1. What is Tyre Size Conversion?

Tyre size conversion allows you to calculate equivalent tyre sizes when making adjustments to your vehicle's wheels. It helps maintain proper speedometer accuracy and vehicle performance.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Original\ Size \) — The current tyre size designation (e.g., 205/55R16)
• \( Adjustment \) — The numerical change you want to apply to the size

Explanation: The calculator helps determine compatible tyre sizes when making changes to your vehicle's wheel setup.

3. Importance of Correct Tyre Sizing

Details: Using the correct tyre size is crucial for maintaining proper speedometer accuracy, vehicle handling, and safety. Incorrect sizes can affect ABS systems and vehicle stability.

4. Using the Calculator

Tips: Enter your current tyre size in standard format (e.g., 205/55R16) and the adjustment value you're considering. The calculator will show the equivalent size.

5. Frequently Asked Questions (FAQ)

Q1: How much can I change my tyre size?
A: Generally, you should stay within ±3% of the original diameter to maintain proper vehicle function.

Q2: What do the numbers in a tyre size mean?
A: A size like 205/55R16 means 205mm width, 55% aspect ratio, R for radial construction, and 16-inch rim diameter.

Q3: Will changing tyre size affect my speedometer?
A: Yes, larger tyres will make your speedometer read slower than actual speed, while smaller tyres will make it read faster.

Q4: Can I use this calculator for winter tyres?
A: Yes, but ensure any seasonal tyre changes maintain proper clearances and diameter.

Q5: Where can I find my current tyre size?
A: Check your vehicle's door jamb sticker, owner's manual, or the sidewall of your current tyres.