275/45R18 Tire Size

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All You Need to Know About 275/45R18 Tires

275/45R18 tires have a section width of 275 millimetres (mm), an aspect ratio of 45%, radial construction, and an 18-inch wheel diameter. Before buying tires sized 275/45R18, converting 275/45R18 measurements in inches, comparing it with similar tire sizes such as 245/45R18, and researching the best 275/45R18 tires helps drivers to shop for the correct tires.

What Are The Dimensions of a 275/45R18 Tire in Inches?

The 275/45R18 tire has a section width of approximately 10.83 inches and a sidewall height of 4.87 inches. The overall diameter of a 275/45R18 tire is about 27.74 inches, and the circumference is approximately 87.11 inches. The recommended rim width range for the 275/45R18 size is 8.5 to 10.5 inches. In inches, a 275/45R18 tire size can be represented as 27.74" × 10.83" R18.

Most Recommended 275/45R18 Tires 

Drivers choosing 275/45R18 tires typically seek an excellent balance of sporty handling and all-around performance for their specific season or use case (summer grip, all-season versatility, or winter traction). Top models include: 

Product section
Title:
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Product Ids: 85966,95262,85966,65080

What Is The Difference Between 275/45R18 vs 245/45R18?

The main difference between 275/45R18 and 245/45R18 is the cross section width. The 275/45R18 is 275 mm wide, while the 245/45R18 is 245 mm wide. The 275/45R18 tire has a sidewall height of 123.75 mm and an overall diameter of 704.7 mm. Whereas, 245/45R18 has a sidewall height of 110.25 mm and an overall diameter of 677.7 mm. This means 275/45R18 is 13.5 mm taller, 30 mm wider, and 27 mm larger than the 245/45R18.

Can I use 245/45R18 instead of 275/45R18?

No, you should not use 245/45R18 instead of 275/45R18 as the 245/45R18 is about 30 mm narrower and has an overall diameter about 27 mm (≈1.06 in) smaller than the 275/45R18. That ≈3.8% diameter change will lead to speedometer inaccuracy; your speedometer will show a lower speed than your actual speed. It may also impact vehicle systems that depend on wheel speed, such as ABS, traction control, and stability control. Additionally, it can change effective gearing and compromise braking and handling. The narrower tire may not fit the wheel width designed for a 275, and it will generally reduce lateral grip and handling performance.

All You Need to Know About 275/45R18 Tires

275/45R18 tires have a section width of 275 millimetres (mm), an aspect ratio of 45%, radial construction, and an 18-inch wheel diameter. Before buying tires sized 275/45R18, converting 275/45R18 measurements in inches, comparing it with similar tire sizes such as 245/45R18, and researching the best 275/45R18 tires helps drivers to shop for the correct tires.

What Are The Dimensions of a 275/45R18 Tire in Inches?

The 275/45R18 tire has a section width of approximately 10.83 inches and a sidewall height of 4.87 inches. The overall diameter of a 275/45R18 tire is about 27.74 inches, and the circumference is approximately 87.11 inches. The recommended rim width range for the 275/45R18 size is 8.5 to 10.5 inches. In inches, a 275/45R18 tire size can be represented as 27.74" × 10.83" R18.

Most Recommended 275/45R18 Tires 

Drivers choosing 275/45R18 tires typically seek an excellent balance of sporty handling and all-around performance for their specific season or use case (summer grip, all-season versatility, or winter traction). Top models include: 

Product section
Title:
Subtitle:
Product Ids: 85966,95262,85966,65080

What Is The Difference Between 275/45R18 vs 245/45R18?

The main difference between 275/45R18 and 245/45R18 is the cross section width. The 275/45R18 is 275 mm wide, while the 245/45R18 is 245 mm wide. The 275/45R18 tire has a sidewall height of 123.75 mm and an overall diameter of 704.7 mm. Whereas, 245/45R18 has a sidewall height of 110.25 mm and an overall diameter of 677.7 mm. This means 275/45R18 is 13.5 mm taller, 30 mm wider, and 27 mm larger than the 245/45R18.

Can I use 245/45R18 instead of 275/45R18?

No, you should not use 245/45R18 instead of 275/45R18 as the 245/45R18 is about 30 mm narrower and has an overall diameter about 27 mm (≈1.06 in) smaller than the 275/45R18. That ≈3.8% diameter change will lead to speedometer inaccuracy; your speedometer will show a lower speed than your actual speed. It may also impact vehicle systems that depend on wheel speed, such as ABS, traction control, and stability control. Additionally, it can change effective gearing and compromise braking and handling. The narrower tire may not fit the wheel width designed for a 275, and it will generally reduce lateral grip and handling performance.

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