2018 Ford F-250 Super Duty Tire Size
Your Ford was manufactured with different tire sizes. To determine the best tire size for your specific 2018 Ford F-250 Super Duty, we first need to determine your rim size. Please review the information below.
How to Determine Rim Size
Check your existing tires. Your Ford F-250 Super Duty's rim size is the number to the right of the R. In the example pictured here, the tire size fits 16-inch rims.
Rim Size Selection
Now that you know your rim size, make a selection below to filter your results.
17-Inch Rims
2018 Ford F-250 Super Duty
Your 2018 Ford F-250 Super Duty was manufactured with multiple tire sizes. Choose a tire size below to get a color-coded explanation of the differences. Then pick the best tire size for your 2018 Ford F-250 Super Duty.
Trim Options:
XL 4x2XL 4x4XL 4x4 w/Snow Plow Pkg.XLT 4x2XLT 4x4XLT 4x4 w/Snow Plow Pkg.
LT245/75R17/E 121
Simplified Size: 245-75-17
Simplified size is useful for shopping and buying tires.
The original tire size for your 2018 Ford F-250 Super Duty is LT245/75R17/E 121R. A color-coded explanation of the 2018 Ford F-250 Super Duty's tire size is shown below.
LT | This letter denotes the intended use of the tire.
| ||||||
245 | This number indicates that your tire has a width of 245 millimeters. | ||||||
17 | The tire size was designed to fit rims or wheels that are 17 inches in diameter. | ||||||
121 | This tire has a load index of 121, which means it's capable of carrying a load of 3190 pounds (1450 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||
E | The mark of E denotes your tire's load range, or ply rating. A load range of E means that the tire has a ply rating of 10. Letters further along in the alphabet represent stronger tires that can sustain higher inflation pressures. Tires with higher inflation pressures can carry heavier loads. | ||||||
75 | This number means that your tire has an aspect ratio of 75%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 75% of the width. In this case, the sidewall height works out to be 183 millimeters. | ||||||
R | This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
| ||||||
This tire has a speed rating of R, which means 105 mph (170 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. |
Trim Options:
XL 4x2XL 4x4XL 4x4 w/Snow Plow Pkg.XLT 4x2XLT 4x4XLT 4x4 w/Snow Plow Pkg.
LT265/70R17/E 121
Simplified Size: 265-70-17
Simplified size is useful for shopping and buying tires.
The original tire size for your 2018 Ford F-250 Super Duty is LT265/70R17/E 121R. A color-coded explanation of the 2018 Ford F-250 Super Duty's tire size is shown below.
LT | This letter denotes the intended use of the tire.
| ||||||
265 | This number indicates that your tire has a width of 265 millimeters. | ||||||
17 | The tire size was designed to fit rims or wheels that are 17 inches in diameter. | ||||||
121 | This tire has a load index of 121, which means it's capable of carrying a load of 3190 pounds (1450 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||
E | The mark of E denotes your tire's load range, or ply rating. A load range of E means that the tire has a ply rating of 10. Letters further along in the alphabet represent stronger tires that can sustain higher inflation pressures. Tires with higher inflation pressures can carry heavier loads. | ||||||
70 | 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. | ||||||
R | This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
| ||||||
This tire has a speed rating of R, which means 105 mph (170 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. |
18-Inch Rims
2018 Ford F-250 Super Duty
There are multiple tire sizes for your 2018 Ford F-250 Super Duty that depend upon the trim level. Look for your trim level below to get a color-coded explanation of your tire size. Then pick the best tire size for your 2018 Ford F-250 Super Duty.
Trim Options:
King Ranch 4x2King Ranch 4x4Lariat 4x2Lariat 4x4Lariat 4x4 w/Snow Plow Pkg.XL 4x2XL 4x4XL 4x4 w/Snow Plow Pkg.XLT 4x2XLT 4x4XLT 4x4 w/Snow Plow Pkg.
LT275/65R18/E 123
Simplified Size: 275-65-18
Simplified size is useful for shopping and buying tires.
The original tire size for your 2018 Ford F-250 Super Duty is LT275/65R18/E 123S. A color-coded explanation of the 2018 Ford F-250 Super Duty's tire size is shown below.
LT | This letter denotes the intended use of the tire.
| ||||||
275 | This number indicates that your tire has a width of 275 millimeters. | ||||||
18 | The tire size was designed to fit rims or wheels that are 18 inches in diameter. | ||||||
123 | This tire has a load index of 123, which means it's capable of carrying a load of 3410 pounds (1550 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||
E | The mark of E denotes your tire's load range, or ply rating. A load range of E means that the tire has a ply rating of 10. Letters further along in the alphabet represent stronger tires that can sustain higher inflation pressures. Tires with higher inflation pressures can carry heavier loads. | ||||||
65 | This number means that your tire has an aspect ratio of 65%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 65% of the width. In this case, the sidewall height works out to be 178 millimeters. | ||||||
R | This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
| ||||||
This tire has a speed rating of S, which means 111 mph (180 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. |
Trim Options:
King Ranch 4x4Lariat 4x4Lariat 4x4 w/Snow Plow Pkg.XL 4x4XL 4x4 w/Snow Plow Pkg.XLT 4x4XLT 4x4 w/Snow Plow Pkg.
LT275/70R18/E 125
Simplified Size: 275-70-18
Simplified size is useful for shopping and buying tires.
The original tire size for your 2018 Ford F-250 Super Duty is LT275/70R18/E 125R. A color-coded explanation of the 2018 Ford F-250 Super Duty's tire size is shown below.
LT | This letter denotes the intended use of the tire.
| ||||||
275 | This number indicates that your tire has a width of 275 millimeters. | ||||||
18 | The tire size was designed to fit rims or wheels that are 18 inches in diameter. | ||||||
125 | This tire has a load index of 125, which means it's capable of carrying a load of 3630 pounds (1650 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||
E | The mark of E denotes your tire's load range, or ply rating. A load range of E means that the tire has a ply rating of 10. Letters further along in the alphabet represent stronger tires that can sustain higher inflation pressures. Tires with higher inflation pressures can carry heavier loads. | ||||||
70 | 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 192 millimeters. | ||||||
R | This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
| ||||||
This tire has a speed rating of R, which means 105 mph (170 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. |
20-Inch Rims
2018 Ford F-250 Super Duty
The original tire size for your 2018 Ford F-250 Super Duty is listed below. Tap on the box to view a color-coded explanation of your Ford F-250 Super Duty's' tire size.
Trim Options:
King Ranch 4x2King Ranch 4x4Lariat 4x2Lariat 4x4Lariat 4x4 w/Snow Plow Pkg.LimitedPlatinum
LT275/65R20/E 126
Simplified Size: 275-65-20
Simplified size is useful for shopping and buying tires.
The original tire size for your 2018 Ford F-250 Super Duty is LT275/65R20/E 126R. A color-coded explanation of the 2018 Ford F-250 Super Duty's tire size is shown below.
LT | This letter denotes the intended use of the tire.
| ||||||
275 | This number indicates that your tire has a width of 275 millimeters. | ||||||
20 | The tire size was designed to fit rims or wheels that are 20 inches in diameter. | ||||||
126 | This tire has a load index of 126, which means it's capable of carrying a load of NaN pounds (undefined kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||
E | The mark of E denotes your tire's load range, or ply rating. A load range of E means that the tire has a ply rating of 10. Letters further along in the alphabet represent stronger tires that can sustain higher inflation pressures. Tires with higher inflation pressures can carry heavier loads. | ||||||
65 | This number means that your tire has an aspect ratio of 65%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 65% of the width. In this case, the sidewall height works out to be 178 millimeters. | ||||||
R | This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
| ||||||
This tire has a speed rating of R, which means 105 mph (170 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. |