Find the Perfect Tire Specifications & Performance Metrics
Welcome to Tire & Driver. We provide expert tire reviews, detailed load & speed rating decoders, and interactive calculation tools to help you optimize your driving performance and safety.
Our Interactive Tire Calculators
Tire Size Calculator
Compare two different tire sizes instantly to check variance in diameter, width, sidewall height, and circumference.
Open Calculator ➔Speed Rating Converter
Decode your tire’s speed rating letter (like H, V, or W) into actual maximum safety speed limits in MPH and KMH.
Open Converter ➔DOT Date Decoder
Check the exact manufacturing date and determine the current age of your tires using the 4-digit serial DOT code.
Decode Now ➔Tire Load Index Calculator
Find out exactly how much maximum weight capacity your vehicle’s tires can safely carry based on the load index number.
Check Load Capacity ➔Latest Automotive & Tire Guides
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June 16, 2026
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Why Trust Tire & Driver?
At Tire & Driver, we believe tire information should be simple, accurate, and easy to understand. That’s why we focus on providing clear answers backed by reliable research and real-world automotive knowledge.
Whether you’re checking tire sizes, comparing load ratings, understanding speed ratings, or looking for the right fit for your vehicle, our goal is to help you make informed decisions with confidence. Every guide, chart, and tool is created with accuracy and practicality in mind, so you can spend less time guessing and more time enjoying the road.
We’re committed to delivering trustworthy information that helps drivers choose the right tires, maintain their vehicles properly, and stay safe behind the wheel.