What size tires will fit on a stock F-250?

The exact tire size that fits a stock Ford F-250 depends on the model year and factory wheel package; there isn’t a single universal size. Generally, stock trucks came with wheels ranging from 16 to 20 inches, with tire sizes spanning roughly from LT245/75R16 up to LT275/65R18 or LT275/60R20, depending on the build.

To determine the precise size for your specific F-250, check the tire placard on the driver’s door jamb, consult your owner’s manual, or reference the build sheet/VIN. Stick to the factory size for the best balance of performance, clearance, and accuracy, or plan upgrades with awareness of clearance, gearing, and calibration implications.

Stock tire sizes by wheel diameter

The following list shows common stock sizes associated with different factory wheel diameters. Note that actual sizes can vary by year, trim, and option packages; always confirm with the door placard.

• 16-inch wheels: LT245/75R16 or LT265/75R16 (Load Range E typical for many configurations).


• 17-inch wheels: LT265/70R17.


• 18-inch wheels: LT275/65R18 (some trims also used LT275/70R18).


• 20-inch wheels: LT275/60R20 (certain builds may use closely related sizes like P275/60R20).

These represent common stock configurations and provide a practical baseline for what Ford has used across generations. Your exact year and option package may differ, so always verify with the factory specifications.

Year-by-year notes

Because Ford updated wheel options and trim-specific packages over time, the precise stock size can shift from generation to generation. If you’re restoring a classic or purchasing a used truck, check the original window sticker or the VIN-based build sheet to confirm the exact factory tire size that was installed from the factory.

Upgrading beyond stock: what to know

Before you upgrade beyond the factory size, consider how the change will affect fit, handling, and accuracy. The following points help guide safe and reliable choices.

• Clearance: Larger tires can rub against fenders, springs, control arms, or steering linkage, especially when the suspension compresses or during full turns.


• Speedometer and odometer: Changing tire diameter alters the actual speed and distance traveled relative to the speedometer reading; larger tires can cause readings to be off unless corrected.


• Load and speed ratings: Ensure the chosen tire maintains or exceeds the OEM load rating for your GVWR and has an appropriate speed rating for typical highway use.


• Suspension and gearing: Substantial increases in tire diameter may require leveling or lift and, in some cases, gearing changes to avoid rubbing and to maintain performance.


• Legal and warranty considerations: Very large upgrades can affect warranty coverage and may have regulatory implications in some regions.

In practice, many owners stay within one size up (for example, from LT245/75R16 to LT265/75R16 or LT275/65R18 to LT275/70R18) with minimal modification. More aggressive upgrades should be planned with professional fitment checks to ensure proper clearance and drivetrain compatibility.

Summary

To determine the exact tire size for a stock Ford F-250, always check the door placard and the owner’s manual for the precise factory specification tied to your trim and year. While common stock diameters range from 16 through 20 inches, the optimal choice depends on your specific truck configuration and intended use. Verification with the original specifications ensures correct fitment and reliable performance.

Will 37 tires fit on a stock F-250?

No, 37-inch tires generally will not fit on a stock F-250 without modification. While some models (like the 2023+ Super Duty) have increased clearance, you will likely experience some rubbing, especially at full lock on the radius arms, sway bar, or fender liner. A lift kit, a leveling kit, and potentially wider wheels or different offset wheels are typically required to fit 37-inch tires without rubbing.
 
Considerations for fitting 37-inch tires on an F-250:

• Leveling kit: A common solution is adding a 2.5-inch leveling kit to the front, which provides more clearance to avoid rubbing. 
• Width and offset: The tire's width is a major factor. Wider tires will increase the chance of rubbing on the radius arms and sway bar, even with a leveling kit. Using wheels with a negative offset (e.g., -12 to -18) can also help reduce rubbing. 
• Specific models and years: Some newer models, such as the 2023+ Super Duty, have improved clearance and can more easily fit 37-inch tires, sometimes even without rubbing depending on the tire width and wheel offset. 
• Steering components: It is recommended to upgrade steering components, like the steering stabilizer, when fitting larger tires. This can significantly improve your truck's control and prevent premature wear on front-end components. 

What to expect without a lift

• Rubbing: Even with just a leveling kit, you will likely experience some rubbing, though it may be minor and considered acceptable for the look. 
• Steering limitations: Turning at full lock will cause the tires to contact suspension components. 
• Minor modification: Some minor trimming of the fender liner or other parts may be necessary to prevent rubbing issues. 

In summary, while it may be possible to fit 37-inch tires with a leveling kit and careful wheel and tire selection, a stock F-250 is not designed to fit them without modification.

How big of a tire can you put on a stock F-250?

For everyone who repeatedly asks what's the biggest tire you can run, 37x11. 5. It fits with no leveling kit on stock wheels with zero rubbing or any other issue. This is a bone stock 2024 F250 XL with a 6.7.

Will 35 tires fit on a stock F-250?

The short answer is yes! You can easily fit 35-inch tires on your 2021 Ford F-250 without needing any suspension upgrades or bodywork alterations.

Is a 285 tire the same as a 33?

No, a 285 tire is not the same as a 33-inch tire because the numbers represent different dimensions: 285 refers to the tire's width in millimeters, while 33 inches typically refers to the overall height. However, a specific tire size like a 285/70R17 is close in height to a 33-inch tire, with an approximate overall diameter of 32.7 inches. 
Tire sizing explained

• 285: This number in a metric tire size (like 285/70R17) is the tire's width across the tread in millimeters. 
• 33: In common off-road tire terminology, "33" refers to the tire's approximate overall height in inches. 
• The middle number: The number in the middle of the metric size (e.g., 70 in 285/70R17) is the aspect ratio—the height of the tire's sidewall as a percentage of its width. 
• Putting it together: To find the overall diameter, you calculate the sidewall height (width multiplied by aspect ratio) and add it twice, then add the wheel diameter. 
  • For a 285/70R17:
    • Width: 285 mm≈11.22 inches285 mm is approximately equal to 11.22 inches285 mm≈11.22 inches 
    • Sidewall height: 11.22 inches×0.70≈7.85 inches11.22 inches cross 0.70 is approximately equal to 7.85 inches11.22 inches×0.70≈7.85 inches 
    • Total height: (7.85 inches×2)+17 inch wheel≈32.7 inchesopen paren 7.85 inches cross 2 close paren plus 17 inch wheel is approximately equal to 32.7 inches(7.85 inches×2)+17 inch wheel≈32.7 inches 
• Why the confusion: A 285/70R17 tire is frequently called a "33-inch" tire because its actual diameter is very close to 33 inches.