Why share your location?
Better pricing
Faster delivery
Verified local shops
275/70R18 Tire Size
All You Need To Know About 275/70R18 Tires
275/70R18 tires have a section width of 275 millimeters (mm), an aspect ratio of 70%, radial construction, and an 18-inch wheel diameter. The 275/70R18 tire size has an overall diameter of 33.2 inches (rounded from 33.16") and fits within a 7.0’’-9.0’’ rim width range, making it a common fitment for full-size pickup trucks and body-on-frame SUVs.
275/70R18 Size Quick Specs
- Overall diameter: 33.2 in
- Sidewall height: 7.6 in
- Section width: 275 mm
- Rim width range: 7.0-9.0 in
- Wheel diameter: 18 in
A 275/70R18 tire is approximately 33.2 inches tall. The calculated overall diameter of a 275/70R18 tire comes often rounded from 33.16". Actual mounted diameter may vary slightly (±0.1–0.3 inches) depending on manufacturer, tread design, and load rating.
Common Vehicle Fitments For 275/70R18 Size
- Ford F-150 (popular aftermarket upgrade from factory 275/65R18; fits stock 18" wheels without suspension modification on select trims)
- Chevrolet Silverado 1500 / GMC Sierra 1500 (OEM and common replacement fitment on select trims with 18" wheels)
- Ram 1500 (factory and replacement size on select trims with 18" wheels)
- Toyota Tundra (2007–2021, common OEM-equivalent and aftermarket fitment on 18" configurations)
- Nissan Titan (select trims with factory 18" wheels)
Recommended 275/70R18 Tires
Best All season 275 70r18 tires: Kumho Crugen HT51, Hercules Terra Trac Cross-V AW, Nexen Roadian HTX 2
Best 275/70R18 All Terrain tires: Falken Wildpeak A/T4W, Yokohama Geolandar A/T4, Toyo Open Country A/T III
Dimensions of 275/70R18 Tires in Inches
275/70R18 tires have a section width of 10.83" (≈ 10.8"), a sidewall height of 7.58" (rounded to ≈ 7.6"), and a wheel diameter of 18 inches. The overall tire diameter is ≈ 33.2" (often rounded from 33.16"), and the circumference is 104.16" (≈ 104.2").
In inches, the 275/70R18 tire size can be represented as 33.2" × 10.8" R18. In the truck world, this size is considered a "33-inch tire", even though it's technically a fraction taller than a standard 33x12.50.
275/70R18 tire size in millimeters and inches is presented in the table below:
275/70R18 Tire Size Dimensions | 275/70R18 Tire Size Dimensions in Inches (") | Formula to Convert 275/70R18 Size in Inches (") |
275 mm (section width) | 10.83" (≈ 10.8") | 275 ÷ 25.4 = 10.83 |
192.50 mm (sidewall height) | 7.58" (≈ 7.6") | (275 × 0.70) ÷ 25.4 = 7.58 |
18 (rim diameter) | 18" | Given |
842.20 mm (overall diameter) | 33.16" (≈ 33.2") | (2 × 192.50 ÷ 25.4) + 18 = 33.16 |
2646.16 mm (circumference) | 104.16" (≈ 104.2") | 33.16 × 3.1416 = 104.16 |
421.10 mm (radius) | 16.58" (≈ 16.6") | 33.16 ÷ 2 = 16.58 |
Comparison of 275/70R18 With Similar Tire Sizes
Compare 275/70R18 with other tire sizes, such as 285/65R18 and 275/65R18, to learn the key differences between them and make the right choice when buying new tires.
What Is The Difference Between 275/70R18 vs 285/65R18?
The main differences between 275/70R18 and 285/65R18 are the footprint width and the total height. The 275/70R18 tire is 0.39" (10 mm) narrower, but its higher aspect ratio provides a 0.28" taller sidewall. This results in an overall diameter of 33.16", making it 0.57" taller than the 285/65R18.
Summary Table comparing 275/70R18 and 285/65R18 tire sizes:
Tire dimensions | 275/70R18 dimensions in mm and inches (") | 285/65R18 dimensions in mm and inches (") | Difference in mm and inches (") | Percentage ≈ difference |
Section Width | 275 mm (≈ 10.83") | 285 mm (≈ 11.22") | 10 mm (≈ 0.39") | ≈ 3.6% |
Sidewall Height | 192.50 mm (≈ 7.58") | 185.25 mm (≈ 7.29") | 7.25 mm (≈ 0.29") | ≈ 3.9% |
Overall Diameter | 842.20 mm (≈ 33.16") | 831.20 mm (≈ 32.94") | 11.00 mm (≈ 0.43") | ≈ 1.3% |
Circumference | 2646.16 mm (≈ 104.16") | 2611.62 mm (≈ 102.82") | 34.54 mm (≈ 1.36") | ≈ 1.3% |
Radius | 421.10 mm (≈ 16.58") | 415.60 mm (≈ 16.36") | 5.50 mm (≈ 0.22") | ≈ 1.3% |
Rim Diameter | 457.2 mm (18.00") | 457.2 mm (18.00") | - | - |
Rim width range | 7.0’’–9.0’’ | 8.0’’–10.0’’ | - | - |
What Is The Difference Between 275/70R18 vs 275/65R18?
The main difference between 275/70R18 and 275/65R18 is the sidewall height. The 275/70R18 tire has a 0.54" (≈ 13.75 mm) taller sidewall, resulting in a 1.08" (≈ 27.50 mm) larger overall diameter compared to the 275/65R18 size.
Summary Table comparing 275/70R18 and 275/65R18 tire sizes:
Tire dimensions | 275/70R18 dimensions in mm and inches (") | 275/65R18 dimensions in mm and inches (") | Difference in mm and inches (") | Percentage ≈ difference |
Section Width | 275 mm (≈ 10.83") | 275 mm (≈ 10.83") | - | - |
Sidewall Height | 192.50 mm (≈ 7.58") | 178.75 mm (≈ 7.04") | 13.75 mm (≈ 0.54") | ≈ 7.7% |
Overall Diameter | 842.20 mm (≈ 33.16") | 814.70 mm (≈ 32.08") | 27.50 mm (≈ 1.08") | ≈ 3.3% |
Circumference | 2646.16 mm (≈ 104.16") | 2559.02 mm (≈ 100.75") | 87.14 mm (≈ 3.43") | ≈ 3.3% |
Radius | 421.10 mm (≈ 16.58") | 407.35 mm (≈ 16.04") | 13.75 mm (≈ 0.54") | ≈ 3.3% |
Rim Diameter | 457.2 mm (18.00") | 457.2 mm (18.00") | - | - |
Rim width range | 7.0’’–9.0’’ | 7.5’’–9.5’’ | - | - |
All You Need To Know About 275/70R18 Tires
275/70R18 tires have a section width of 275 millimeters (mm), an aspect ratio of 70%, radial construction, and an 18-inch wheel diameter. The 275/70R18 tire size has an overall diameter of 33.2 inches (rounded from 33.16") and fits within a 7.0’’-9.0’’ rim width range, making it a common fitment for full-size pickup trucks and body-on-frame SUVs.
275/70R18 Size Quick Specs
- Overall diameter: 33.2 in
- Sidewall height: 7.6 in
- Section width: 275 mm
- Rim width range: 7.0-9.0 in
- Wheel diameter: 18 in
A 275/70R18 tire is approximately 33.2 inches tall. The calculated overall diameter of a 275/70R18 tire comes often rounded from 33.16". Actual mounted diameter may vary slightly (±0.1–0.3 inches) depending on manufacturer, tread design, and load rating.
Common Vehicle Fitments For 275/70R18 Size
- Ford F-150 (popular aftermarket upgrade from factory 275/65R18; fits stock 18" wheels without suspension modification on select trims)
- Chevrolet Silverado 1500 / GMC Sierra 1500 (OEM and common replacement fitment on select trims with 18" wheels)
- Ram 1500 (factory and replacement size on select trims with 18" wheels)
- Toyota Tundra (2007–2021, common OEM-equivalent and aftermarket fitment on 18" configurations)
- Nissan Titan (select trims with factory 18" wheels)
Recommended 275/70R18 Tires
Best All season 275 70r18 tires: Kumho Crugen HT51, Hercules Terra Trac Cross-V AW, Nexen Roadian HTX 2
Best 275/70R18 All Terrain tires: Falken Wildpeak A/T4W, Yokohama Geolandar A/T4, Toyo Open Country A/T III
Dimensions of 275/70R18 Tires in Inches
275/70R18 tires have a section width of 10.83" (≈ 10.8"), a sidewall height of 7.58" (rounded to ≈ 7.6"), and a wheel diameter of 18 inches. The overall tire diameter is ≈ 33.2" (often rounded from 33.16"), and the circumference is 104.16" (≈ 104.2").
In inches, the 275/70R18 tire size can be represented as 33.2" × 10.8" R18. In the truck world, this size is considered a "33-inch tire", even though it's technically a fraction taller than a standard 33x12.50.
275/70R18 tire size in millimeters and inches is presented in the table below:
275/70R18 Tire Size Dimensions | 275/70R18 Tire Size Dimensions in Inches (") | Formula to Convert 275/70R18 Size in Inches (") |
275 mm (section width) | 10.83" (≈ 10.8") | 275 ÷ 25.4 = 10.83 |
192.50 mm (sidewall height) | 7.58" (≈ 7.6") | (275 × 0.70) ÷ 25.4 = 7.58 |
18 (rim diameter) | 18" | Given |
842.20 mm (overall diameter) | 33.16" (≈ 33.2") | (2 × 192.50 ÷ 25.4) + 18 = 33.16 |
2646.16 mm (circumference) | 104.16" (≈ 104.2") | 33.16 × 3.1416 = 104.16 |
421.10 mm (radius) | 16.58" (≈ 16.6") | 33.16 ÷ 2 = 16.58 |
Comparison of 275/70R18 With Similar Tire Sizes
Compare 275/70R18 with other tire sizes, such as 285/65R18 and 275/65R18, to learn the key differences between them and make the right choice when buying new tires.
What Is The Difference Between 275/70R18 vs 285/65R18?
The main differences between 275/70R18 and 285/65R18 are the footprint width and the total height. The 275/70R18 tire is 0.39" (10 mm) narrower, but its higher aspect ratio provides a 0.28" taller sidewall. This results in an overall diameter of 33.16", making it 0.57" taller than the 285/65R18.
Summary Table comparing 275/70R18 and 285/65R18 tire sizes:
Tire dimensions | 275/70R18 dimensions in mm and inches (") | 285/65R18 dimensions in mm and inches (") | Difference in mm and inches (") | Percentage ≈ difference |
Section Width | 275 mm (≈ 10.83") | 285 mm (≈ 11.22") | 10 mm (≈ 0.39") | ≈ 3.6% |
Sidewall Height | 192.50 mm (≈ 7.58") | 185.25 mm (≈ 7.29") | 7.25 mm (≈ 0.29") | ≈ 3.9% |
Overall Diameter | 842.20 mm (≈ 33.16") | 831.20 mm (≈ 32.94") | 11.00 mm (≈ 0.43") | ≈ 1.3% |
Circumference | 2646.16 mm (≈ 104.16") | 2611.62 mm (≈ 102.82") | 34.54 mm (≈ 1.36") | ≈ 1.3% |
Radius | 421.10 mm (≈ 16.58") | 415.60 mm (≈ 16.36") | 5.50 mm (≈ 0.22") | ≈ 1.3% |
Rim Diameter | 457.2 mm (18.00") | 457.2 mm (18.00") | - | - |
Rim width range | 7.0’’–9.0’’ | 8.0’’–10.0’’ | - | - |
What Is The Difference Between 275/70R18 vs 275/65R18?
The main difference between 275/70R18 and 275/65R18 is the sidewall height. The 275/70R18 tire has a 0.54" (≈ 13.75 mm) taller sidewall, resulting in a 1.08" (≈ 27.50 mm) larger overall diameter compared to the 275/65R18 size.
Summary Table comparing 275/70R18 and 275/65R18 tire sizes:
Tire dimensions | 275/70R18 dimensions in mm and inches (") | 275/65R18 dimensions in mm and inches (") | Difference in mm and inches (") | Percentage ≈ difference |
Section Width | 275 mm (≈ 10.83") | 275 mm (≈ 10.83") | - | - |
Sidewall Height | 192.50 mm (≈ 7.58") | 178.75 mm (≈ 7.04") | 13.75 mm (≈ 0.54") | ≈ 7.7% |
Overall Diameter | 842.20 mm (≈ 33.16") | 814.70 mm (≈ 32.08") | 27.50 mm (≈ 1.08") | ≈ 3.3% |
Circumference | 2646.16 mm (≈ 104.16") | 2559.02 mm (≈ 100.75") | 87.14 mm (≈ 3.43") | ≈ 3.3% |
Radius | 421.10 mm (≈ 16.58") | 407.35 mm (≈ 16.04") | 13.75 mm (≈ 0.54") | ≈ 3.3% |
Rim Diameter | 457.2 mm (18.00") | 457.2 mm (18.00") | - | - |
Rim width range | 7.0’’–9.0’’ | 7.5’’–9.5’’ | - | - |
FAQ
Are 275/70R18 tires good for towing and hauling?
Can I use 275/65R18 instead of 275/70R18?
Can I use 285/65R18 instead of 275/70R18?
How tall is a 275/70R18 tire?
Is 275/70R18 the same as a 33-inch tire?
What rim width is compatible with 275/70R18 tires?
Need live support?
- Mon - Fri: 8am - 7pm ET
- Sat: 9am - 5pm ET
- Sun: Closed