2021 Ram 1500: Tire Size, Pressure, & Wheel Specs

Quick Answer

• OEM Tire Size: 275/65R18 (Tradesman, Big Horn/Lone Star), 275/55R20 (Laramie, Rebel, Longhorn, Limited, TRX), 285/45R22 (Limited with optional 22-inch wheels)
• Recommended Cold Tire Pressure (Door Placard): Typically 33-38 PSI front and rear, check your specific vehicle's door jamb sticker.
• Bolt Pattern: 6x139.7mm (6x5.5 inches)
• Wheel Size: 18x8", 20x9", 22x9"
• Load Index/Speed Rating: Varies by tire, but typically 113T-116T for 18-20 inch wheels, and 117H for 22 inch wheels.
• Spare Tire Size: Full-size spare, often matching one of the OEM sizes (e.g., 275/65R18 or 275/55R20)
• TPMS Frequency: 433 MHz

Tire Sizes by Trim

Recommended Replacement Tires

Choosing the right replacement tires for your 2021 Ram 1500 depends on your driving habits, local climate, and budget. Here are a few popular options across different price tiers:

• Michelin Defender LTX M/S (Premium): A fantastic all-season highway tire known for its longevity, quiet ride, and excellent wet and dry traction. Expect to pay around $250-$350 per tire, depending on size.
• BFGoodrich All-Terrain T/A KO2 (Mid-Range/Off-Road): A legendary all-terrain tire perfect for drivers who venture off-road or deal with snow and rough conditions. They offer aggressive looks and great durability. Prices typically range from $220-$320 per tire.
• Falken Wildpeak A/T3W (Value/All-Terrain): A great all-around performer that offers a balance of on-road comfort and off-road capability at a more budget-friendly price point. These often fall in the $180-$280 range per tire.
• Continental TerrainContact A/T (Premium All-Season): Another excellent all-season option providing a comfortable ride, good handling, and confident traction in various conditions. Often priced similarly to the Michelin Defender LTX M/S.

When to Inflate to Max Load PSI

While the 2021 Ram 1500 is a capable full-size truck, it's important to clarify that it is not a heavy-duty (HD) truck in the same class as a Ram 2500 or 3500. Therefore, you generally should not inflate your tires to the "max load" PSI listed on the tire's sidewall.

For your 2021 Ram 1500, always refer to the tire pressure placard located on the driver's side door jamb. This placard provides the recommended cold tire inflation pressure for your specific vehicle configuration, considering its Gross Vehicle Weight Rating (GVWR) and Gross Axle Weight Rating (GAWR). Inflating to the max load PSI on the sidewall can lead to:

• A harsh and uncomfortable ride
• Reduced tire contact patch, leading to decreased traction and braking performance
• Uneven tire wear (center wear)
• Increased risk of tire damage from impacts

Only in specific heavy-duty towing or hauling scenarios where your vehicle