Use the calculator below to determine the optimal tire pressure for your vehicle, tailored to load and tire specifications, and in various terrains. Maintaining proper tire pressure is vital for safety, performance, and tire longevity. Whether you're driving an overland vehicle, an expedition rig, a dedicated trail machine, a lightly modified daily driver, a toy hauler, or recently upgraded to larger tires. This tool will help ensure you're set up for success on and off the road.
Steps to use the calculator:
Enter your front and rear axle load
Check the box if you have a dually(Great for Van Life Community!)
Enter the max load capacity of your tire
Enter the max pressure rating of your tire
Select the terrain you will be driving on
Notes on Axle Load and Tire Specifications:
There are two methods to approach Axle Load:
The first, and recommended method, is to use the GAWR (Gross Axle Weight Rating), typically located on the sticker in your driver’s door jamb. This is the maximum load your axles can safely handle as determined by the OEM.
The second option is for heavily modified vehicles or custom applications where you want a precise measurement for your exact setup (e.g., 1-ton axles and 40's on a Jeep). For this method, you will need to go to a certified scale that can weigh the vehicle and show front and rear axle weights separately. Commonly used is a CAT scale, found all over the U.S., typically used to weigh semis.
Note: The second method has zero overhead built in. Make sure you are obtaining the weight of the vehicle at FULL load. For example, an overland rig that is fully loaded; as if you were on a large expedition. This would be ideal for a full-time overland or trail rig that does not see any weight fluctuations.
There are two ways to obtain Tire load rating and pressure:
Reference the sidewall of the tire for tire load index and maximum pressure. Load index may need to be converted to lbs if not listed on the tire. See "Load Index & Capacity Chart" below.
Reference your tire manufacturer's website for specifications on your specific size and load rating. Typically this is listed directly, or linked to, on their website when browsing for your tire.
Note: Most manufacturers will have a different weight rating for single vs dually applications. It is important to enter the correct number below. If only one weight rating is provided use that number
