Tire Size Calculator

Tire Size Calculator

Original Width (mm): Original Aspect Ratio: Original Diameter (inches): New Diameter (inches): Calculate

Here’s a table that provides a simplified overview of tire size and the corresponding dimensions:

Tire Size	Tire Width (mm)	Aspect Ratio (%)	Rim Diameter (inches)
175/65R14	175	65	14
205/55R16	205	55	16
225/45R17	225	45	17
245/40R18	245	40	18
265/35R19	265	35	19
285/30R20	285	30	20

Please note that this table provides general examples, and tire sizes can vary depending on specific vehicle and rim requirements. Always refer to the manufacturer’s recommendations or consult a tire professional to ensure the correct tire size for your rims.

Tire Size	Tire Width (mm)	Aspect Ratio (%)	Rim Diameter (inches)
155/70R13	155	70	13
185/60R14	185	60	14
195/65R15	195	65	15
205/50R16	205	50	16
215/55R17	215	55	17
225/60R18	225	60	18
235/45R19	235	45	19
245/35R20	245	35	20
255/40R21	255	40	21
265/35R22	265	35	22
275/30R23	275	30	23
285/35R24	285	35	24
295/25R25	295	25	25
305/30R26	305	30	26
315/35R27	315	35	27
325/25R28	325	25	28
335/30R29	335	30	29
345/35R30	345	35	30
355/25R31	355	25	31
365/30R32	365	30	32

Again, please note that tire sizes can vary based on specific vehicle and rim requirements. Always consult the manufacturer’s recommendations or seek assistance from a tire professional to ensure the correct tire size for your rims.

How do I know what tires will fit my rims?

To determine compatible tires for your rims, check the rim size (e.g., R16), then match it with tires designed for that rim diameter. Ensure the tire width is suitable for the rim width, maintain the recommended aspect ratio, and consider load index, speed rating, tire type, and intended use. Consult professionals or online resources for further guidance.

Here’s a table that provides a simplified overview of the key factors you need to consider when determining which tires will fit your rims:

Key Factors	Details and Considerations
Rim Size	Check the markings on the rims for diameter (e.g., R16)
Rim Width	Note the width of your rims
Tire Width	Choose tires slightly narrower or equal to rim width
Aspect Ratio	Maintain recommended aspect ratio for accurate readings
Load Index	Refer to vehicle manual for appropriate load index
Speed Rating	Refer to vehicle manual for recommended speed rating
Tire Type	Consider all-season, summer, winter, or off-road tires
Intended Use	Choose tires based on driving needs and climate
Consult Professionals	Seek advice from tire experts or reputable dealers

Remember, this table provides a general overview, and it’s always recommended to consult with professionals or refer to specific tire fitment guides for accurate and detailed information based on your vehicle and rim specifications.

To determine which tires will fit your rims, you need to consider a few important factors. Here are the key steps to follow:

1. Check the rim size: Look for the markings on your rims. The most common format is a series of numbers like “R16” or “16x7J.” The number after the “R” represents the rim diameter, while the number before the “x” indicates the rim width. Make a note of these measurements.
2. Understand the tire sizing system: Tires have a specific sizing system, such as “P215/65R16” or “225/40ZR18.” The numbers in this format represent the tire’s width, aspect ratio, construction type, and rim diameter.
3. Verify the rim diameter: Ensure that the rim diameter matches the tire’s required rim diameter. For example, if your rim size is 16 inches, you need tires designed to fit 16-inch rims.
4. Consider tire width: The tire width should be compatible with your rim width. It’s generally recommended to have tires that are slightly narrower or equal to the rim width. Installing significantly wider tires can affect handling and potentially cause clearance issues.
5. Maintain aspect ratio: The aspect ratio is a percentage that represents the height of the tire’s sidewall as a proportion of its width. For instance, in a tire size of P215/65R16, the aspect ratio is 65. It’s crucial to maintain the aspect ratio recommended for your vehicle to ensure proper fitment and maintain accurate speedometer readings.
6. Check load index and speed rating: These ratings are important for safety and performance. Refer to your vehicle’s manual to determine the appropriate load index and speed rating for the tires you need.
7. Consider tire type and intended use: Different types of tires are designed for specific conditions and purposes. For example, all-season, summer, winter, or off-road tires. Choose the type that suits your driving needs and the climate you’ll be driving in.
8. Consult a tire fitment guide: Online tire fitment guides or contacting a reputable tire dealer can provide further assistance. They can cross-reference your rim size and vehicle specifications to recommend compatible tire options.

Always ensure that the recommended tires meet the manufacturer’s specifications and consult with a professional if you have any doubts or concerns.

How do I find my tire size?

To find your tire size, check the sidewall of your current tires. The size is displayed in a format like “P215/65R16” or “225/40ZR18.” You can also refer to your vehicle’s manual or tire placard located on the driver’s side door jamb, glove compartment, or fuel filler door.

To find your tire size, you can follow these steps:

1. Check your vehicle’s manual: The tire size information is often listed in the vehicle’s manual. Look for a section that provides details about the recommended tire specifications.
2. Check the tire placard: Most vehicles have a tire placard located on the driver’s side door jamb, glove compartment, or inside the fuel filler door. The placard displays important information, including the recommended tire size.
3. Check the current tires: Look at the sidewall of your existing tires. The tire size is typically displayed in a standardized format, such as “P215/65R16” or “225/40ZR18.” The numbers and letters indicate the tire’s width, aspect ratio, construction type, and rim diameter.
4. Consult online resources: Many tire manufacturer websites and online tire retailers provide tools or search functions where you can enter your vehicle’s make, model, and year to find the recommended tire size.
5. Visit a tire dealer or service center: If you’re unsure about the tire size, you can visit a tire dealer or a reputable service center. They can help you identify the appropriate tire size based on your vehicle’s specifications.

Remember that it’s essential to choose tires that meet the manufacturer’s recommended size for optimal performance, safety, and compatibility with your vehicle.

How do you read tire sizes in inches?

To read tire sizes in inches, look for the following information on the tire sidewall:

1. The first number represents the tire width in inches.
2. The second number indicates the tire’s aspect ratio, which represents the sidewall height as a percentage of the width.
3. The final number indicates the rim diameter in inches.

For example, a tire size of 235/55R17 translates to a tire width of 235 mm, an aspect ratio of 55%, and a rim diameter of 17 inches.

What do the numbers on the tire size mean?

The numbers on a tire size provide important information about the tire’s dimensions. The first number represents the tire width in millimeters, the second number indicates the aspect ratio (sidewall height as a percentage of the width), and the final number denotes the rim diameter in inches.
The numbers in a tire size provide specific information about the tire’s dimensions. Here’s a breakdown of what each number represents:

1. Tire Width: The first number denotes the tire width in millimeters, measuring from sidewall to sidewall when the tire is properly inflated.
2. Aspect Ratio: The second number represents the tire’s aspect ratio as a percentage. It indicates the height of the tire’s sidewall as a proportion of the tire’s width.
3. Construction Type: The letter following the aspect ratio indicates the tire’s construction type, such as “R” for radial construction.
4. Rim Diameter: The final number signifies the diameter of the rim, measured in inches, on which the tire is intended to be mounted.

Together, these numbers provide essential details about a tire’s size and compatibility with a specific rim.

How big of a tire can I fit on my rim?

The size of the tire that you can fit on your rim depends on the rim width and the recommended tire width range. It is generally recommended to choose a tire width that is within the range specified by the rim manufacturer or consult a tire fitment guide to determine the appropriate tire size for your specific rim.