How To Find Axle Ratio Ram 1500

How to Find Your Ram 1500 Axle Ratio: A Comprehensive Guide

Knowing your Ram 1500's axle ratio is crucial for various reasons, from determining fuel economy and towing capacity to selecting the right tires and gears. This guide will walk you through several methods to find this vital piece of information, ensuring you have the correct data for your specific truck.

Method 1: Checking the Driver's Side Door Jamb

The easiest way to locate your Ram 1500's axle ratio is often right at your fingertips.

• Open the driver's side door. The sticker affixed to the doorjamb usually contains a wealth of information about your vehicle.
• Look for the "axle ratio" or a similar designation. This sticker typically lists specifications such as tire size, VIN number, and importantly, the axle ratio. It might be expressed as a numerical fraction (e.g., 3.21, 3.55, 3.92, 4.10).

Important Note: Not all Ram 1500 models include this information on the door jamb sticker. If it's missing, don't fret; there are other methods to try.

Method 2: Checking the Build Sheet or Window Sticker

If your door jamb sticker is unhelpful, you can try to locate the original build sheet or window sticker from when you purchased the truck.

• Search your vehicle's paperwork. This documentation should contain comprehensive specifications, including the axle ratio.
• Contact the dealership. If you can't locate your documents, contact the dealership where you bought the truck. They might have records of your vehicle's build information.

This method is most effective if you're dealing with a relatively new vehicle or have meticulously kept your paperwork.

Method 3: Examining the Differential Tag

Your Ram 1500's differential contains a tag that usually displays the axle ratio. This requires a little more effort, as it involves getting under the vehicle.

• Safety First: Always prioritize safety when working under your vehicle. Use jack stands, and ensure the truck is securely supported. Never work under a vehicle supported only by a jack.
• Locate the differential. The differential is typically located on the rear axle.
• Look for a tag. This tag might be riveted or bolted to the differential housing. The axle ratio is usually clearly displayed on this tag.

Caution: This method requires some mechanical aptitude and the appropriate tools. If you are not comfortable working under your vehicle, it's best to seek professional assistance.

Method 4: Using the Vehicle Identification Number (VIN)

Your VIN contains encoded information about your Ram 1500. You can use this to potentially decipher the axle ratio.

• Locate your VIN. This is usually found on the dashboard, driver's side door jamb, and other locations.
• Use a VIN decoder. Several online services and tools can decode your VIN to provide detailed vehicle specifications, potentially including the axle ratio. While this is possible, the accuracy may vary.

Understanding Your Axle Ratio

Once you've found your axle ratio, it's helpful to understand what it means. A lower number (e.g., 3.21) signifies higher gearing, leading to better fuel economy and higher top speeds. A higher number (e.g., 4.10) indicates lower gearing, better acceleration and towing capabilities, but potentially lower fuel economy.

This guide should help you successfully locate your Ram 1500's axle ratio. Remember to prioritize safety, and if you're uncertain about any step, consult a qualified mechanic. Knowing your axle ratio is a key piece of information for maintaining and optimizing your truck's performance.