2014 Ford F-350 Super Duty: Tire Size, Pressure & Wheel Specs

Quick answer: 2014 Ford F-350 Tire & Wheel Specs

• OEM Tire Sizes: 275/65R18, LT275/70R18, and LT245/75R17
• Recommended Cold Tire Pressure (Front/Rear): 60–65 PSI (Front), 80 PSI (Rear) — Always check your driver's door jamb placard for pressures specific to your truck's configuration.
• Bolt Pattern: 8x170mm (8x6.7 in)
• Wheel Size: 17x7.5", 18x8", 20x8"
• Load Index & Speed Rating: 121/118S, 126/123R, and others depending on tire.
• Spare Tire Size: Full-size spare, typically matching the primary road tires (e.g., LT275/70R18).
• TPMS Frequency: 315 MHz

Tire Sizes by Trim

The 2014 F-350 was built for work, and its tire and wheel packages reflect that. Ford offered several configurations across the XL, XLT, Lariat, King Ranch, and Platinum trims, with options for both single rear wheel (SRW) and dual rear wheel (DRW) setups.

Note: The 'LT' prefix stands for Light Truck, and the 'E' suffix indicates Load Range E, which is standard for heavy-duty trucks like the F-350. These tires feature a 10-ply rating, providing the stiffness and strength needed for hauling and towing heavy loads.

Recommended Replacement Tires

Choosing the right tire for your F-350 depends on your primary use, whether that's highway cruising, towing, or off-road work. All replacement tires must be Load Range E or higher to meet safety standards.

• $$ - General Grabber HTS60: A popular and budget-friendly highway-terrain tire that offers a quiet ride, good all-season traction, and long tread life for daily driving and light towing.
• $$$ - Michelin Defender LTX M/S: A premium all-season highway tire known for its exceptional tread life, excellent wet and dry traction, and comfortable ride. It's a top choice for F-350 owners who spend most of their time on pavement.
• $$$ - BFGoodrich All-Terrain T/A KO2: For trucks that frequently see dirt, gravel, and job sites, the KO2 is the gold standard. It provides aggressive off-road traction and durability without completely sacrificing on-road manners.
• $$$$ - Goodyear Wrangler Duratrac: A rugged all-terrain tire that leans more towards off-road performance than the KO2. Its aggressive tread pattern excels in mud and snow, making it ideal for work trucks in demanding environments.

When to Inflate to Max Load PSI

Unlike passenger cars, the 2014 Ford F-350 has two primary tire pressure recommendations. The one on the door placard (e.g., 65 PSI front, 80 PSI rear) is for everyday, unloaded driving. This provides the safest handling and braking characteristics, along with the most comfortable ride.

However, when you are towing a heavy trailer or have loaded the bed to its maximum capacity, you should inflate the tires—especially the rears—to the maximum pressure indicated on the tire's sidewall. For most Load Range E tires, this is 80 PSI. This higher pressure provides the stiffness required to manage the weight, preventing excessive sidewall flex, reducing heat buildup, and ensuring stability. Once you've unloaded the truck, you should return the tires to the pressures listed on the door placard.

Lug Nut Torque & Pattern

Properly torquing the lug nuts is critical for safety on a heavy-duty truck.

• Torque Spec: 165 lb-ft (224 Nm)
• Lug Nut Socket Size: 21mm
• Tightening Pattern: Use a star or crisscross pattern to ensure the wheel is seated evenly against the hub. Tighten the lug nuts in stages, first snugging them down in sequence and then going over them again with a torque wrench set to the final spec.

Common Tire Issues for This Vehicle

The F-350 is a durable truck, but its weight and workhorse nature can lead to specific tire wear patterns. The most common issue is rapid or uneven wear on the front tires, often on the inner or outer edges. This is frequently caused by worn-out front-end components like ball joints, tie rod ends, or a bad alignment. Because of the solid front axle, these trucks require a precise alignment to keep tire wear in check. If you notice cupping or feathering on your front tires, have a qualified technician inspect your suspension and steering components before simply replacing the tires.

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