sidewall
You can find your car’s tyre size written on the sidewall of your current set of tyres, in your vehicle’s handbook or on a sticker in the door jam or inside the fuel cap door. When buying new tyres you should only go for ones that have these same numbers to ensure a good fit.
What is the width of a tire?
This can also be referred to as the section width. In the tire size, the first three numbers refer to the width of the tire. As an example, if your tire size is P225/65R17, the width of the tire would be 225 millimeters. 3. Aspect Ratio After the slash mark, the next number you will see is the tire’s aspect ratio.
How do I find the tire size?
Find the series of numbers on the sidewall. Tires are manufactured with the tire size printed on the sidewall. The sidewall is the outer wall of the tire, rather than the tread that contacts the road. The size should be printed underneath the tire manufacturer name, just above the rim of the tire. [1] [2]
What do the numbers on a tire mean?
In the tire size, the first three numbers refer to the width of the tire. As an example, if your tire size is P225/65R17, the width of the tire would be 225 millimeters. 3. Aspect Ratio After the slash mark, the next number you will see is the tire’s aspect ratio. The aspect ratio of a tire is the height of the cross-section compared to the width.
What is the most common tyre size in the UK?
In the UK, the most common tyre size is 205/55R16, but there are many different variations. It’s important to check the tyre to ensure you’re purchasing the correct sized model. The first three digits that make up your tyre size relate to the section width. This refers to the width across the tyre and is referenced in millimetres.
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.’
Can I use 205 60r16 instead of 205 55r16?
Yes. It will have a slightly lower sidewall height, but should work fine.
What does 205-55r16 mean?
On this page you’ll find a color-coded explanation of the 205-55R16 tire code. This number indicates that your tire has a width of 205 millimeters. This number means that your tire has an aspect ratio of 55%. In other words, your tire’s sidewall height (from the edge of the rim to the tire’s tread) is 55% of the width.
Height is the next standard parameter in tyre size (B). Marking 205/55 R16 means that the height is 55% of the width. It is easy to calculate: 205 • 55% (0.55) = 112.75 mm. The larger the B value in the formula, the higher the tyre will be and vice versa.
What is the aspect ratio of 205/60r16 tires?
While the 205/60r16 tires have an aspect ratio of 60, the 205/55r16 tires have an aspect ratio of 55. Aspect ratio refers to the percentage of the tire’s height compared to its width. This means the 205/60r16 tires’ height is greater than that of the 205/55r16 tires.
Is it okay to change seasonal tires with 205/55R16 sized tires?
My seasonal tires are size 205/60r16. Is it okay to change them with 205/55r16 sized tires? Yes. It will have a slightly lower sidewall height, but should work fine. 205 – width of the tire in mm. On some wheels, you can go 5-10mm (approximately) over without a problem. However, it’s good practice to stay with the exact with of the stock tire
Will a 205/65r16 tire fit a car?
Will a 205/65R16 tire fit a car using 205/55R16 tires today? Possibly. They will have a few side effects though: You will lose 20.5mm of wheel arch clearance, do you have this excess clearance to lose?
How thick is a car tyre?
New tyres have a tread depth of 8-9mm. Legal minimum tread depth is 1.6mm.
What is the thickness of a tire?
What a cool way to recycle tires! Tire thickness will depend on how old the tires are and the brand you get. Generally, new car tires will have a 10/32-inch or 11/32-inch tread depth. Some trucks and SUVs may have deeper treads, and winter tires are typically thicker than average, too.
How thick is a sidewall on a car tire?
A car tire typically has a sidewall that is between 1/4″ to 5/8″ (5 to 15 mm) thick. However, this can vary depending on the specific tires that are being used. Some tires may have thicker or thinner sidewalls, depending on their design and intended purpose.
What is the tyre size?
Tyre size The tire size is made up of: Tread Width / Aspect Ratio / Rim Diameter. For example 245/50R18 Load/Speed (cannot find text: coopertires_sites:site.tooltips.motorcycle_load_speed_index) Position (cannot find text: coopertires_sites:site.tooltips.motorcycle_standard) Rec.rim
What does tire diameter mean?
Tire diameter refers to the height of the tire from the road to the top of the tread. Tires with lower aspect ratios—shorter sidewalls—look cooler and generally perform better, so they’re what most people want when upsizing their cars’ tires and wheels.
What does Z mean on tyres?
high performance tire
SPEED RATING Z While it nearly always means a high performance tire for high-performing sports cars, “Z” may actually appear in the middle of a tire’s size information. When it does, it represents either a maximum speed of more than 149 mph (240 kph) or 186 mph (300 kph).
What does Z mean on a tire?
While it nearly always means a high performance tire for high-performing sports cars, “Z” may actually appear in the middle of a tire’s size information. When it does, it represents either a maximum speed of more than 149 mph (240 kph) or 186 mph (300 kph). Which of those speeds it refers to will depend on the specific tire.
Is a w & y tire a “Z”?
However, if a tire is rated W & Y, which is 168 mph and 186 mph respectively or more, tire manufacturers will still list the tire as a “Z.” Exotic sports cars are fitted with the W & Y tires because of their high speeds and performance levels. Therefore, you should consult your tire manufacturer if the rating is confusing.
Do Z and ZR tires have the same speed rating?
With that said, Z and ZR-rated tires often have the same speed rating. Usually, both of these ratings mean that the car can go above 149 mph. In actuality, the “Z” rating is broken down into smaller categories of V, W, and Y. When used to refer to speed, these letters all mean that the tire can go above 149 mph.
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 88 mean on a tyre?
What is the tyre load index rating?
| LOAD INDEX | KG MAX. LOAD PER TYRE |
|---|---|
| 88 | 560 |
| 89 | 580 |
| 90 | 600 |
| 91 | 615 |
What does 88H v t mean in tire specs?
H , V and T are regarding to max. speed – V is about 230km/h ; H is about 200KM/h; T is about 190km/h, and so on. Q: What does 88h and 88V mean in tire specs? Write your answer… Still have questions? 88 is the max weight for the tyre, h refers to the max speed allowed for the tyre, in this case 139 mph.
What is 88 h tyre?
Write your answer… Still have questions? 88 is the max weight for the tyre, h refers to the max speed allowed for the tyre, in this case 139 mph. What does a U S Army 88H Cargo Specialist do?
What does 235 mean on a tyre?
The first number is the easiest and measures the width of the tyre in metric millimetres. 235 means your tyre is 235mm wide. The second number refers to the profile of the tyre or the height of the tyre’s sidewall. The number isn’t in millimetres but is instead an aspect ratio measurement of how the height relates to total width.
What does 55 mean on a tyre?
The number “55″ refers to the nominal aspect ratio, i.e. the ratio of the tyre’s height to its width. In this case, the height of the sidewall is 55 percent of the nominal width. The abbreviation “R” says something about the construction and describes the way the cords of the casing are arranged.
What does 195 55 R16 mean?
(195mm) width section of the tyre that comes in contact with the road. (55%) Aspect ratio – the height of the sidewall as a percentage of its width. (R16) This is the inner diameter of the tyre, where your rim fits.
What does 195 mean on a tire?
This number indicates that your tire has a width of 195 millimeters. The tire size was designed to fit rims or wheels that are 16 inches in diameter. This number means that your tire has an aspect ratio of 55%. In other words, your tire’s sidewall height (from the edge of the rim to the tire’s tread) is 55% of the width.
What is the diameter of 195/55R16 tires?
195/55R16 tires have a diameter of 24.4″, a section width of 7.7″, and a wheel diameter of 16″. The circumference is 76.8″ and they have 825 revolutions per mile. Generally they are approved to be mounted on 5.5-7″ wide wheels. Specs may vary by manufacturer.
What does 195/65 R 15 91h mean?
We shall therefore analyse it in detail to discover what 195/65 R 15 91H means. 195 – This is the maximum width of the tyre, under conditions in which the vehicle is fully loaded, and in our example as you may have guessed, this comes to a maximum of 195 mm. 65 – Represents the ratio between the width and height of the tyre from the rim.
What does 195-55r16 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 195-55R16 tire code. This number indicates that your tire has a width of 195 millimeters. The tire size was designed to fit rims or wheels that are 16 inches in diameter.
What does R17 mean on a tyre?
Size of the wheel After the letter R, a number that indicates the wheel size where it fits. So for the example, P225/45R17 91V, R17 means the tire is made of radial-ply construction and that it fits a 17-inch rim.
What does R Mean on a tyre?
The letter (R) stands for “RRadial” which is the type of tyre. The number (16) tells you the size of the wheel rim in inches. The last two numbers (91) tell you the load index rating and the letter (V) tells you the speed rating. Here they are labelled and broken down further:
What does 225-45r17 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 225-45R17 tire code. This number indicates that your tire has a width of 225 millimeters. The tire size was designed to fit rims or wheels that are 17 inches in diameter.
What is a load rating on a tyre?
The load rating on a tyre converts to a maximum weight that each tyre is manufactured to support at a specified speed. The UK law requires the load rating to be equal to or higher than the tyre that is recommended by the vehicle manufacturer for the tyre size that is fitted.
What does 215 60 R16 mean?
215 is the width in millimetres of the tyres cross section. 60 is the Aspect Ratio, it is the ratio of the sidewall height to the cross section width. 16. 16 inches, stands for the diameter of the wheel that the tyre is designed to fit.
What does 215-60r16 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 215-60R16 tire code. This number indicates that your tire has a width of 215 millimeters. The tire size was designed to fit rims or wheels that are 16 inches in diameter.
What is the diameter of a 215/60R16 tire?
215/60R16 tires have a diameter of 26.2″, a section width of 8.5″, and a wheel diameter of 16″. The circumference is 82.1″ and they have 771 revolutions per mile. Generally they are approved to be mounted on 6-7.5″ wide wheels. Upsizing Wheels or Tires? When searching for the perfect tire for your vehicle you need options.
What does 215 mean on a tire?
The first number in these measurements indicates what your tire’s width is. Take 215/55R17, 225/55R17 and 235R55/17 for an example. It’s clear that 215, 225 and 235 are the widths of your tires measured in millimeters. 215 vs. 225 vs. 235 Tires: What Are The Differences?
What does p215/65r17 95h mean?
Car tire numbers explained – Tires will have something similar like this printed on the side of it: P215/65R17 95H. The first letter means type of tire for certain vehicles. P = Passenger vehicles tire. T = Truck vehicles tire. The 3 digit number (215) is the Width. This number refers to the tire width in millimeters.
What does R mean on tyres?
Radial construction
This letter indicates the type of construction used within the casing of the tyre, which in our example is “R” for Radial construction. Other examples are “B” for Bias-ply or “D” for Diagonal construction. Radial tyres are the most common tyres on the road today.
What does the letter “R” Mean on a tyre?
This tells you how a tyre is constructed. In this example, the “R” means that the tyre has radial construction. This is where the internal ply cords extend across the casing from bead to bead, in a radial direction. Less common tyre constructions include diagonal or bias ply, represented by the letter “D”. 4. Rim diameter in inches
What are tyre markings?
Next in our series of tyre markings is a letter instead of a number. This letter indicates the type of construction used within the casing of the tyre, which in our example is “R” for Radial construction. Other examples are “B” for Bias-ply or “D” for Diagonal construction. Radial tyres are the most common tyres on the road today.
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 does 17 mean on a tyre?
R means radial which refers to a common tyre construction for passenger vehicles. The final number is a measurement in inches of the diameter of the wheel the tyre will be fitted to. In this case, 17 means the tyre is fitted to a 17-inch wheel. Yes, inches. Tyres mix metric and imperial measurements. Just to keep you on your toes.
How many miles do tyres last?
When it comes to hw many miles a set of tyres should last, a driver should be able to get at least 20,000 miles out of the front tyres and 40,000 for the back tyres.
How long do tyres last?
In 5 years, your tyres will probably have been run over many different surfaces and perhaps have suffered shocks. After 5 years of use, have them checked by a professional at least once a year. This will ensure that they have not been damaged prematurely and that they do not endanger you or your passengers. Tyre DOT: how to tell tyre age?
How long do all-season tires last?
On average, people drive between 12,000 to 15,000 miles a year, which means the average good quality all-season tire will last somewhere between three and five years, depending on maintenance, driving style and conditions, etc.
How many miles a year do high-performance tires last?
Or less; some high-performance tires on cars driven aggressively will be worn to the 2/32-inch point without ever seeing 15,000 miles, but those are extreme cases. The average American drives between 14,000 and 15,000 miles a year, according to data from the Federal Highway Administration.
How long does a tire warranty last?
“Some tire manufacturers offer a warranty as high as 80,000 miles or more, reflecting confidence in that particular product’s longevity based on its engineering, technology, and design. Other tires may be built to provide 30,000 miles of service.”
What do tyre specs mean?
185 indicates the width of the tyre in millimetres (185 mm) 75 indicates its aspect ratio, a comparison of the tyre’s section height with its section width (75 indicates the height is 75% of its width) R indicates radial ply construction. 14 indicates the diameter of the wheel rim (14 inches)
What does tyre size mean?
It is important to know exactly what is meant by tyre size. The code that is found on the tyres gives more than just the basic size. The size elements are essentially the tyre’s height and width. Tyre sizes will also vary depending on the type of vehicle i.e. van and lorry tyres tend to be larger/chunkier than car tyres.
What does tyre speed mean?
Your tyres maximum speed and how much weight is combined on the sidewall. Typically, this designation will come after the basic size information, and is expressed as a two-digit number (load) and a single letter (speed). To refer to our example above, a tyre might read 235/45R17 91W.
What does a tyre rating mean?
The final letter represents the Speed Rating of the tyre. This is the maximum speed that the tyre can cope with under its maximum load. Each letter represents a corresponding speed. The example we are using has an H rating which equates to 130mph (210kmh).
What is a motorcycle tire size?
Motorcycle tire sizes are usually the same as car tire sizes. The first three digits represent the width of the tire in millimeters (mm). The second two digits after the slash mark represent the aspect ratio, which is the height of the tire’s cross-section to its width.
How do you read tyre codes?
The first three digits belong together and indicate the width of the tyre (in millimetres). In the example above, the tyre is 195mm wide. The two digits following the first slash are what is known as the aspect ratio. Essentially this is the height of the tyre as a percentage of the width.
How do you read a tyre date code?
What is DOT? DOT is the abbreviation for “Department of Transportation” and indicates a unique tyre code which is a series of 7 to 13 letters and numbers printed on the sidewall of a tyre (the vertical surface of rubber above the wheel).
How do you read a car tire number?
By knowing how to interpret the numbers and letters on a car tire, you can know the speed rating, temperature resistance, load index numbers, as well as the tire’s width and rim diameter. Read the manufacturer and the tire name. These are printed in large letters toward the outside of the tire.
How do you know if a tyre has been manufactured?
The first two numbers of the 4-digit DOT date code (which, again, appears at the very end of the string of letters and numbers that start with DOT) indicate the week that the tyre was manufactured. The last two numbers of the date code tell you the year of manufacture.
What is a dot code for a tire?
The DOT code is used by the Department of Transportation (DOT) to track tire production for recall purposes. If a tire proves to be defective, this number helps keep track of where these tires ended up so buyers can be notified of the problem. At the end of the DOT code you’ll find a four-digit number. This is the manufacturing date of the tire.
