After I published information on what the “MAX” stamped on tires means on a number of RV forums, I had a few folks thank me for the clarification. Some followed up by asking where to find the Inflation Tables. This request surprised me as I thought that most people knew that they can check my RVTireSafety(dot)net blog or simply search on Google for almost any topic if they had a question—but apparently I was wrong.
So, here is a collection of links to the various tire inflation tables published by different tire companies. Since not all tire companies make all sizes, you may need to check the table for a different tire company if you can’t find the info for your particular tire.
Almost all tire companies follow similar load formula calculations in the USA, Europe and Asia. BUT minor differences occasionally occur due to doing calculations in inches and pounds versus millimeters and kilograms as there is rounding that takes place. Also, some sizes have been around for decades, so their load capacities may not match the formulas exactly. However, they are acceptably close. This is why it is best to use the tables published by the company that makes your brand of tire.
Sometimes it is easy because you use one of the big name companies such as Goodyear or Michelin, while other times you may find you have tires that are not actually made by the company with the name on the sidewall but are, in fact, just imports made in common molds with changeable nameplates.
If you find an error or omission in this list, please drop me an email with the link that needs correcting, or a new link, and I will update this post. That way you can bookmark this page and save it for future use.
To the best of my knowledge, both Goodyear and Bridgestone/Firestone follow The Tire and Rim Association (TRA) (U.S.) published tables. So you can simply look at its tables for the numbers if you can’t find your tires in any of the links below.
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Bridgestone\Firestone
(PDF) Links to Load Inflation charts, How to Weigh your RV worksheet and related material. Note Bridgestone “Medium and Light Truck Data Book includes Load inflation tables for 16” and larger tires for both Bridgestone and Firestone brand tires.
Carlisle
Has product info and size list, but no Load Inflation tables. However, since they only have ST-type tires, which I suggest always be run at the inflation pressure molded on the tire, you can use the max load info to confirm you are running under the tire max by at least 15% for longer tire life while still maintaining the tire max inflation. They do have three larger size ST-type tires found HERE.
Continental
Data book for commercial tires.
Cooper
Does not publish Load & Inflation tables. I suggest you use Bridgestone or Goodyear tables.
Double Coin truck tire
Load & inflation for 19.5″ and larger.
General truck tires
Load Inflation tables
Goodyear
RV tire information including link to Load & Inflation tables.
Hankook
(PDF) Medium-duty truck tire info. The link will download their catalog with Load & Inflation info.
Hercules
Does not publish Load & Inflation tables. I suggest you use Bridgestone or Goodyear tables. BUT their high load ST tire info can be found HERE.
Kumho
Product info page and links to their technical information.
Note they show both P-metric and “Euro-metric” tires that do not have a P prefix, but based on the inflation these are basically passenger-type tires even though some are listed under “Light Truck”. Only their “Road Venture” has actual LT-type tires listed. They do have 19.5 and 22.5 size tires.
MAXXIS
LT tires
Tire data on LT tires but no Load Inflation tables. I suggest you use Bridgestone or Goodyear tables.
MAXXIS
Trailer tires
Tire data on ST tires but no Load Inflation tables. I suggest you use Goodyear tables.
MAXXIS
Trailer Load & Inflation tables.
Michelin
RV tire guide and links to Reference Materials and Load Inflation tables for 16″ to 24.5″ tires in RV application.
NOTE: Many of the Michelin tables are not based on single tire loads but axle loads, so you will need to divide the Michelin numbers by 2 for fronts and by 4 for dual position individual tire loading. This just adds a bit of confusion to your calculations. I also am aware that a few Michelin tires do not follow the U.S. TRA tables, so if you are using Michelin brand you really do need to use their tables. 16″ and other size Load Inflation tables can be found HERE.
Sailun
S637 17.5 size tire information Load & Inflation tables.
Here is info for their ST637T ST-type tire.
Sumitomo
You can download their booklet on Medium Truck size tires for 19.5 & 22.5 sizes
Load Inflation table on pg. 4.
Towmax
Does not publish tables, only the tire max load.
TOYO
RV tire care and Load & Inflation tables. Also a good overview of info on tires including passenger tires. Truck size (22.5) info can be found HERE.
Trailer King has tire spec sheets that show the max load and required inflation HERE.
Uniroyal LT
Size info. They say to use the Michelin Load & Inflation tables. “It’s important that you get all the safety-related materials that come with the purchase of new Uniroyal passenger and light truck tires. If you did not receive a warranty book, you can download one at www.uniroyaltires.com/care. If you did not register your tires, please take a moment to do so at www.uniroyaltires.com. Registering your tires is easy and takes just a minute.”
Yokohama
Info on their commercial tires on pg. 23 HERE. (PDF)
NOTE: If you can’t find your specific tire size load & inflation info from your manufacturer, you should call their Customer Service number. Also note that the Toyo technical guide has LOTS of useful information.
GENERAL INFORMATION
How to read a tire Load Inflation table
Barry’s Tire Tech
National Highway Traffic Safety Administration
Tire Safety
File a complaint about a tire failure with NHTSA.
Air pressure, temperature variation
Tire Rack
or go HERE
The Tire & Rim Association. Where to buy Industry Standards books
MasterCraft tire Education
Rubber Manufacturers Association
Links to Tire Safety information
RV Safety Education Foundation
RV education and tire weighing service
CAT Scales
Truck Scales
FifthWheelStreet
General information and weight calculations for trailer owners
Roger Marble
Check out my Blog www.RVTireSafety.Net
Read more from Roger Marble on RVtravel.com.
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Once again, excellent reliable data source.
Outstanding! Many thanks for compiling this!
Thank you, Roger! 🙂 Both RV #1 and RV #2 had Michelin tires as OEM. I have a couple of hard copies of their RV tire books in addition to an electronic copy or two. Thanks again, have a great week, safe travels, and safe stays! 🙂
One of the most popular trucks out there today is the Ford Super Duty which comes with Michelin Defender M/S 2 tires, which you can’t find on the Michelin website’s psi charts.
Fred, With over 40 different sizes of Defender M/S 2 line I can only guess which one you have. Michelin advises “The best air pressure recommendation for the original equipment size tires is to use the inflation pressure as specified by the vehicle manufacturer which can be found on the placard located on the driver’s door jamb or in the vehicle owner’s manual. They have determined the optimal inflation pressure for load, ride, handling, rolling resistance and treadwear performance” I also doubt that the infl tables for this tire are different than the table for other Michelin LT tires. If you provide the size and LR I can see what I can do.
Toyo link won’t work for me…