How to Read Speed Rating, Load Index & Service Descriptions and more I was trying to figure all that stuff out by myself but this guide helped alot. How to Read Speed Rating, Load Index & Service Descriptions Other good guides - Air Pressure - Correct, Underinflated and Overinflated Air Pressure vs. Dry Performance Air Pressure vs. Wet Performance Air Pressure, Temperature Fluctuations Air Pressure/Load Adjustment for High Speed Driving Air Pressure: When and How to Set Alignment Breaking In Your Tires Calculating Tire Dimensions Checking Tire Inflation Pressure Determining the Age of a Tire Diameter Comparison of Light Truck Tire Sizes How Do I Compare Price vs. Value? How to Read Speed Rating, Load Index & Service Descriptions Load Range/Ply Rating Identification Match Mounting to Enhance Tire & Wheel Uniformity Load Reduction of Euro- and P-Metric Tires on Light Trucks Measuring Tire Tread Depth with a Coin Mounting and Balancing P-Metric and Euro Metric Tire Sizing Run-Flat Tires Selecting the Right Tires Sidewall Markings Specific Mileage Warranties The Plus Concept Tire & Wheel Owner's Manual Tire & Wheel Package Installation Instructions Tire & Wheel Package Ride Uniformity Confirmation Tire Pressure Monitoring Systems Tire Rotation Tire Size Conversion Chart Tire Size Information Tire Warranties Uniform Tire Quality Grade (UTQG) Standards Where to Install New Pairs of Tires? .... I looked around and couldn't find this info or a link to such info so if I overlooked it and made a double post I apologize.