Tire Size Calculator: Optimize Your Vehicle's Performance

Upgrading your tires or simply curious about different sizes? Our comprehensive tire size calculator helps you compare two tire sizes and understand their impact on your vehicle's performance, speedometer accuracy, and overall handling.

Tire 1: Current or Base Size

Enter the specifications of your current tires or the base size you want to compare against.

Width (mm)

Aspect Ratio (%)

Wheel Diameter (inches)

Load Index

Tire 2: Alternative or New Size

Input the details of the new tire size you're considering or want to compare.

Width (mm)

Aspect Ratio (%)

Wheel Diameter (inches)

Load Index

Why Use Our Tire Size Calculator?

Accurate Comparisons: Get precise measurements for sidewall height, overall diameter, and circumference.
Performance Insights: Understand how different tire sizes affect your vehicle's speed and handling.
Speedometer Accuracy: Calculate potential speedometer errors when changing tire sizes.
Load Capacity: Compare the weight-bearing capabilities of different tire options.
Visual Representation: Our interactive tire diagrams help you visualize size differences.

Whether you're a car enthusiast looking to upgrade your wheels or a everyday driver ensuring the right fit, our calculator provides the insights you need to make informed decisions about your vehicle's tires.