2022 Ram 3500 Tire Size & Pressure Specs

As an ASE-certified master technician, I’ve serviced countless heavy-duty trucks, and the 2022 Ram 3500 is a frequent visitor to the bays—usually for routine tire replacements or upgrades to handle massive payload and towing demands. Because this is a one-ton truck available in both Single Rear Wheel (SRW) and Dual Rear Wheel (DRW) configurations, getting your tire specifications right is critical for safety, performance, and legal compliance.

Here is everything you need to know about the 2022 Ram 3500’s tire sizes, pressures, and wheel specifications.

Quick answer: 2022 Ram 3500 Tire & Wheel Specs

• OEM Tire Size: LT235/80R17E (DRW), LT275/70R18E (SRW standard), LT285/60R20E (SRW optional)
• Recommended Cold Tire Pressure: Varies heavily by configuration. Typically 60-65 PSI Front / 65-80 PSI Rear. (Always check your driver-side door jamb placard!)
• Bolt Pattern: 8x165.1 mm (8x6.5") for SRW models; 8x200 mm for DRW models
• Wheel Size: 17x6 (DRW), 18x8.0 (SRW), 20x8.0 (SRW)
• Load Index/Speed Rating: Load Range E (10-ply rated), typically 121/118 or 125/122 load index. Speed ratings generally R, S, or T.
• Spare Tire Size: Full-size matching spare (steel wheel typically)
• TPMS Frequency: 433 MHz

Tire sizes by trim

The 2022 Ram 3500 is highly customizable. Depending on whether you choose a Tradesman, Laramie, Limited, or another trim, and whether it is an SRW or DRW (dually), the factory tire sizes differ.

Note: Always verify your specific truck’s equipment, as optional wheel packages were common across all trims.

Recommended replacement tires

When you're replacing tires on a one-ton workhorse, you need tires that can handle serious torque (especially with the Cummins diesel) and heavy loads. Here are my top recommendations based on real-world shop experience:

1. Michelin Defender LTX M/S (Premium Tier): The absolute gold standard for highway towing and longevity. Excellent wet traction, incredibly quiet, and they wear very evenly on HD trucks if rotated properly.
2. Falken Wildpeak A/T3W or A/T4W (Mid-to-Premium Tier): If you need an all-terrain tire that can handle job sites, gravel, and snow without sounding like a tractor on the highway, the Wildpeak is an exceptional Load Range E tire.
3. Firestone Transforce HT2 / AT2 (Budget-to-Mid Tier): Often equipped as OEM on Ram trucks. They are a solid, no-nonsense commercial tire for fleets that chew through tread and need cost-effective replacements.

When to inflate to max load psi

Because the Ram 3500 is a heavy-duty truck, tire pressure management is a bit different than a half-ton pickup. The sidewall of a Load Range E tire will state a maximum pressure of 80 PSI cold.

• Running Unloaded: Running 80 PSI in the rear tires when the bed is empty will result in a harsh ride, reduced traction, and accelerated center-tread wear. Refer to your door placard’s "light load" settings if provided, or generally stick closer to 60-65 PSI.
• Running Loaded/Towing: When towing a heavy fifth-wheel, gooseneck, or carrying a bed full of gravel, you should inflate your rear tires to the maximum placard pressure (often 80 PSI). This minimizes sidewall flex, reduces heat buildup (the #1 killer of HD tires), and provides maximum load capacity and stability.

Lug nut torque & pattern

Getting the lug nuts torqued correctly on a Ram 3500 is critical. Overtightening can stretch the studs, and under-tightening can lead to catastrophic wheel separation under load.

• SRW Pattern: 8x165.1 mm (8x6.5")
• DRW Pattern: 8x200 mm
• SRW Torque Spec: 130 ft-lbs
• DRW Torque Spec: 140 ft-lbs (Ensure flanged nuts on dually wheels are seated properly before final torque)

Technician Tip: Always use a calibrated torque wrench, and re-torque the wheels after 50-100 miles of driving.

Common tire issues for this vehicle

1. Dually "Kissing": On DRW models, if rear tire pressure drops too low while loaded, the dual tires can bulge and rub against each other at the bottom contact patch. This generates immense heat and will cause a blowout.
2. Rapid Front Tire Wear (Cummins Models): The 6.7L Cummins diesel engine is incredibly heavy. This weight puts severe stress on the front tires and suspension. Regular alignments and frequent tire rotations (every 5,000 to 7,500 miles) are mandatory to prevent premature edge wear.
3. TPMS Light with Changing Loads: Because owners frequently adjust pressures between unloaded driving and heavy towing, the TPMS system may trigger a low-pressure warning. Ensure your pressures match the loaded/unloaded thresholds programmed into your truck's system.

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