Complete PCD & Tire Size Guide

Welcome to the complete Siyaraxess guide dedicated to wheel bolt patterns and tire sizes.

Whether you are replacing your wheels or simply checking compatibility, this guide explains everything you need to know.

What is a PCD (Bolt Pattern)?

The bolt pattern (PCD) is the diameter of the imaginary circle passing through the center of the wheel mounting holes.

Search by Car Brand

Understanding Tire Sizes

A tire size such as 225/45 R17 indicates the tire width, aspect ratio, radial construction and wheel diameter.

Search by Tire Size

What is ET Offset?

ET offset is the distance between the wheel mounting surface and the centerline of the wheel.

What is Center Bore?

The center bore allows the wheel to fit perfectly on the vehicle hub.

Wheel Nuts and Bolts

Always use the correct thread size, seat type and bolt length recommended by the manufacturer.

Torque Specifications

Correct wheel torque is essential for safe driving.

Find Your Vehicle Specifications

Use Siyaraxess tools to instantly find the correct wheel and tire specifications.

Search by Car Brand   Search by Tire Size   Search by Bolt Pattern

Frequently Asked Questions

Can I install wheels with a different bolt pattern?

Only by using certified wheel adapters.

How do I know the correct tire size?

Check the manufacturer specifications or use our search tools.

Is ET offset important?

Yes. An incorrect offset can affect handling and create clearance issues.