Saturday, October 1, 2022


Your tires have information molded on the sidewall about Load and Inflation capacity. Do you know what those numbers mean?

Our RV tire expert, Roger Marble (read his articles here), wants to know if you know what all that information on your RV’s tire sidewall means. There’s information molded on the sidewall about load and inflation capacities, but what does it mean?

In today’s poll, please click the option that you think is true. Don’t worry if you’re wrong, that’s why we’re here! Plus, you’ll probably see something from Roger about this soon, so we’ll all learn together!

Thanks for voting!


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Roy Davis
6 months ago

I spent over 30 years in tire manufacturing and I not only know what these numbers mean, I know what goes into determining those numbers.

Last edited 6 months ago by Roy Davis
Sailor Bill
6 months ago

Poorly worded question and responses. The information molded on the sidewall can not change and can’t “be different” than what it actually is. Tires should be inflated based on the actual load on the highest loaded tire on each axle. However, that is not what the poll asked.

Duane R
6 months ago
Reply to  Sailor Bill

Absolutely right, on all counts.

7 months ago

It looks like everybody needs to ask Roger Marble again.

7 months ago

The sidewall info means: Don’t underinflate, overinflate, overload or drive too fast! Right?

Irvin Kanode
7 months ago

The problem is that the important sidewall info is often printed in tiny type that’s hard to read. Even when using a flashlight, wetting the sidewall, etc. But the brand name and other less important info is large and easy to read!

Ron T.
7 months ago

It was a yes or no question so why the multiple choice answers? I sold, mounted and balanced thousands of tires in my younger days before they even put these numbers on the sidewall. Tires are much more complex today but now you can start with the numbers on the drivers door jamb and go from there based on actual weight per tire and and ride comfort.

7 months ago
Reply to  Ron T.

…until you upgrade tire load range! Mine went from “D” to “F” (No “E” available); so the plate for pressure no longer applies.

7 months ago

Various tires may be different, but in most cases everyone should realize what MAX means.

Equally important is knowing what the speed rating & load rating numbers mean.

Mike Albert
7 months ago

So, the correct answer is???????????

7 months ago
Reply to  Mike Albert


Haha, just kidding, as in most multi guess quizzes there is often more than one correct answer. In this case the, the best answer is pretty obvious and 65% got it right.

7 months ago

I was kind of surprised they didn’t offer the actual definition wording since that was the question.

7 months ago

That’s it? Just a poll? A quiz without any words about an answer. Seems like most of the article fell off on its trip through the internet.

Wayne C
7 months ago
Reply to  Dan

Go to Roger Marbles website and you can get all the information you need. You will also discover the reasoning behind the answer 65% got correct. I think Roger must be a little frustrated the percentage isn’t higher.

7 months ago

Used to have an individual who insisted that the molded tire pressure number was the recommended tire pressure when starting out your trip. People who followed his advice always complained about the hard ride.

Bob Palin
6 months ago
Reply to  tom

given the weight of most people’s trailers it probably is the right pressure…

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