![]() If you can’t locate it there, check the driver’s side door jamb, gas tank lid, and owner’s manual for more info, or contact the tire manufacturer for specifics! You can find your tires’ speed rating at the end of each tire’s service description or inscribed on the sidewall. Q-rated tires are simply not designed to handle the pressure of going faster than 100 miles per hour for extended periods or distances. ![]() The “Q” means that, in a controlled environment, your tires can safely handle speeds of up to 100 miles per hour.Įven though your car can probably go faster than that, pushing your tires past that limit is not safe. To give you an idea of what speed ratings mean in real life, we’ll provide an example. Speed ratings are measured and certified in controlled, lab-like situations, which are entirely different from the roads and circumstances you drive in every day! In other words, just because your tires are rated for high-speeds doesn’t mean you should push the pedal to the metal every time you hit the road. Tire speed ratings are indicated by the letters A-Z, with A1 tires having the lowest speed capabilities at 3 MPH and ZR having the highest at 149 MPH. Simply put, a tire’s speed rating indicates the range of speeds at which it can safely perform. The tire speed rating system is a way for you to discern what circumstances are right for your tires, and make decisions on which tires are right for your vehicle! What Does Tire Speed Rating Mean? Your tires are designed to perform under certain conditions.
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