#Tire speed rating manual
Please consult your owner's manual for specific warnings, notices, and other advice relative to the subjects addressed. Speed ratings for tyres range from A (the lowest) to Y (the highest), however, they dont always follow alphabetically as H is rated between U and V.
All ratings start from the letters A to Z where Z has the fastest speed rating. It all depends on your preference and application. Large commercial trucks may have a lower speed rating, while sports cars and performance-inspired vehicles run on tires with a high-speed rating. Tire load index is an assigned number that corresponds to the maximum weight that a tire can support when properly inflated. As a driver, there is no right tire rating for you. The operation of your vehicle, or the replacement of your vehicle's equipment, may be different than for a typical vehicle. The tire rating tells you the maximum speed where the tire can safely sustain the thermal and contact forces generated during driving. It is important to note that the tyres rating is based on the. Important Notice: The information provided above is derived from sources deemed reasonably reliable. Tyre speed rating (TSR) is the maximum, approved speed that the tyre can be driven at. For safe driving, keep your speed at the posted speed limit - or below, when road conditions or the weather aren't ideal. If you're carrying a heavy load, have a tire that's been patched after a puncture, or low on air, your tire's speed capacity will be much reduced. The speed rating is a letter assigned to the wheel to identify the maximum speed at which the tire is rated as running safely. It's based on lab simulations and doesn't account for real-life factors that determine true tire capability: Are the tires fully inflated? Is your vehicle properly aligned? How hot is the road? Have you ever had a flat repaired? What's the age and state of the tread?ĭon't use the rating as a guideline for the top speed you can drive. Tire speed rating is not like a speed limit posted on highway signs.
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