2005 Ford F250 Super Duty Tire Size
Your Ford was manufactured with different tire sizes. To determine the best tire size for your specific 2005 Ford F250 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 F250 Super Duty's rim size is the number to the right of the R. In the example pictured here, the tire size fits 16inch rims.
Rim Size Selection
Now that you know your rim size, make a selection below to filter your results.
17Inch Rims
2005 Ford F250 Super Duty
There are multiple tire sizes for your 2005 Ford F250 Super Duty that depend upon the trim level. Look for your trim level below to get a colorcoded explanation of your tire size. Then pick the best tire size for your 2005 Ford F250 Super Duty.
Trim Options:
XL 4x2 Crew CabXL 4x2 Reg. CabXL 4x2 Super CabXL 4x4
LT245/75R17/E
Simplified Size: 2457517
Simplified size is useful for shopping and buying tires.
The original tire size for your 2005 Ford F250 Super Duty is LT245/75R17/E . A colorcoded explanation of the 2005 Ford F250 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.  
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.

Trim Options:
Lariat 4x2Lariat 4x4XL 4x2 Crew CabXL 4x2 Reg. CabXL 4x2 Super CabXL 4x4XLT 4x2 Crew CabXLT 4x2 Reg. CabXLT 4x2 Super CabXLT 4x4
LT265/70R17/E
Simplified Size: 2657017
Simplified size is useful for shopping and buying tires.
The original tire size for your 2005 Ford F250 Super Duty is LT265/70R17/E . A colorcoded explanation of the 2005 Ford F250 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.  
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.

Trim Options:
FX4
LT265/70R17/E 121
Simplified Size: 2657017
Simplified size is useful for shopping and buying tires.
The original tire size for your 2005 Ford F250 Super Duty is LT265/70R17/E 121R. A colorcoded explanation of the 2005 Ford F250 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. 
Trim Options:
FX4
LT265/70R17/E 121
Simplified Size: 2657017
Simplified size is useful for shopping and buying tires.
The original tire size for your 2005 Ford F250 Super Duty is LT265/70R17/E 121S. A colorcoded explanation of the 2005 Ford F250 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 S, which means 111 mph (180 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. 
18Inch Rims
2005 Ford F250 Super Duty
There are multiple tire sizes for your 2005 Ford F250 Super Duty that depend upon the trim level. Look for your trim level below to get a colorcoded explanation of your tire size. Then pick the best tire size for your 2005 Ford F250 Super Duty.
Trim Options:
Lariat 4x2Lariat 4x4
LT275/65R18/E 123
Simplified Size: 2756518
Simplified size is useful for shopping and buying tires.
The original tire size for your 2005 Ford F250 Super Duty is LT275/65R18/E 123S. A colorcoded explanation of the 2005 Ford F250 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 4x2King Ranch 4x4
LT275/70R18/E 125
Simplified Size: 2757018
Simplified size is useful for shopping and buying tires.
The original tire size for your 2005 Ford F250 Super Duty is LT275/70R18/E 125S. A colorcoded explanation of the 2005 Ford F250 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 S, which means 111 mph (180 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. 
20Inch Rims
2005 Ford F250 Super Duty
The original tire size for your 2005 Ford F250 Super Duty is listed below. Tap on the box to view a colorcoded explanation of your Ford F250 Super Duty's' tire size.
Trim Options:
HarleyDavidson Edition
LT275/65R20/E 126
Simplified Size: 2756520
Simplified size is useful for shopping and buying tires.
The original tire size for your 2005 Ford F250 Super Duty is LT275/65R20/E 126S. A colorcoded explanation of the 2005 Ford F250 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 S, which means 111 mph (180 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. 