What are the biggest tires stock on a 2019 F350?
The largest factory-installed tires for a 2019 Ford F-350 Super Duty are typically around 33 inches in diameter, with common OEM sizes being LT275/65R18 on 18-inch wheels and LT275/60R20 on 20-inch wheels. Exact sizes depend on trim and wheel option, so check your vehicle’s door placard or window sticker to confirm.
Understanding OEM tire sizing on the F-350
Ford offered several wheel diameters and corresponding tire sizes across the 2019 F-350 lineup. The biggest stock tires are tied to the wheel size installed from the factory, and some trims or packages may use slightly different but still OEM-approved sizes. Always verify with the official placard on the driver’s door jamb or the original window sticker for your exact configuration.
Largest stock tires by wheel size
Below are the typical largest factory options associated with each common wheel diameter for the 2019 F-350. The sizes listed are those most often seen as original equipment on factory builds; individual trucks may vary by trim or package.
18-inch wheel configurations
- LT275/65R18
Conclusion: On 18-inch wheels, the largest OEM tire size commonly installed is around 32 inches in overall diameter, depending on the exact sidewall height and tire model. This configuration balances payload with ride quality for many mid-range trims.
20-inch wheel configurations
- LT275/60R20
Conclusion: On 20-inch wheels, the largest OEM tire size typically reaches about 33 inches in overall diameter, providing a more aggressive look while maintaining towing and load characteristics on higher-trim models.
Other notes on factory options
Some trims or packages may offer alternative OEM sizes that stay within Ford’s factory specifications, such as different 18-inch or 20-inch tire models. However, these are still considered stock if they were part of the original factory configuration for that truck. For any aftermarket upgrade beyond these sizes, additional considerations about clearance, suspension, and warranty may apply.
How to verify your exact tire size
To confirm the biggest stock tires on your specific 2019 F-350, use these steps:
- Check the door jamb placard for the recommended tire size for your vehicle as built.
- Inspect the tire sidewall on the current tires for the size code (e.g., LT275/65R18 or LT275/60R20).
- Consult the window sticker or the original build sheet if available.
Conclusion: The most reliable way to know your truck’s stock tire size is to reference the official placard or build documentation for your exact vehicle configuration.
Summary
The 2019 Ford F-350’s biggest stock tires are determined by wheel size: LT275/65R18 on 18-inch wheels and LT275/60R20 on 20-inch wheels are among the largest factory options commonly found on that model year. Always verify your specific tire size on the door placard or build sheet, and remember that substantial aftermarket tire upgrades (e.g., much larger than stock) may require suspension work and could affect warranties and clearance.
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Are 33 tires the same as 285?
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What size tires are on a 2019 Ford F350 Super Duty?
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Can you put 35s on a stock F350?
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