FAQ: What Does The Number On Tires Mean?

What does the 265 70R17 mean?

On this page you’ll find a color-coded explanation of the 265-70R17 tire code. This number means that your tire has an aspect ratio of 70%. In other words, your tire’s sidewall height (from the edge of the rim to the tire’s tread) is 70% of the width. In this case, the sidewall height works out to be 185 millimeters.

What do Size numbers mean on tires?

The first number to appear in your tire size information is the width, in millimeters, of the correct tires for your vehicle: P225/70R16 91S. Tire makers calculate the aspect ratio by dividing a tire’s height off the rim by its width. If a tire has an aspect ratio of 70, it means the tire’s height is 70% of its width.

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What are the first three numbers of a tire?

The first three numbers of a tire size measures the width in millimeters from sidewall to sidewall. If the tire size is 255/60 R16, the width of the tire is 255 millimeters.

Can I put different size tires on my car?

Wheels and tires are not interchangeable words. Tires are a part of the wheel setup. For instance, your vehicle has a set size of rims, but you can buy different sizes of tires to fit those rims, as long as the middle of the tires is the correct size.

What’s the difference between 285 and 265 tires?

The larger 285/70R17 tire in the photo above stands over an inch taller and is nearly an inch wider than the 265/70R17 size. The width of the tread is also a half-inch wider. Many late-model domestic trucks accept this difference in size.

What is the difference between 225 and 265 tires?

Registered. Not quite that simple,, 225 and 265 are the width, but 75 or 70 is an aspect ratio of the width to the sidewall so a 225/75/16 is 29in tall, a 265/75/16 will be 31.5in tall, and 265/70/16 will be 30.5in tall. (width divide by 25.4 times aspect ratio divide by 100, times 2 plus rim diameter).

Can I use 235 tires instead of 225?

Are 225 and 235 Tires Interchangeable? Yes, they are. However, this is only possible if your car’s rims can accept the larger millimeter.

What do the 3 numbers mean on tire size?

Tire Width Is the width of the tire measured in millimeters from sidewall to sidewall. The first three -digit number in the tire size refers to the tire width. For instance, in a size P215/65 R15 tire, the width is 215 millimeters.

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Can I use 225 tires instead of 215?

Yes, you can. But only if the rims on your car can accommodate tires that are 10-20 millimeters wider. Bear in mind that wider wheels require more fuel due to their increased rolling resistance. Again, wider tires are more costly than narrower ones because they need more rubber during construction.

How do I know the size of my tires?

Find the information in your vehicle owner’s manual in the glove compartment or on the tire information sticker on your driver’s side door. Usually those elements contain all the information related to your tire size and specifications as well as the appropriate tire pressure.

What does the R mean in tire size?

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.

How do you read a tire code?

Remember that the last four digits of the code are the date the tire was manufactured. You can check the first two digits of the DOT code to know the week of the manufacturing. The last two digits will reveal the manufacturing year. For instance, when it was written in 0203, the manufacturing year was 2003.

What happens if I have the wrong size tires on my car?

Effects of Wrong Size Tires Choosing too tall of a tire can result in a vehicle prone to rolling over, a dangerous concern for any driver. Tall tires may also rub against the inside of the wheel well. While not immediately problematic, this rubbing can lead to steering issues over time.

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Is it bad to put the wrong size tires on your car?

Unfortunately, altering the tire size of a vehicle without thorough and careful consideration is a decision that can really bite. Fitting the wrong tire size can cause damage to a vehicle, and is a real safety hazard as well.

Can wrong size tires damage transmission?

Wrong size tires do not damage the transmission. Although ill-fitting tires do not directly impact the transmission, it does impact the overall performance of the vehicle. Wrong size tires can cause a safety hazard as well as cause structural damage to the vehicle.

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