2019 Ford F-350 Super Duty: Tire Size, Pressure & Specs Guide

The 2019 Ford F-350 Super Duty is a heavy-duty powerhouse built for towing, hauling, and serious work. Getting the right tires and maintaining proper tire pressure is crucial for safety, ride comfort, and maximum payload capacity. Whether you have a Single Rear Wheel (SRW) or Dual Rear Wheel (DRW) configuration, this guide covers everything you need to know about your truck's tire, wheel, and torque specs.

Quick Answer: 2019 Ford F-350 Tire & Wheel Specs

Here are the baseline specifications for the 2019 Ford F-350 Super Duty:

• OEM Tire Sizes: LT245/75R17 (Base/DRW), LT275/65R18 (Standard SRW), LT275/70R18, LT275/65R20
• Recommended Cold Tire Pressure: Typically 60-65 PSI (Front) / 70-80 PSI (Rear) depending on the configuration and payload (check driver's side door placard).
• Bolt Pattern: 8x170mm (SRW) / 8x200mm (DRW)
• Wheel Size: 17x6.5 (DRW), 17x7.5, 18x8, 20x8 (SRW)
• Load Index / Speed Rating: 121/118S to 125/122R (Load Range E is mandatory for F-350s)
• Spare Tire Size: Full-size matching spare (check underbed hoist)
• TPMS Frequency: 315 MHz (Ford standard)

Tire Sizes by Trim

The 2019 Ford F-350 offers several trims and configurations (XL, XLT, Lariat, King Ranch, Platinum, Limited). Note that Dual Rear Wheel (DRW) models use different, narrower tires than Single Rear Wheel (SRW) models.

Always verify your specific truck's sizing by checking the sidewall of your current tires or the door jamb sticker.

Recommended Replacement Tires

When outfitting a heavy-duty truck like the F-350, you must choose tires with a Load Range E (10-ply rating) to safely support the vehicle's weight and payload capabilities. Here are some of the best options on the market:

1. Michelin Defender LTX M/S (Premium Tier) The gold standard for highway driving, towing, and longevity. Excellent tread life and quiet ride under load.
2. BFGoodrich All-Terrain T/A KO2 (Premium Tier) A top choice for F-350 owners who frequently navigate job sites, mud, or snow. Exceptionally tough sidewalls and Severe Snow Rated (3PMSF).
3. Falken Wildpeak A/T3W (Mid-Tier) Offers fantastic wet-weather performance, off-road grip, and a long-lasting tread compound at a slightly lower price point than the BFGs.
4. Cooper Discoverer HT3 (Budget/Mid-Tier) A highly durable commercial highway tire that handles heavy hauling incredibly well while keeping costs reasonable.

When to Inflate to Max Load PSI

Because the F-350 is a Heavy Duty truck, tire pressure management is a bit different than a passenger car.

• Unloaded/Daily Driving: You can safely run closer to 60 PSI front and 65 PSI rear to soften the harsh ride of a 1-ton truck.
• Max Load/Towing: When hooking up a fifth-wheel, gooseneck, or loading the bed to capacity, you must inflate the rear tires to the maximum cold pressure listed on the door placard (usually 80 PSI for Load Range E tires). This prevents the tire sidewalls from flexing, overheating, and potentially blowing out under extreme weight.

Pro Tip: Never exceed the "Max Cold Press" molded directly onto the tire's sidewall.

Lug Nut Torque & Pattern

Getting the lug nuts torqued properly on a 1-ton truck is paramount. A loose wheel on an F-350 towing a 15,000-pound trailer is a recipe for disaster.

• Bolt Pattern: 8x170mm for SRW trucks; 8x200mm for DRW trucks.
• Lug Nut Torque: 165 lb-ft (224 Nm) for both SRW and DRW setups.
• Socket Size: Typically a 21mm socket.

Always use a calibrated torque wrench, tighten in a star pattern, and re-torque the wheels after 50 to 100 miles of driving following a wheel installation.

Common Tire Issues for This Vehicle

• Uneven Front Tire Wear: Heavy diesel engines (like the 6.7L Power Stroke) put tremendous weight on the front end. This can lead to accelerated shoulder wear or cupping if the alignment is even slightly out of spec. Regular rotations (every 5,000 miles) and alignments are vital.
• "Death Wobble": While primarily a track bar and steering component issue, out-of-balance or severely cupped front tires can trigger or exacerbate the infamous solid-axle steering oscillation. Keep your front tires perfectly balanced.
• TPMS Sensor Failure: By 2019, many factory TPMS batteries are starting to near the end of their 5-7 year lifespan. If your light flashes for 60 seconds on startup, you likely have a dead sensor (315 MHz).

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