TIRE LOAD INDEX CHART
A TIRE’S LOAD INDEX
WHAT EXACTLY IS TIRE LOAD INDEX?
When the super smart engineers designed and built your truck, they crunched some numbers and determined exactly how much weight it could carry safely based on the right tire size and pressure. This is what is called the “tire load index.” The tires that come on your vehicle will have the proper load index, so stick to that number or higher when you purchase new tires. You can also check the vehicle’s manual to find the recommended tire size and load rating.
WHY IS TIRE LOAD INDEX IMPORTANT?
The tire load index tells you how much weight your tire can carry, and overloading your tires is never a good idea! When you put too much weight on your tires, you can cause damage and wear them down prematurely. Even worse, you run the risk of experiencing a tire blowout. Imagine trying to carry a box full of cement blocks. Just like your legs would buckle under the weight, your tires can completely give out if they’re overloaded.
USING THE TIRE LOAD INDEX CHART
The tire load index lets you know the load carrying capacity of a tire. In other words, it’s the amount of weight your tire can support safely.
For example, if a tire has a load index of 120, it can support 3,086 pounds at maximum air pressure. Multiply that by four (SRW) or six (DRW) tires SRW example here (4 x 3,086 = 12,344 pounds) to get your truck’s maximum load carrying capacity. To Determine PAYLOAD of your tires (the weak link) do the math above and subtract the weight of your truck with you, the wife, dog, kids and full of fuel, from your total tire number, this will equal your “tire payload capacity”. Never install tires with a lower load carrying capacity than the original tires that were factory installed on your vehicle.
TIRE LOAD INDEX CHART
|Load- Carrying Capacity Index Ratings|
|Load Index||Load (lbs)||Load Index||Load (lbs)||Load Index||Load (lbs)|
CONSIDERING LOAD INDEX WHEN TIRE SHOPPING
As you can tell, the tire load index is massively important when you’re shopping for new tires. When it’s time to select new or upgrade your current tires for your vehicle, you must select tires that can support your truck’s Gross Vehicle Weight Rating (GVWR). This number can be found in the owner’s manual. To determine if a set of tires will work on your particular truck, use the tire load index chart to see how many pounds each tire can support. Multiply that by four or six (SRW or DRW) times the number of tires your vehicle uses. As long as that number is greater than the GVWR of your vehicle, those tires should work. You can see here another example of how tire rating/capacity is key to how much weight you can carry on your truck.