What people should know about 265 70r17 Vs 265 65r17 for their car

265 70r17 Vs 265 65r17 depends on some fixed factors. One has to go for some calculative criteria to determine the differences in both tires. The term that is related to these differences is size indexing. The size indexing of a tire involves 4 parts, width, and aspect ratio, construction, and rim ratio.

As for the 265 70r17 and 265 65r17, they have no differences in width, construction, and rim ratio. However, the major difference is in the aspect ratio which is the crucial part of tier sizing. One has to understand all those terms to know the differences.

Moreover, one can look below for more information.

265 70r17 Vs 265 65r17                

A tire in American English or a tyre in British English indicates the same things in the automobile industry. This is one of the major components of the car. The circular-shaped wheel of the car is a tire. Not all the part of the wheel but the circular black part of the wheel that surrounds the rims of the wheels.

Normally, the construction of the tire involved hard rubber. The material is extremely high quality and heavy-duty. This thing can withstand the extreme fraction of concrete road with a heavy load. Tires are the most functional part of the car.

Specifically, one can say, whatever high technology the car carries, without the tire, it will not move an inch. So, it is the crucial part of the car that people cannot ignore. The main function of the tire is to support the weight of the vehicle.

Also, it will absorb the shocks of the road. Besides, those will transmit traction, and torque. After that, those will brake forces to the road surface to maintain the balance and change the direction of the road. These are the most important yet basic functions of the tire in a car.

To fulfil these four needs engineers selected the high-grade heavy-duty resilient rubber. In the construction, they filled the tire with compressed air for accurate performance. As for the attachment with the car, the wheel has an inner and outer rim to hold it.

One may have seen the metal part of a wheel, this is the rim that holds the tire with the car. The rim is attached to the car with heavy-duty attachment nuts.

While selecting a tire for the car along with the quality, the size of the tire is the significant part. If one is familiar with the size index, they will know the letters and numbers of it. Those indicate so much about the tire.

In case one is not familiar with the terms, this article will help understand everything about it. The terms 265 70r17 and 265 65r17 indicate the size index of the tire. Those numbers and letters indicate the wide of the tire. As well as the aspect ratio and sidewalls of it.

One has to understand those to select the exact tire for their car. Because these numbers are important to fit the tire in the car. However, people often have the query about the differences between the 265 70r17 and 265 65r17 shares.

Initially, we can say that the difference is in the size index. Clearly, they have some deep differences. Before going any further one must know which letter means what in terms of size indexing. If we break size index 265 65r17 we will get,

  • –265 is indicating the width of the tire in meters.
  • — 65 means the aspects ratio of the height or width of the tire.
  • — R stands for construction type of tire.
  • –Finally, 17 indicates the Rim diameter in inches of the tire.

If we compare 265 70r17 and 265 65r17 we will have to compare the terms below.

265 70r17 Vs 265 65r17


As the first part of the terms indicates the width of the tire, the terms 265 70r17 and 265 65r17 have 265 in first. That means there is no difference in width between this two. Because they share the same number 265. Since the width of the tire is measured in millimeters, we can say both tires are 265 millimeters wide.

One does not have to confuse about the way of measuring the width. Because the manufacturer measures the width of the tire with highly accurate instruments. They measure the width from one sidewall to another. Since the width of the tire is similar one can select any of the two in terms of width.

Aspects Ratio

In terms of aspects ratio, one will find a huge difference between 265 70r17 and 265 65r17. The second term of the number is the aspect ratio. So for the tire format 265 70r17 the aspect ratio is 70. Meanwhile, for 265 65r17 the aspect ratio is 65.

In the automobiles industry, the aspect ratio is calculated in percentage. So the tire 265 70r17 has a 70% aspect ratio. On other hand, the tire 265 65r17 has a 65 aspect ratio. So, the aspect ratio of these two has differences of 5 which is a big deal in terms of tire size index.

Because the vertical cross-section of the tire is divided by the width to calculate the aspect ratio. A change of a bit can make huge differences and create major effects.

Construction Type

One can say the construction type of the tire by letter in the size index of the tire. Generally, the tire size index can have two types of construction type letters. They can find it in the sidewalls of the tire.

The letters are,

R- The letter R indicates the radial type of the tire.

B- It indicates the tire is a bias-ply type or aka cross-ply type.

As for 265 65R17 and 265 70R17, both have the letter R. That means both tires have radial type construction. So, there is no difference in construction type in both the tire.

Rim Diameter

The wide-open part inside the tier is the rim diameter. By this part, one has to attach the tire with the rim. Usually, the rim diameter is calculated in inches. The last part of the size index indicates the Rim diameter.

Considering the given size index of 265 65R17 and 265 70R17, we have 17 inches rim diameter for both the tire. Therefore, there are no differences in rim diameter between these two. So, both of them will be perfectly fit in 17 inches rim.

For more clarification, let’s illustrate a detailed comparison table for both tire types.

Diameter inches (mm)30.56 (776.3)31.61 (802.8)1.04 (26.5) 3.4%
Width inches (mm)10.43 (265)10.43 (265)0 (0) 0%
Circumstances inches (mm)96.02 (2438.82)99.29 (2522.07)3.28 (83.25) 3.4%
Sidewall Height inches (mm)6.78 (172.25)7.3 (185.5)0.52 (13.25) 7.7%
Revolutions per mile (km)659.89 (410.03)638.1 (396.5)-21.78 (-13.53) -3.3%

As we can see from the comparison table above, both tire shares several differences in some criteria. Firstly, 265 65R17 and 265 70R17 share 3.4% differences in terms of Diameter. Secondly, in circumstances, the tires have 3.4% differences.

Thirdly, in sidewall height of the 265 65R17 and 265 70R17 have 7.7% differences. In this term, the first one is less than the second one. Finally, the last difference is in revolution per mile which is 3.3%. However, 265 65R17 and 265 70R17 share no differences in width.

What will be the speedometer differences for 265 70r17 and 265 65r17 tires?

Speedo ReadingActual Speed
20 mph (32.19 km/h)20.68 mph (33.29 km/h)
25 mph (40.23 km/h)25.85 mph (41.61 km/h)
30 mph (48.28 km/h)31.02 mph (49.93 km/h)
35 mph (56.33 km/h)36.19 mph (58.25 km/h)
40 mph (64.37 km/h)41.37 mph (66.57 km/h)
45 mph (72.42 km/h)46.54 mph (74.89 km/h)
50 mph (80.47 km/h)51.71 mph (83.21 km/h)
55 mph (88.51 km/h)56.88 mph (91.54 km/h)
60 mph (96.56 km/h)62.05 mph (99.86 km/h)
65 mph (104.61 km/h)67.22 mph (108.18 km/h)
70 mph (112.65 km/h)72.39 mph (116.5 km/h)
75 mph (120.7 km/h)77.56 mph (124.82 km/h)
80 mph (128.75 km/h)82.73 mph (133.14 km/h)
85 mph (136.79 km/h)87.9 mph (141.46 km/h)
90 mph (144.84 km/h)93.07 mph (149.79 km/h)
95 mph (152.89 km/h)98.24 mph (158.11 km/h)
100 mph (160.93 km/h)103.41 mph (166.43 km/h)

What is the height of the tire 265 70r17?

As we know the last part of the size index indicates the rim size of the wheel. As for 265 70r17, 17 is the rim size. In the wheel, the rim size also indicates the height of the tire. So the height of the rim size 17 will be,

Rim SizeP-Metric SizeActual Tire Height
17 Inch265/70R1731.6 inches
275/70R1732.2 inches
285/70R1732.7 inches

What are the types of the tire?

One will find different types of tires in the market. Normally, the experts categorized the tier in terms of season. However, some of the tires are categorized in terms of the types of vehicles. The most reasonable criteria and most searched criteria are the seasons.

Summer tires

If one is driving a passenger vehicle in the summer season that has a temperature of around 450F, the summer tire is for them. Because those tires are manufactured the way to tackle high heat on the road. Those tires will perform great in extreme dry as well as wet conditions.

Wet means rain, not heavy snow. Since it will be summer rain is obvious. Also, if one is looking for an almost all-season tire then a summer tire is not a good option.

Winter tires

If one is living in a country that has a temperature of below 450F or minus temperature, the winter tier is for them. Also, in the place where there is snow in winter, these are the perfect tier. Engineers specially designed those tires to tackle the snowy road.

Those have an extreme level of traction, grip, and control compared to the summer tier. Those features are simply absent in the summer tires that making them unsuitable for winter. Another difference in the winter tire is the physical structure. They are different from the summer and all-season tires in physical design.

All Season Tires

All-season tires are for the mid-season. They can run on both dry roads. Also, mild snow will cause no issue. However, they are too for tackling high traction and grip. Even the control of those tires is not so much.


Hopefully, one have all the answers on 265 70r17 Vs 265 65r17. Both the tire have the same width which is 265. Also, they have the same construction and rim size. The only and crucial difference they share is the aspect ratio. It is something that can create major effects in a crucial part of the tier.

While buying along with the other part of the tier like rim size, one has to put great care on the aspect ratio too.

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