* W- and Y-speed ratings are subcategories of the Z-speed rating. ** Per the TR&A 2007 yearbook, for tires having a maximum speed capability above 240 km/h (149 mph), a ZR may appear in the size designation. For tires having a maximum speed capacity above 300 km/h (186 mph), a ZR must appear in the size designation A tire's speed rating is an indication, expressed as a letter code on the tire sidewall, of a speed the manufacturer expects the tire to be able to sustain over a long period of time without coming apart. This is good information to have for a number of reasons, some of which actually include the likelihood of you ever being able to sustain even the lowest of speeds that passenger car tires are rated for. Currently, there are more than a dozen speed ratings for tires offered in the United States. They range from “L,” which dictates a maximum speed of 75 mph, to “ (Y),” which is for speeds in excess of 186 mph. These speed ratings are valid only when the tire is undamaged, properly inflated, and not overloaded. Speed rating on tires is expressed by a letter from A to Z (the speed symbol), ranging from 5 km/h (3 mph) to above 300 km/h (186 mph). For e.g. the letter "T" defines the maximum speed limit at 190 kph/118mph (Please see the tire speed rating chart below). Tire Speed Rating. To find your tire speed rating to reference the single letter at the end of your tire size — this will be where you’ll find the speed rating for all tires manufactured since 1991. The most common tire speed ratings are L, M, N, P, Q, R, S, T, U, H, Y and (Y) — letters that designate speeds ranging from 75 to above 186 miles per hour.
Load index and speed rating are sometimes not mandatory for flotation sizes, but must be for any tire approved for street and A higher speed rating usually means you will have better control and handling at higher speeds - and that the tire can take the extra heat. As a general rule, tires
6 Mar 2019 There is also one special ultrahigh speed rating: If a Y-rated tire has parentheses around its service description, say, "(93Y)," that means the tire is
Tire speed rating can be found on the actual tire, and it's relatively easy to find, needs a new set of tires, or you have questions for us about tire speed rating, A tire (American English) or tyre is a ring-shaped component that surrounds a wheel's rim to Grooves run circumferentially around the tire, and are needed to channel away water. Lugs are The rating is based on the weight and speed that the tire can handle without overheating and causing it to deteriorate prematurely.
What does "Up to 99 mph" really mean? Tires with a Q speed rating can safely sustain speeds of up to 99 miles per hour. The tire may be able to reach higher Displayed on the sidewall of the tyre, the speed rating is based on tests run by engineers and shows the Blackcircles.com - Click and Fit Tyres Speed ratings are based on tests in which engineers run the tyre at 6.2 mph steps, in 10 minute 23 Oct 2016 The speed rating tells you the speed the tire can safely maintain over time. A higher There are some aspects which you need to consider.