and tyre longevity in ACC vehicles.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ P = \frac{(W + L) \times F}{A \times 4} \]

Where:

\( P \) — Tyre pressure (kPa)
\( W \) — Vehicle weight (kg)
\( L \) — Additional load (kg)
\( A \) — Tyre contact area (sq m per tyre)
\( F \) — Safety factor (typically 1.2)

Explanation: The total weight (vehicle + load) is multiplied by safety factor, then divided by total contact area of all four tyres.

3. Importance of Proper Tyre Pressure

Details: Correct tyre pressure ensures optimal handling, braking performance, fuel efficiency, and prevents premature tyre wear.

4. Using the Calculator

Tips: Enter vehicle weight (empty weight), any additional load, tyre contact area (default 0.025 sq m), and safety factor (default 1.2). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical tyre contact area?
A: For passenger vehicles, it's typically 0.025-0.030 sq m per tyre when properly inflated.

Q2: When should I adjust tyre pressure?
A: When carrying heavy loads, towing, or when ambient temperature changes significantly.

Q3: What's the purpose of the safety factor?
A: It accounts for dynamic loads during acceleration, braking, and cornering.

Q4: How often should I check tyre pressure?
A: At least monthly and before long trips. Check when tyres are cold.

Q5: What if my vehicle has different front/rear pressures?
A: Calculate separately for front and rear axles if weight distribution isn't 50/50.