275/60R20 vs 275/65R20 Tires | 7 Differences

Differentiating between tires can be difficult if they have only a little difference. The main differences between 275/60r20 and 275/65r20 tires are in aspect ratio. It represents the percentage of sidewall height to section width ratio. Sidewall height increases with the increase in aspect ratio.

275/60r20 tires have an aspect ratio of 60%, and 275/65r20 tires have a 65% aspect ratio. So, there is an aspect ratio difference of 5%, which is not ideal for tire interchange.

Aspect ratio differences affect vehicle performance factors such as gas mileage, stability, control, load capacity, etc. It also affects the pricing and durability of the tire.

I have made a basic comparison chart between 275/60r20 and 275/65r20 tires:

Tire Code

275/60R20

275/65R20

Build Type

Radial

Radial

Rim size

20 inches

20 inches

Overall Diameter

32.99 inches

34.07 inches

Radius

16.49 inches

17.04 inches

Tread width

10.83 inches

10.83 inches

Sidewall

6.5 inches

7.04 inches

Circumference

103.65 inches

107.05 inches

Revolution per mile

611

591

Load index rating

115

116

Load Capacity

2679 pounds

3750 pounds

Price

$153-$293

$156-$390

I have also compared some other tires. You can check these out:

1. Fitment Guide

Overall diameter of 275/65r20 tires is 1.08 inches, or 3.27% more than 275/60r20 tires. The circumference difference between the two tires is 3.4 inches or 3.3%.

275/65r20 tires also have an increased sidewall height of 0.54 inches, or 8.3%, compared to 275/60r20 tires. We know that the 3% difference is negligible for a new tire replacement.

But 275/60r20 and 275/65r20 tires have more than that difference limit in different aspects. You will need to modify your vehicle to install 275/65r20 tires instead of 275/60r20 tires, as it may cause fitment issues.

2. Stability

275/60r20 tires have less sidewall height compared to 275/65r20 tires. More sidewall absorbs more vibrations from cracks and bumps on uneven terrain.

275/65r20 tires have 7.04 inches of sidewall, and 275/60r20 tires have 6.5 inches of sidewall height. So, 275/60r20 tires will provide less ride comfort and more vibration during driving than 275/65r20 tires.

Wider tires also provide more stability than narrow tires. 275/65r20 tires also have wider tires compared to 275/60r20 tires. As a result, you will have a more stable ride with 275/65r20 tires.

3. 275/60r20 vs 275/65r20 Gas Mileage

Gas mileage of a vehicle also depends on some factors of the tire. Contact patch, rotational mass, and revs per mile are these factors.

Tires with a higher contact patch and rotational mass will provide less mileage. Also, tires with lower revs per mile will cause less friction and result in higher mileage.

275/65r20 tires have a higher contact patch and mass but lower revs per mile. So, 275/60r20 tires have better mileage than 275/65r20 tires. Fuel economy is an important factor for users who drive regularly.

4. Control

Trucks are meant for heavy loads and offroading, where control is significant. Tires with lower sidewalls provide sharper turns and handling. 275/65r20 tires have a higher sidewall height, which provides lower traction and control over the vehicle.

On the other hand, the 275/60r20 tire’s smaller sidewall is good for sharper turns and responsive handling. So, 275/60r20 tires have better control than 275/65r20 tires.

5. Durability

275/60r20 tires have a lower contact patch and sidewall height. They are also lightweight, which is better for even tears, and they put less pressure on the powertrain.

275/65r20 tires have a higher mass and sidewall height. It may provide stability, but it puts a lot of pressure on the powertrain. As a result, 275/60r20 tires are more durable than 275/65r20 tires.

6. Load Capacity

Higher load capacity is another characteristic of a truck. Trucks are meant for heavy-weight lifting and towing. 275/60r20 tires have a load capacity of 2679 pounds with a 115 load index rating.

275/65r20 tires have a 116 load index rating and 3750 pounds of load capacity. So, 275/65r20 tires can take more loads compared to 275/60r20 tires.

7. Pricing

Trucks carry heavy loads all the time, and the tires wear out soon. So, pricing is also important for many truck owners. The price of 275/60r20 tires is between 153 and 293 dollars.

On the other hand, 275/65r20 tires cost around 156 to 390 dollars. So, 275/60r20 tires are more affordable than 275/65r20 tires, which is helpful for regular users.

FAQs

What’s the difference between 275 65r20 and 275 60r20?

275/60r20 and 275/65r20 tires have the main difference in aspect ratio. 275/60r20 tires come with an aspect ratio of 60%, whereas 275/65r20 tires come with a 65% aspect ratio.

They also have a slight difference in overall diameter, sidewall height, circumference, revs per mile, gas mileage, and some other performance factors.

Are 60 tires wider than 65?

60 tires have the same width as 65 tires. Both tires have 10.83 inches of width. Width is directly connected to the stability, contact patch, traction, control, and fuel economy of a vehicle. 275/60r20 and 275/65r20 tires have the same width and provide the same output in a truck.

Can I use a tire with a different aspect ratio?

Allowed difference in tire replacement is 3% in overall specifications. If you use a tire with a different aspect ratio, it should be within the difference limit.

If you have a tire with a different aspect ratio and more than 3% specification differences, you need to modify your vehicle. It is unsafe to use these types of tires, and you should be aware of that before replacement.

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