What is the rear axle ratio of a 2018 Ram 2500?
The rear axle ratio is a critical specification for any vehicle, especially for trucks like the 2018 Ram 2500. It determines the balance between towing capacity, fuel efficiency, and overall performance. In this article, we’ll explore what the rear axle ratio is, the options available for the 2018 Ram 2500, and why it matters for your driving needs.
What Is the Rear Axle Ratio?
The rear axle ratio refers to the number of revolutions the driveshaft makes in relation to one full rotation of the rear wheels. For example, a 3.73 axle ratio means the driveshaft turns 3.73 times for every single rotation of the rear wheels. This ratio directly impacts the vehicle's towing power and fuel efficiency.
Rear Axle Ratio Options for the 2018 Ram 2500
The 2018 Ram 2500 offers several rear axle ratio options, depending on the specific trim and configuration. These include:
- 3.73 Axle Ratio: This is the standard option for most configurations. It provides a good balance between towing capacity and fuel efficiency, making it ideal for general use.
- 4.10 Axle Ratio: Available as an upgrade, this ratio is designed for heavy-duty towing. It sacrifices some fuel efficiency for increased torque and pulling power.
- 3.42 Axle Ratio: Found in some diesel engine configurations, this ratio prioritizes fuel efficiency while still offering decent towing capabilities.
Why Does the Rear Axle Ratio Matter?
Choosing the right rear axle ratio for your 2018 Ram 2500 depends on how you plan to use the truck. Here’s why it matters:
- Towing Capacity: A higher axle ratio, like 4.10, increases the truck's ability to tow heavy loads by providing more torque to the wheels.
- Fuel Efficiency: Lower axle ratios, such as 3.42, reduce engine RPMs at highway speeds, improving fuel economy.
- Performance Balance: The 3.73 ratio offers a middle ground, making it a versatile choice for drivers who need both towing power and reasonable fuel efficiency.
How to Check Your Truck’s Rear Axle Ratio
If you’re unsure about the rear axle ratio of your 2018 Ram 2500, you can find this information in several ways:
- Check the vehicle’s build sheet or window sticker, which lists all factory specifications.
- Look for a tag on the rear axle housing, which often displays the ratio.
- Consult your owner’s manual or contact a Ram dealership for assistance.
Conclusion
The rear axle ratio of your 2018 Ram 2500 plays a significant role in determining its towing capabilities, fuel efficiency, and overall performance. Whether you’re hauling heavy loads or looking for a balance between power and economy, understanding your axle ratio options will help you make the most of your truck. If you have further questions or need assistance with your vehicle, feel free to reach out to Kevin’s Autos for expert advice and service!
Frequently Asked Questions
Is there a big difference between 3.21 and 3.92 axle ratio?
The standard 3.21 axle ratio then gets you a maximum tow rating of 8,440 pounds. Go with the 3.92 gearing and the tow rating jumps up to 11,540 pounds — a massive 3,100-pound difference.
What is the benefit of a 3.92 rear axle ratio?
By far the biggest advantage of the 3.92 will be getting that load moving from a stop. The 3.92 will give 20% more torque at the wheels in first gear. There may be other slight advantages in engine braking, having an additional usable gear and working the transmission a little less when towing. Slight.
What is the specs of the 2018 RAM 2500 6.7 L?
The range-topping 6.7-liter Cummins turbodiesel I-6 engine is rated at 350 hp and 660 lb-ft of torque with the six-speed manual transmission but gets an increase with the six-speed automatic transmission to 370 hp and 800 lb-ft of torque. All models are available with rear- or four-wheel drive.
What axle ratio is best for towing?
A numerically higher axle ratio provides a mechanical advantage to send more of the engine's available torque to the rear tires (and front tires, in a four-wheel drive vehicle), but you pay the price at the fuel pump. So, a truck with optional 3.73 gears will tow a heavier trailer than one with 3.55 or 3.21.
What is the axle ratio for the 2018 Ram 2500?
To give buyers options, the Ram 2500 is available with a 3.42, 3.73 or a 4.10 axle ratio and a 4×2 or 4×4 drivetrain, except the Ram 2500 Power Wagon is only available with a 4×4 drivetrain.
What is the gear ratio for the Ram rear end?
Ram has a standard axle ratio of 3.21 on 2X4 trucks and 3.55 on 4X4 trucks and trucks with the diesel engine. However buyers can choose different axle ratios for their Ram 1500, including a 3.92 axle ratio.
How to know RAM axle ratio?
Method 1: Count the number of teeth on the ring gear and the pinion. Divide the number of the ring gear's teeth by the number of the pinion's teeth. This will give you the axle ratio.
Which is better 3.73 or 4.10 axle ratio?
Performance Relative to Use
That 3.73 vs. a 4.10 has a huge impact on engine rpm because you are selecting second gear with a 3.73 to pull the grade, but you can hit third gear with a 4.10. Your engine speed is about 1,000 rpm lower, so temperatures under hood are going to be significantly lower.
What is the best axle ratio for towing a Ram 2500?
FACT: A 4.10 axle ratio is ideal for towing heavy loads in a mix of city and highway driving and when towing on varied or steep grades. A 4.10 axle ratio will provide improved acceleration in stop and go city traffic.
What is a 3.73 axle ratio good for?
A numerically higher axle ratio provides a mechanical advantage to send more of the engine's available torque to the rear tires (and front tires, in a four-wheel drive vehicle), but you pay the price at the fuel pump. So, a truck with optional 3.73 gears will tow a heavier trailer than one with 3.55 or 3.21.
