Calculate differences in both tire size and wheel offset positioning for new wheel and tire setups. View the results with our visualizer and compare key measurements for accurate fitments.

Compare wheel offsets, backspacing, and tire dimensions side-by-side. Use the offset calculator, visualizer, and chart to plan safe fitment.

Instantly calculate wheel offset and backspacing in inches or millimeters. Use our free fitment tool with live visuals to find the perfect setup for your ride. Powered by WheelsASAP — the …

Use our free wheel backspace offset calculator to compare tire sizes, offsets, and clearances before upgrading your wheels or rims.

Our convenient, online Wheel Visualizer tool takes the guess work out of how a new set of aftermarket wheels or tires will look on your vehicle. It allows you to instantly preview …

Use the Wheel Offset Calculator to convert wheel offset, rim backspacing, measure poke and inner wheel clearance, and preview stance changes for accurate wheel, rim, and tire fitment.

Use this calculator to determine the effect of changing your wheel width and offset. First enter your current wheel width and offset. Then enter your new wheel width and offset. Next click …

There is no reason to guess how a new set of custom wheels or tires will look on your vehicle — with the help of our convenient, online Wheel Visualizer tool, we can show you instantly.

Use our calculators to find your wheel offset and backspacing, know if your tires will fit, convert tire sizes and bolt patterns from metric to imperial, and more at Custom Offsets.

Use our comprehensive online wheel size calculator to visualise different alloy wheels and tyre combinations. Calculate your offset, compare tyre stretch, rolling radius and more.