2015 Ford F-350 Super Duty: Tire Size, Pressure & Specs

Quick answer

• OEM tire size: LT275/65R18, LT275/70R18, LT265/75R17 & LT245/75R17
• Recommended cold tire pressure (door placard): 65 psi (front), 80 psi (rear) for LT275/70R18
• Bolt pattern: 8x170mm (8x6.7 in.)
• Wheel size: 17x7.5", 18x8", or 20x8"
• Load index/speed rating: 121/118S, 125/122R
• Spare tire size: Full-size spare, typically LT275/70R18
• TPMS frequency: 315 MHz

Tire sizes by trim

Recommended replacement tires

• Goodyear Wrangler All-Terrain Adventure w/Kevlar ($$): A popular OEM choice, this tire offers a good balance of on-road comfort and off-road traction. The Kevlar layer provides extra durability for heavy-duty use.
• Michelin Defender LTX M/S ($$$): A premium highway tire known for its long tread life, quiet ride, and excellent wet traction. It's a great option if you spend most of your time on paved roads.
• BFGoodrich All-Terrain T/A KO2 ($$$): A legendary all-terrain tire with an aggressive tread pattern for maximum off-road grip. It's a favorite among truck enthusiasts for its durability and performance in tough conditions.
• Cooper Discoverer AT3 XLT ($$): A strong contender in the all-terrain category, the AT3 XLT offers a great blend of on- and off-road performance with a focus on tread life and durability for heavy-duty trucks.

When to inflate to max load psi

For heavy-duty trucks like the F-350, inflating tires to the maximum pressure listed on the tire's sidewall is recommended only when hauling heavy loads or towing. This ensures the tires can support the weight and prevents excessive heat buildup, which can lead to a blowout. For daily driving without a heavy load, stick to the pressures listed on the door placard for a more comfortable ride and even tread wear.

Lug nut torque & pattern

• Lug nut torque: 165 lb-ft (224 Nm)
• Tightening pattern: Use a star or criss-cross pattern to ensure the wheel is seated evenly against the hub.

Common tire issues for this vehicle

• "Death wobble": While not strictly a tire issue, worn or unbalanced tires can contribute to the infamous "death wobble" in Super Duty trucks. This violent shaking of the front end is often caused by a combination of factors, including worn suspension components, but proper tire maintenance is a key preventative measure.
• TPMS sensor faults: The F-350 uses a 315 MHz TPMS system. Over time, the batteries in the sensors can die, causing a warning light on the dash. When replacing tires, it's a good idea to have the sensors checked and replaced if necessary.
• Uneven wear: Due to its weight and solid front axle, the F-350 can be prone to uneven tire wear, especially on the front tires. Regular rotations (every 5,000–7,500 miles) are crucial to maximizing tire life.

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