Understanding ram trucks tire size is fundamental for any Ram owner who values performance, safety, and efficiency. The rubber that connects your vehicle to the road dictates handling characteristics, load capacity, and even fuel economy. Choosing the correct diameter, width, and construction ensures your Ram performs as intended, whether you are navigating city streets or towing a trailer through rugged terrain.
Factory Specifications by Model and Year
Ram trucks are offered in a diverse lineup, ranging from the light-duty Ram 1500 to the heavy-duty Ram 5500, and each platform comes with specific OEM tire dimensions. These specifications are designed to balance comfort, capability, and durability based on the truck's intended role. You can usually find the recommended size printed on a sticker located inside the driver’s door jamb or detailed in the vehicle’s owner manual.
Light-Duty Options (Ram 1500 and Ram 1500 TRX)
The Ram 1500 typically rolls off the lot wearing 17-inch or 18-inch all-season tires, with common sizes including P245/70R17 and P265/70R17. The high-performance Ram 1500 TRX, however, utilizes larger 33-inch all-terrain tires to handle its supercharged V8 and extreme off-road scenarios. These larger footprints provide the necessary traction for aggressive driving styles and challenging environments.
Medium-Duty and Heavy-Duty Models (Ram 2500 and Ram 3500)
For those who need to haul substantial payloads or tow massive loads, the Ram 2500 and Ram 3500 require larger tire packages. It is common to find these models equipped with 20-inch or 22-inch wheels shod with LT (Light Truck) tires. Popular sizes for these work trucks include 265/70R20 and 315/70R22, depending on whether the truck is configured for standard payload or maximum towing capacity.
Deciphering the Tire Size Code
When shopping for new wheels or reading the sidewall of your current tires, the series of letters and numbers can seem like alphabet soup. This code is a precise language that describes the tire’s function, dimensions, and construction. Breaking down this code allows you to match replacements accurately and understand the capabilities of your current setup.
LT vs. P: The first letter is critical. "LT" stands for Light Truck, indicating a heavy-duty tire built for trucks and SUVs that carry weight. "P" stands for Passenger car tire, which is generally lighter and designed for commuter vehicles.
Width: The first number (e.g., 265) represents the tire's width in millimeters from sidewall to sidewall when measured properly.
Aspect Ratio: The number following the slash (e.g., 70) is the aspect ratio, which is the height of the tire's sidewall as a percentage of its width.
Rim Diameter: The final number (e.g., 20) indicates the diameter of the wheel's inner hole, measured in inches. This ensures the tire fits securely on your specific rim.
Performance and Handling Implications
Tire size is not just about fitting the wheel; it directly influences how your Ram drives. A taller tire with a higher aspect ratio increases the vehicle's overall height and ground clearance, which is beneficial for off-roading but can slightly alter the steering feel and acceleration response. Conversely, a wider, lower-profile tire improves cornering grip and braking performance, which is ideal for highway towing and spirited on-road driving.
