Guides & Tools for Modifying Your Car

Everything you need to know about choosing, sizing, and installing aftermarket wheels. From understanding offset and backspacing to selecting the right finish for your build.

Stop falling for tire marketing. Learn the real differences between tire brands, tread compounds, and what actually matters for your driving style and budget.

Use our advanced wheel design filter to find your perfect style. Filter by spoke count, design type, and aesthetic to discover wheels that match your vision.

Browse our complete collection of in-depth guides covering wheels, tires, fitment, and everything you need to build your dream car.

Compare wheel and tire specs side-by-side. See exactly how offset, width, diameter, and tire size changes affect your fitment before you buy.

Compare two tire sizes to see how they differ in height, width, and diameter. Perfect for finding the right tire upgrade while maintaining accurate speedometer readings.

Interactive calculators to help you dial in your perfect wheel and tire setup. Compare fitments, visualize changes, and make confident decisions.

Flexible financing options to help you get the wheels, tires, and parts you want now. Learn about Katapult and Affirm payment plans with transparent terms.