Tuesday, September 21, 2021
Tuesday, September 21, 2021

RV Tire Safety: My first-ever recommendation for a tire to buy

By Roger Marble
If you review my blog posts and posts on various RV forums, or have even attended one of my RV tire seminars, you know I have tried to avoid making specific tire recommendations. Well, this changes today.

If you use tires in a 225/75R16 dimension tire in ST or LT or Metric type, you might want to consider the Michelin Agilis® CrossClimate® C-Metric tire.

The reason I am making this recommendation is based on the load capacity of Michelin’s “C-Metric” tire.

Based on the data published by Michelin HERE, tire dimensions are the same. What is different is in the “Fine Print” of the stated Maximum load capacity for their C-Metric when inflated above 80 psi.

The LT Michelin has a stated Maximum Load Capacity Single of 2,680# and Max Dual load capacity of 2,470# per tire when inflated to 80 psi (LR-E). This max load applies to the Michelin LT225/75R16 XPS-Rib and the regular LT225/75R16 Agilis Cross-Climate. The same max load is stated for both Bridgestone, Continental, Goodyear, Toyo tires and others. (If you find another company making the use of the C-Metric load capacity please let me know.)

The Agilis C-Metric, however, has a maximum load capacity of 3,195# Single and 3,000# in Dual application when inflated to 83 psi.

The Agilis C-Metric provides additional load capacity

The “C-Metric” can give you an extra 515# load capacity in single or 530# per tire in dual position.

For a Class-C motorhome this works out to an additional load capacity of 3,150#.

Now, I would certainly hope that people not add another 3,000# of “stuff” into their RV. In my opinion, you would be better off using the Michelin Agilis to give you a nice increase in the “Reserve Load” capacity of your tires to get you closer to a suggested 20% figure.

For you folks with RV trailers, your current ST225/75R16 LR-E tires are giving you a total load capacity of 11,320# for 4-tire applications. Switching to the Agilis could increase your capacity to 12,780# or better. It would increase your reserve load from your current 10% to 24% if you simply resist the temptation to pack more “stuff.”

It appears that Michelin has made some construction changes in their C-Metric line to provide more or better reinforcing materials to support the extra level of inflation. That is where you get the extra load capacity over LT-type tires. That’s because it is the inflation that supports the load, not the tire itself.

I can only assume that other tire companies have chosen to make the marketing decision to not build similar “C-Metric” tires. This option is available to all tire companies as there is nothing magic involved here, just a marketing decision.

Have a tire question? Sign up for Roger Marble’s new Facebook Group: RV tire news, information and discussion, hosted by RVtravel.com and moderated by Roger. He’ll be happy to help you.

Read more from Roger Marble on his blog at RVtiresafety.net or on RVtravel.com.

 ##RVT1015

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Joe
23 days ago

The “c” is made by almost all manufacturers. It is required for all the new sprinter type vans that are on the market. It stands for cargo. Just remember, just because the tire rated at a higher load capacity, that doesn’t make it a better tire. The most important factor to any tire is air pressure.

William M
23 days ago

Roger, I switched to Pathfinder HSR 225/75/16C on my class c. They are made by Hankook for Discount Tires. We are on an extended trip through the Rockies and so far I am satisfied with the ride and performance.

Roger V
24 days ago

.

Last edited 23 days ago by Roger V
Drew
23 days ago
Reply to  Roger V

He mentioned that the additional capacity could prevent accidental overloading and provide a safety cushion. He also stated that he hoped people wouldn’t arbitrarily overload their rv’s just because of the additional tire capacity.

Donald N Wright
24 days ago

Thank you. I guess I will soon stop seeing big RV’s on the side of the road. Do they have tire sizes for small campers like popups, aframes, teardrops, smaller single axle trailers ? Manufacturers usually put the cheapest tires on them.

SGT
23 days ago

I have the same question. Thank you Roger for having the courage to name names.

tom
24 days ago

Thanks.

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