Speed rating chart tires

Read on for why. Tire Speed Rating Chart.

The next rating is T and then U and so on with maximum speeds increasing with each letter.

Speed rating chart tires. Tire Speed Rating Chart For tires with a maximum speed capability higher than 240 kmh 149 mph a ZR may appear in the size designation. Tires with a maximum speed capability higher than 300 kmh 186 mph require a ZR in the size designation. Consult the tire manufacturer for maximum speed when there is no service description.

A tire rated with the letter Z in the tire size designation ie. P27540ZR17 93W or 27540ZR17 93Y is the tire which have a maximum speed capability above 240 kph149mph. Tires having a maximum speed capability above 300 kmh 186 mph must have Z in the size designation and the service description must include Y in parenthesis ie.

P27540 Z R17 93Y. Tire speed ratings range from A the lowest to Y the highest. But the chart is not completely in alphabetical order.

For example H is between U and V with the common perception that H stood for high performance at one time. As manufacturers continue to add speed to their vehicles tire speed ratings evolve to match the speeds. Tire Speed Rating Chart.

To get a clearer understanding of tire speed rating heres a chart to help you. Notice that Z comes right before W and Y. Thats because Z-speed tires were meant to represent speed ratings higher than 149 mph.

W and Y-speed tires were innovated later as cars got faster with the help of technology. W- and Y-speed ratings are subcategories of the Z-speed rating. Per the TRA 2007 yearbook for tires having a maximum speed capability above 240 kmh 149 mph a ZR may appear in the size designation.

On the sidewall of every tire youll find one of these speed rating codes. M Up to 81 mph. N Up to 87 mph.

P Up to 93 mph. Q Up to 99 mph. R Up to 106 mph.

S Up to 112 mph. T Up to 118 mph. H Up to 130 mph.

V Up to 149 mph. W Up to 168 mph. Y Up to 186 mph.

Z See Below 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. An H speed rating indicates the tire is approved for speeds up to 130 mph 210 kmh under optimal conditions.

An H speed rating is at the low end or at the start of the performance tire speed ratings. H speed rated tires are ideal for sport and luxury coupes and sedans but not typically considered full-fledged performance vehicles. The first two digits 87 S represent the tires load index and are followed by a single letter 87 S identifying the tires speed rating.

Using a P19560R15 87S tire size as our example the 87S at the end of the size represents the tires service description. A service description identifies the tires load index and speed rating. TIRE RATINGS CHARTS REVIEWS 2432121272 Miles of Real-World Tire Data Reported Since 1997 Our ratings and reviews submitted by consumers just like you uncover trends in performance satisfaction or dissatisfaction and will help you pinpoint whats right for you.

See Tires for My Vehicle Share. Each letter in the speed rating represents a maximum speed based on a standard chart. The main things to know.

Generally the higher in the alphabet a tire is rated the better it will manage heat and faster speeds. Theres an exception for the H rating. Read on for why.

Common Tire Speed Ratings Chart The following speed ratings are those youre most likely to encounter for ordinary vehicles. They begin with a maximum speed of 118 mph 190 kph and increase from there. Indicated by a letter each rating corresponds to a specific speed.

Definition of Tire Speed Ratings. A tires 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 apartThis 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. Speed Rating Today the only tires that continue to include the speed rating in the tire size P22550ZR16 are Z-speed rated tires.

In this case following the two digits used to identify the aspect ratio are the letters ZR to identify the tires speed rating Z and its internal. A common starting place for passenger car tires is an S rating meaning that maximum speed capability of the tire is 112mph. The next rating is T and then U and so on with maximum speeds increasing with each letter.

All ratings cover speeds that are well above legal limits. Tire Speed Rating Chart. Tire speed ratings first originated in Europe in the 1960s as a way to make sure increasingly faster vehicles were equipped with appropriate safe tires.

These early speed ratings set the foundation for the current speed rating system used by the DOT and tire manufacturers. Prior to 1991 tire speed ratings were shown inside the tire size before the R construction type. The available codes were SR 180 kmh 112 mph HR 210 kmh 130 mph VR in excess of 210 kmh 130 mph.

Tires with a speed rating higher than 300 kmh 186 mph are indicated by a Y in parentheses. Tire Speed Rating Chart In this page you will find tire speed rating chart with maximum speeds in MPH and KMH tire pressure and also tire load adjustments for high speed driving. Recommended Tire Load Capacity Adjustments and High Speed Tire Pressure.

Here is the complete speed rating chart which interprets the alphanumeric code specified on the car tire wall into the maximum speed limit specification in miles per hour mph and kilometers per hour kmh. Would you like to write for us. Well were looking for good writers who want to spread the word.

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