The ZR rating indicates that a tire is capable of high-speed operation, while an R rating indicates that a tire is rated for speeds up to 106 mph. ZR tires are typically used on high-performance vehicles, while R-rated tires are more common on passenger cars.
What are the differences between a ZR and your tyre?
What are the differences between a ZR or R tyre? The Z in ZR corresponds to an old label used by manufacturers to indicate that the speed index is higher than V, i.e. 150 mph. Thus, a ZR tyre has a speed index of V, W, or Y. R indicates that the structure is RADIAL.
What is the difference between Zr and VR?
The Z in ZR corresponds to an old label used by manufacturers to indicate that the speed index is higher than V, i.e. 150 mph. Thus, a ZR tyre has a speed index of V, W, or Y. R indicates that the structure is RADIAL. So, VR indicates that the tyre has a RADIAL structure and a speed index equal to V.
What does ZR mean on a car?
Since automobiles have significantly developed and the car speed has exceeded what was thought impossible – 150 mph, the ZR symbol was created to imply the case. ZR is split into Y, W, and the original Z-rated tires. You can double-check with the tire manufacturers when buying new tires to see what appropriate speed rating you need: W, Y, or Z.
What is ZR speed rating?
Historically, the speed rating ZR on a tire meantthat the construction of the tirecould reach of 150 miles or 240 kilometers per hour. What speed rating is Zr? SPEED RATING SPEED SYMBOL SPEED (mph) ZR* W 168 Y 186 (Y) Above 186
What does H mean on a tire?
“H” represents the speed rating, which is how fast the tires can go based on their load capacity. This rating ranges from A – Z. “H” indicates a speed rating of up to 130 mph.
What does h mean in a tyre rating table?
As with the load index, this letter references a look-up table which indicates the maximum permissible speed of a tyre. In this example, “H” means the vehicle has a maximum speed of 130mph under the maximum load. “Although a speed rating table references the maximum speed a tyre can move under load, you should not use this as a threshold.
What is the difference between H & T tires?
H ranks higher than T in supported speed limits, with a value of 130 miles per hour or 210 kilometers per hour. You will spot tires with H on the sidewall on sedans, SUVs, and crossover SUVs. Such vehicles have a high horsepower, which translates to more speed. You will also see them on luxury vehicles.
Where are H tires on a car?
You will spot tires with H on the sidewall on sedans, SUVs, and crossover SUVs. Such vehicles have a high horsepower, which translates to more speed. You will also see them on luxury vehicles. According to automobile pundits, H tires are on the lower end of sports cars.
Are H rated tires safe?
Opting for H-rated tires is fine – provided that you keep to the 130-mph top speed limit instead of the 149-mph limit supported by a V-rated tire. To add, make sure to use the same speed rating on all fours for best performance. As a precaution, never opt for tires with a speed rating two tiers lower than the original requirement for your vehicle.
What does P mean on a tire?
Passenger Tire
P identifies your tire as a Passenger Tire. The P stands for PMetric. If your tire size starts with LT rather than a P than it identifies the tire as a Light Truck tire.
What does p mean on a car tire?
Most car tires have the letter “P” at the front of the tire size. This letter signifies that it is a P-Metric tire designed for the standards of passenger vehicles. If you see the letters “LT” instead, it means Light Trucks. Tire manufacturers design these for the higher inflation needs required by some trucks.
Are Lt tires P Metric?
Tire sizes that have a “p” in front of the numbers in the size description, or no letter at all, are p-metric. If there is an LT in front of the size, then it is an LT tire. Which tire type is right for you depends on how you use your vehicle. Occasionally tires have a “p” listed in front of the tire size.
What does the first letter in a tire size mean?
The first character (s) in a tire size designate the tire’s class. In this example, “P” indicates that the tire is a passenger car tire. An “LT” before the tire size designates a light truck tire, and no letter before the size indicates that it is a European metric tire.
How do you know if a tire is a passenger car?
The first letter in the tire code lets you know the type of vehicle the tire is intended for. The most frequent type is P for passenger car, followed by LT for light truck. 2. Tire Width The three-digit number immediately following the vehicle type letter (s) tells you how wide your tire is.
Which is better D or R tires?
A radial tire flexes more than a bias tire, giving it better ground contact, traction, stability, and tread wear. A radial tire will normally run cooler than a bias ply tire, especially when the tire is under a load. A tire that runs cooler will last longer. For those reasons I would recommend an R tire over a D tire.
What does R Mean on a tire?
R indicates the construction used within the tires casing. R stands for radial construction. B means belted bias and D stands for diagonal bias construction. 17 The last dimension listed in the size is the diameter of the wheel rim, which is most often measured in inches. What’s the difference between 205 and 235 tires?
Are radial tires better than bias ply?
Radial tires are preferred over bias ply, but if the rest of your tires are bias ply and now you have a single radial you would want to strongly consider having all tires match. The main difference between a radial ply and a bias ply tire is how the tire is constructed.
Do I need different wheels for radial tires?
The same wheels can be used for both bias and radial tires. You do not need different wheels for radial tires. The tire you have now that is labeled ST205/75D14 is a bias tire because the D inside the tire size means diagonal or bias ply construction. A radial trailer tire will be labeled as ST205/75R14.
What is a D rated tire?
D-rated tires are classified under load range D. Built for light trucks, they have a maximum pressure of 65 PSI (450 kPa). They also have an 8 ply rating which enables them to be inflated and maintain their round shape. D-rated tires only provide more capacity if they are inflated to the higher-rated design pressure.
What is 97w on a tire?
The letter W denotes the maximum speed rating, which translates 168 mph—not something intended for mom’s minivan. See our list of speed ratings below, which range from a low of “L” (just 75 mph for some off-road tires) to a high of Y (186 mph).
What does 97W mean on a tire?
The “97” represents the “ Tire Load Index ,” while the “W” represents the speed rating. Tire load indexes are denoted using numbers (from “0” to “150”), while speed ratings are represented with letters (from letter “L” to “Z”). Your 97W tire can carry a maximum of 1,609-pound weight and a maximum speed rating of 168 miles per hour.
What does a W tyre rating mean?
Essentially, it means that your tyres will be able to handle a specific maximum speed while carrying a load. Typically, tyres with a W rating can handle a maximum speed of 168 mph. However, it is important to keep in mind that your tyre rating does not necessarily indicate the top speed that your vehicle is cable of reaching.
What does 95 mean on a tire?
The next number ( 95) is the Load Index. Load Index shows the maximum load that the tire can support when inflated properly. You can also find the maximum load on the tire sidewall in both LBS pounds and KG kilograms. The last letter ( H) identifies the Speed Rating. The speed rating tells you the maximum speed capability of a tire.
What does p235/50zr18 97W mean?
On this page you will find a detailed explanation of the P235/50ZR18 97W tire code. This number indicates the tire has a width of 235 millimeters. This number means that your tire has an aspect ratio of 50 %. In other words, your tire’s sidewall height (from the edge of the rim to the tire’s tread) is 50 % of the width.
What does 96W mean on a tire?
are rated to carry more weight than yours
A: Weight limit and speed rating. 96W means they are rated to carry more weight than yours.
What does 96 mean on a tire?
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. But what about that “Z” rating mentioned earlier?
What does 94h mean on a tire?
In this example, 94H is the service description, with the 94 indicating load index, and the H indicating speed rating. You can also find this information printed on the sidewall of all tires. How is tire speed rating established?
What does P245/45R18 96W mean?
On this page you will find a detailed explanation of the P245/45R18 96W tire code. This number indicates the tire has a width of 245 millimeters. This number means that your tire has an aspect ratio of 45 %. In other words, your tire’s sidewall height (from the edge of the rim to the tire’s tread) is 45 % of the width.
What does r19 mean on a tire?
The numbers in the tire size refer to its width, aspect ratio, and wheel diameter. “275/35R19″ means the tire is 275 mm wide, has an aspect ratio (that is, the width divided by the height) of 35%, and fits on a 19” wheel.
What does 19 mean on a tire?
This means the tire is a run flat and can be driven at slower speeds for a short distance after a puncture — even after a complete loss of air pressure. Typically, the guideline in such scenarios is 50 mph for 50 miles. “19” simply means the tire should be mounted on a wheel with a rim diameter of 19 inches. Luckily, no math is needed here.
What does R Mean on a car tyre?
R – Refers to the method the tyre is produced. The letter “R” is found virtually always on modern cars where it indicates a radial structure with steel wires. The “D” or diagonal structure has now been abandoned and essentially it is only to be found on vintage or special series cars. 15 – This is the diameter of the rim.
What does 255-40r19 mean?
Tire sizes are easy to understand once you learn how to read them. On this page you’ll find a color-coded explanation of the 255-40R19 tire code. This number indicates that your tire has a width of 255 millimeters. The tire size was designed to fit rims or wheels that are 19 inches in diameter.
What does B mean on a tyre?
⦾ B: bias belt (sidewalls are the same material as the tread, leading to a rigid ride) This number represents the diameter of the wheel rim that the tyre will be attached to which the tyre will be fit in inches. This measurement is of the diameter of the wheel that the tyre is designed to fit.
What is 100w on tires?
The “18” that follows stands for the rim diameter in inches. The load capacity is identified using a numerical code “100” which in this case signifies 800 kg. With the “W” we come to the speed rating – “W” stands for 270 km/h.
What does 101W mean on a car tire?
101W is a load index rating for passenger car tires. The load index is a numerical code that corresponds to the maximum weight that the tire can support when properly inflated. In this case, 101W means that the tire can support up to 1,377 pounds at its maximum inflation pressure.
What does 100y mean on a tire?
When you see “100y” on a tire, it means that the tire is designed for use on passenger cars with a maximum speed rating of 186 mph. The “y” in this case stands for “sspeed symbol,” which is assigned by the manufacturer based on the results of tests conducted on the tires.
What does 100W XL mean?
100w XL means that the tire is extra load, and can handle up to 100 pounds per square inch. This is important to know because it means that the tire can handle more weight than a standard tire. This is especially important for people who are carrying heavy loads, or who are driving in conditions where the roads are likely to be wet and slippery.
What does 112v mean on tires?
The numeric load index code 112 represents the maximum load carrying capacity for single wheel use and 109 represents maximum load carrying capacity for the dual wheel use. The first number 112 denotes a tire’s ability to carry approximately 2,470 lb (1120 kg).
What is a tire speed rating code?
A chart denoting tire speed rating codes is an essential reference when buying new wheels for your automobile. 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. For example, in the code – P215/60R16 100H, H denotes the speed rating and 100 is its load rating.
What is a V rated tire?
Here, the tire would have a speed rating of V. V-rated tires can be driven at 149 MPH. 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.
How much weight can a 117 pound tire handle?
Instead, you need to reference a chart that shows you what the load index rating means. As an example, a load capability of 117 means that the tire can handle 2,833 pounds of weight. Most passenger vehicles use load indexes ranging from 70–125. See load index chart 7. Speed Rating
What does 91 mean on a tyre?
91 – This is the load index, or the maximum carrying capacity of each individual tyre (provided that the inflation pressure is correct). In our case we have a capacity of a little under 500 kg. The weight that a rear tyre can handle is indicated in pounds. H – Finally we have the speed index.
Can I use R tires instead of ZR?
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.
What is the difference between Zr and R tires?
Hopefully, our article helps you figure out the definition of ZR tires and the difference between ZR and R tires. Simply put, the symbol R indicates both the radial construction and the speed certified for 106 mph, while ZR tires used to be known as the over 149 mph speed rating tires.
What is the difference between 91Y and ZR?
91Y is the load rating, ZR is the speed rating, do not use a R rated tyre. Speed rating is identified as a part of the tire’s sizing or service description. For tires having a maximum speed capability above 240 km/h (149 mph), a “ZR” may appear in the size designation.
How do you know if a tire is ZR 19?
After all, it’s difficult to match tires when different companies have labeled the same kind of tire somewhat differently. In a label of “ZR 19”, the Z refers to the speed rating. All tires that go above 186 mph are required to have a Z speed rating. In other words, this is a quick way to tell that the tire can go above 186.
What does XL mean on a tyre?
Extra Load
Generally speaking, the tyre name XL is used for heavy duty tyres. However, the labelling varies between tyre manufacturers. Sometimes you might have XL tyres that are also labelled “reinforced” (RF or RFD), or models labelled EL (Extra Load).
What are XL tyres?
The acronym XL stands for Extra Load. But it doesn’t apply to cars carrying a heavy load ‑ although they’ll probably need XL tyres. It refers to the weight of the vehicle the tyre will have to support. It’s worth checking whether your car needs these.
Why do XL tyres need higher air pressure?
The load capacity of a reinforced tyre also decreases with decreasing air pressure, so XL tyres need higher air pressure. This is the only way to ensure a higher load-bearing capacity. The stipulated tyre speed rating and load index of your XL tyres can normally be found in the last characters on the sidewall.
Can You exceed the maximum load rating on XL tyres?
It’s worth noting, however, that you should never exceed the maximum load rating for your vehicle – regardless of the maximum load rating of the tyres fitted. What’s the difference between XL tyres and Runflats?
What is the difference between xL and extra load tires?
XL Tires are long-lasting load tires, XL best tires for heavy loads. Extra Load tires have better damage resistance. In the normal world, XL means extra-large. However, in the tyre terminology, XL means ‘Extra Load.’
What does 92y mean on a tire?
“Y” is the highest rating and it means the tire can handle speeds of up to 186 mph. “S” is the lowest speed rating, which means the tire is safe for up to 112 mph. “Z” used to be the highest rating for speeds over 149 mph.
What does 92 mean on a tire?
The 92 represents the maximum load the car can carry. The range of load ratings is vast and each number corresponds to a chart that shows how many pounds a single tire can carry. In this case, the 92 means it can support 1,389 pounds. The Y is the speed rating, or the maximum speed the tire was designed to withstand and maintain.
What does 96 y mean on a tire?
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. But what about that “Z” rating mentioned earlier? “Z” means that the tire has been tested over 149 mph, but doesn’t indicate how far over.
What is a tyre load rating?
The tyre load rating or load index (in our example: 91) is a code which corresponds to a maximum load (in kg) that can be carried by a single tyre. The tyre speed rating (in our example: V) is a code which corresponds to the maximum speed at which a tyre can carry its maximum load.
What does 94V mean on a tire?
LOAD INDEX AND SPEED RATING
LOAD INDEX AND SPEED RATING Example: P225/60/R16 94V. The load index and speed rating, or service description, are the numbers that follow the tire size. In the example above, the first two digits (94) represent the tire’s load index and the single letter (V) identifies the tire’s speed rating.
What does 94 mean on a tire?
94 – The load index tells you how much weight the tire can support when properly inflated. Load indexes typically range from 70 – 126, with each numeric value corresponding to a certain carrying capacity. The higher toe tire’s load index number, the greater its load carrying capacity.
What does the V in 93v vs 94v tires mean?
Continuing with our comparison, the V in the 93V vs 94V tires indicates the tire’s speed rating. The speed rating shows the maximum speed the tire can safely maintain over time. A tire with a V speed rating can maintain an optimal speed of 149mph.
What does 94 in 94v mean?
The first 2 numbers tell the load rating, for example, the 94 in 94V means that the tyre has a load carrying capacity of 670 kg, i.e., it is a heavy duty tyre used in heavy duty vehicles. The last letter tells about the speed rating, for example the V in 94V means that the tyre has a max speed limit of 240 kmph. Looking to beat market trends?
What is a 93 load index tire?
A load index of 93 means the tire can support up to 1,389 pounds. A load index of 94 means the tire can support up to 1,455 pounds. So, if you’re looking for a tire that can support a heavy load, you’ll want to choose a tire with a higher load index. As for speed ratings, a tire with a rating of “V” can travel up to 149 miles per hour.
