Tire Guides Learn about tire sizes, ratings, and maintenance

How to Read Tire Size

Visual guide to understanding every number on your tire sidewall — P225/65R17 102H decoded.

Tire Speed Rating Chart

Complete chart of speed rating symbols from L (75 mph) to Y (186 mph).

Tire Load Index Chart

Load index numbers 60-130 with weight capacities in lbs and kg.

Tire Size Chart

Complete specifications for all standard tire sizes with sorting and filtering.