Expert Auto Parts & Tire Guides

Tire Sizes: Your Guide for SAE to Metric Tire Size Conversion - Complete guide from Autrex, Canada's trusted auto parts source.

Complete guide to tire load ratings including load index charts, load range explained, and how to choose the right load rating for your vehicle.

Learn how to read tire date codes (DOT codes), understand tire age, and know when it's time to replace old tires for safety.

Learn what a bolt pattern is, why it matters for wheel fitment, common bolt patterns by vehicle, and how to find yours.