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Tire Speed Rating Chart.
| SPEED SYMBOLS | ||
|---|---|---|
| H | 210 | 130 |
| V | 240 | 149 |
| W | 270 | 168 |
| Y | 300 | 186 |
What are some speed ratings that are out of place?
Another such quirk is that the letter “H” is out of place. Instead of appearing after “G,” it falls between “U” and “V” as does the speed to which it corresponds. Additional speed rating “anomalies” include the following: “I,” “O,” and “X” speed ratings don’t exist. Likewise, some speed rating charts don’t include the “P” rating.
What is the top speed of a Y rated tire?
Y rated tires have been tested at speeds up to, and in excess of, 186 mph (300 km/h) under optimal conditions. If Y speed rating is indicated without parentheses (as normal), this means the tire is rated up to 186 mph.
What is the speed rating of a car in mph?
In this code specification, the rating is always specified last, next to the load rating. Here 100 is the load rating of the tire and speed rating is ‘V’, which indicates a maximum speed of 149 miles per hour. Here are the most commonly used speed rating codes for cars in Europe and USA.
What is the highest possible speed rating on a speedometer?
Originally, the V category was the highest possible speed rating (more than 130 mph). But as vehicles and tires improved, it became necessary to add more letters to accommodate the faster speeds. The V category changed to 149 mph and the Z speed rating was introduced to cover speeds over 149 mph.
What does 95y on a tyre mean?
The number is the load index. The higher the number, the more weight the tires can handle. In this case, "96" means the tire can handle 1,565 pounds, while the "Y" indicates the tire is rated to be safe at speeds up to 186 miles per hour.
What does 95t mean on a tire?
(95) Load Index The larger the number, the higher the load capacity. This is one of the most important numbers on your tire. To find out what "95" means, you have to look it up on a Load-Carrying Capacity Per Tire chart. Ninety-five indicates a maximum weight of 1,521 pounds.
Can I use ZR tires instead of R?
R indicates that the structure is RADIAL. So, VR indicates that the tyre has a RADIAL structure and a speed index equal to V. There is therefore no difference between a ZR or an R tyre with the same speed index.
Do I need ZR tires?
above 186 mph, a ZR must appear in the size designation, including a Y speed symbol in brackets. *For tires having a maximum speed capability above 149 mph, a ZR may appear in the size designation... above 186 mph, a ZR must appear in the size designation, including a Y speed symbol in brackets.
What does 112t mean on tires?
Though not an absolute, the general rule is: The higher the speed rating, the better the tires will corner and stop, the faster they'll wear out, and the more they'll cost. Common speed ratings on tires are as follows: R=106 (mph) S = 112, T = 118, H = 130, V = 149, W = 169 and Y = 186.
What does 114h mean on tires?
H (Speed Rating): A speed rating of “H” means that this tire is designed to withstand speeds up to 130 miles per hour. In summary, a P255/45R18 103H tire would be a passenger tire with a width of 255 millimeters, a thickness or aspect ratio equal to 45% of the tire height which here is 114 millimeters.
How fast can a ZR tire go?
ZR Designation Tires having a maximum speed capability over 149 MPH may have “ZR” in the size designation. Tires with a maximum speed capability over 186 MPH are required to include “ZR” in the designation. Below are examples of tire sizes with a “ZR” speed rating.
Why do tires say Zr?
The letters ZR on the sidewall relate to a tyre's speed rating, which in this case is 150mph. That means it should not be driven at speeds in excess of 150mph (240kmph) - of course, where such speeds are even legal! Before 1990, ZR was used for high-performance tyres.
What is the difference between an R tire and a ZR tire?
ZR tires were historically known as “performance-rated tires” with a speed rating of more than 149 mph while the letter R on a tire represents both the fact that it is built with a radial construction in mind and the fact that it is speed rated for 106mph.
Are ZR tires run flat?
All ZRtyres locations carry a massive range of Run-flat tyres in stock for all popular makes and model of cars, as well as having the correct tyre fitting and balancing equipment to fit these specialist tyres correctly without damage.
Are ZR tires good for winter?
NO, the rubber will be hard as a rock at low temp, and the rubber compound is hydrophobic, vs. hydrolphilic (I may have that reversed). Summer tires are crap in the winter, winter tires are crap in the summer, all season tires are crap all the time. great post.
What does Zr mean?
ZR shown on the sidewall of your tire is a reference to the tire's speed rating.. Historically, the speed rating ZR on a tire meant that the construction of the tire could reach of 150 miles or 240 kilometers per hour. Today, a tire labeled ZR, has more capabilities than before.
What Is Tire Speed Rating?
A tire’s speed rating indicates the optimal speed that the tire can safely maintain over time. In short, it’s the fastest speed a tire can handle b...
Why Were Tire Speed Ratings developed?
The speed rating system used today was developed in Europe in response to the need to control the safe performance of tires at standardized speeds....
Where Can I Find My Tire Speed Rating?
You can find your tire speed rating in a number of places, typically in the owner’s manual, driver’s side doorjamb, glove box door, and gas tank ha...
What is speed rating?
SPEED RATINGS REFER TO MORE THAN JUST SPEED. Contrary to the name, speed ratings aren’t just about speed. They’re also about ride comfort, wear and cornering ability. Typically, the higher the speed rating, the better the grip and stopping power, but the lower the tread life. You can always increase the speed rating of the tires on your vehicle ...
What does 99 mean on a tire?
99 = 1,709 pounds. A tire with a higher load index than that of the Original Equipment tire indicates an increase in load capacity . A tire with a load index equal to that of the Original Equipment tire indicates an equivalent load capacity. A tire with a lower load index than the Original Equipment tire indicates the tire does not equal ...
What is an H speed rating?
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. H speed ratings are common in the grand touring all-season tire category. W.
What is the speed rating of a tire?
An H speed rating indicates the tire is approved for speeds up to 130 mph (210 km/h) 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. H speed ratings are common in the grand touring all-season tire category.
What is a T rating?
A T rating indicates the tire is approved for speeds up to 118 mph (190 km/h) under optimal conditions. T ratings are most associated with standard touring tires, and everyday passenger vehicles like family sedans and minivans.
What does a Y rating mean on a tire?
Y rated tires have been tested at speeds up to, and in excess of, 186 mph (300 km/h) under optimal conditions. If Y speed rating is indicated without parentheses (as normal), this means the tire is rated up to 186 mph. If the Y speed rating is indicated inside of parentheses, this means that particular tire size and specification has been tested at speeds in excess of 186 mph. A Y speed rating denotes maximum tire performance.
How fast can a Q tire go?
Q tires are approved for speeds up to 99 mph (160 km/h) under optimal conditions. Tires toward the low end of the speed rating range often prioritize a particular function or unique performance over maximum speed rating. Some studdable and studless winter tires, for example, are Q speed rated.
What does a W mean on a car?
A W means the tire is approved for speeds up to 168 mph (270 km/h) under optimal conditions. W speed rated tires land firmly at the performance end of the speed rating spectrum. Ws are suitable for performance coupes and sedans, and even street driven exotic sports cars.
HOW TO FIND YOUR TIRE SPEED RATING
If you’re wondering what tire speed rating your vehicle manufacturer recommends, simply look in the manual. You might also find it in the driver’s side door jamb, the gas tank hatch, or inside the glove box door – anywhere that lists the right tire code for your vehicle.
DETERMINING TIRE SPEED RATING
Speed ratings are the product of laboratory testing – with simulated speeds and loads. To receive any kind of rating, a tire must demonstrate that it’s capable of sustaining a particular speed. Industry standards govern the process of reaching and maintaining a given speed during a test.
TIRE SPEED RATING SYSTEM QUIRKS AND ANOMALIES
Today’s speed rating system uses letters A through Z. Each letter corresponds to a specific speed. In general, that speed goes up as the rating advances alphabetically. For example, a tire rated “L” is good for a lower maximum sustained speed than one rated “N.”
COMMON TIRE SPEED RATINGS CHART
The following speed ratings are those you’re most likely to encounter for ordinary vehicles. They begin with a maximum speed of 118 mph (190 kph) and increase from there.
Where is the speed rating located on a tire?
You can find a tire’s speed rating on the sidewall, where one will typically see a string of numbers and letters. These are several important codes, such as radial construction, aspect ratio, tire load and speed rating. The speed rating is typically the last letter listed on the sidewall (coming after the load index, which is a number).
What do the letters mean?
Speed ratings go from A1 to Y, with A1 having the lowest rating and Y being the highest, but there are some anomalies. There are eight different A ratings. There are no X, O, or I ratings, and H rating is in the “wrong” place. Also, the ZR rating isn’t truly its own rating, but includes both W- and Y-rated tires.
Does tire speed rating matter?
Yes, it matters because your speed rating indicates how much heat a tire can handle safely. Not following those guidelines can lead to faster wear on the tread, decreased steering response, decreased stopping power and poor driving capabilities in colder conditions.
What are the most common tire speed ratings?
Most commuters and consumers will want either an H, S or T tire. Light trucks may need a tire between the N and T ratings. Sports cars may get better handling with a ZR tire.
What is tire speed rating?
Like the load index rating, a tire speed rating is another shorthand way to reference how fast a tire can go in ideal conditions. But rather than numbers, it uses letters in (mostly) alphabetical order. (More on that later.)
Where to find load rating on car tires?
If your car doesn’t have its OE tires, you can find the manufacturer’s recommended load rating in the owner’s manual or the placard on the driver’s side doorjamb. Most tire installers will not sell or install a lower load-rated tire than the OE recommendation due to liability concerns. This is because if you install tires with a lower load index ...
Why are tires with a lower load index rating more likely to overload?
Overloaded tires are more prone to damage, blowouts and premature wear. Read: How to Choose the Right Tires for Your Car.
Can tires go up to a certain speed?
Note: Just because your tires can go up to a certain speed does not mean that your vehicle can nor that it is safe to do so. Please follow all posted speed limits. As mentioned earlier, speed ratings are in mostly alphabetical order, but there are a few anomalies.
What does speed rating mean on a tyre?
The speed rating of a tyre shows you the top speed that the tyre can safely be driven at. It’s a legally approved limit and tyres are only rated after they’ve been tested in a lab. The safest top speed applies as long as the tyre isn’t being driven with too much weight loaded. Often, the tyre speed rating will be a faster speed than your car's able ...
Where to find tyre speed rating?
You can check the tyre speed rating on the sidewall of a car. There's a group of letters and numbers on the side. The final letter is the speed rating. The speed rating letter comes after the load rating. It’s important to look at both together because the speed rating depends on driving with the right load.
Why is it important to choose the right tyre speed rating?
Choosing the right tyre speed rating for your car’s important for the safety of yourself and other road users. If the tyre speed rating’s too low for your car, it might not be able to cope with the heat of high speeds. That could cause the tyre to lose performance and the car to lose control. It could even lead to a tyre blow-out.
Can you use a higher speed rating on a car?
Yes, you can. It’s not against the law to choose tyres with a higher speed rating that your car needs as long as they’re right for your vehicle. Find out more about the legal requirements for car tyres.
Where is the speed rating on a tire?
The speed rating is denoted by an alphabet placed to the immediate right of the load rating, towards the end of a tire’s sidewall code .#N#For example, in the code – P215/60R16 100H, H denotes the speed rating and 100 is its load rating.
Why is it important to have a speed rating on tires?
Choosing tires with the right speed rating ensures proper handling and smooth car functioning. A chart denoting tire speed rating codes is an essential reference when buying new wheels for your automobile.
What is the ISO sizing code for tires?
The ISO Metric sizing system provides an alphanumeric code which is used to determine the rating of a car tire. If you read the code off any car tire, it will look something like ‘P215/70R16 100V’. In this code specification, the rating is always specified last, next to the load rating. Here 100 is the load rating of the tire and speed rating is ‘V’, which indicates a maximum speed of 149 miles per hour.
Can you use different speed tires in a car?
Also, it’s not recommended that tires with different speed ratings be used together in a car, as it can lead to major handling issues.
Do you downgrade the speed rating of your tires?
Note: Never downgrade the speed rating of your car tires. That is to say, never go for new tires with a lower than recommended rating, as it may result into steering difficulties ...
What is load index and speed rating?
The load index and speed rating are for tires that are working adequately. The load capacity designation is for a tire that is inflated at its maximum air pressure. According to information on the Tire Rack website, the speed rating only applies to tires that "have not been damaged, altered, under-inflated or overloaded."
How fast is a Y tire?
A "Y" goes on a tire with top speed capabilities up to 300 kilometers per hour, or 186 miles per hour. These tires are not designed for autos like a family sedan, but for a vehicle with very high speed capabilities, such as an exotic, high-performance car.
What does 96 mean on a tire?
The load index basically shows how much weight a tire can support. A load index of 96 gives the information that the tire can handle a load of 1,565 lbs. Passenger cars and light trucks normally have tires with a load index between 70 and 110.
What does the Y on a tire mean?
The "Y" at the end of the tire information tells the speed rating, or the tire's maximum speed capability. These ratings are initially calculated in kilometers per hour, then converted to miles per hour. A "Y" goes on a tire with top speed capabilities up to 300 kilometers per hour, or 186 miles per hour. These tires are not designed for autos like a family sedan, but for a vehicle with very high speed capabilities, such as an exotic, high-performance car.