I was pointed to this website, by a fellow rv'er on rvnet.

I kinda have a dilema, that I would like some advice on, if you can help.

I own a 2001 F250sd Extended cab, longbed, with V10 engine, 4x2. I carry a heavy Truck Camper. I have modified the rear suspension with the addition of 5000 pound air bags, and rancho 9000 shocks all around.

2 years ago I upgraded the tires and wheels to 19.5, for greater load carrying capacity. In 5000 miles I have not had a problem. This is all background info to help you understand my dilema.

MY Dilema:

In a truck camper chat room, the other nite, the question came up about my Michelin XZE 225/70r/19.5 14 ply tires, which are mounted on Vision 81, aluminum rims, that 7.5" inches wide.

The concern was that the Michelin web site does not list a 7.5" rim as an approved rim for mounting this tire on.

Like I said I have run them for 2 years (5k miles), never over 70mph. With camper on truck, I keep the rears at 100 to 110lbs, and the fronts at 80 to 85pounds.

I talked to the tire dealer I got them from, and he said not to worry, the tire will stay on the rim. He cautioned not to let the pressure drop below 55lbs,because the bead seal could let go. I asked him if I had a blowout, might the tire come off, and his answer was yes, and even if it was on the correct rim size it could come off during a blowout.

There is a very prominent website based tire and wheel dealer who joined the chat and said, I should not run this setup, and should get the correct rim size.
The person was not rrying to get me to buy new rims.

So now I have tire/rim dealers with conflicting recommendations.

As a consumer, I am a little concerned from a saftey standpoint.

I would appreciate any help you can provide concerning my situation.

In advance, thanks.

what are the approved rim widths for said tire??

I am running the same rim, with a different tire, and truthfully, I feel more comfortable with this setup and the narrow vision 81 rim than the load range E rims/tire setup.

So, Michelin recommends an even narrower rim - a 6.0/6.75" wide rim.

And the vision 81 is a 7.5" width rim.

I'd say forget about it, and just drive. Just MHMO.

And as I understand it, there is no option for width on the Vision 81.. What you've got, is what they offer. If you want a narrower rim, you HAVE to deal with Rickson.

Do you know if the Vision 81 7.5" rim, is a beaded rim?

The vision rim should have a inner safety bead. I didn't get a chance to look at mine before the tires was mounted.

If you loose the tire, I suspect it will be on the outside rim; the inner will hold it. The chances of totally loosing the tire are slim. You are only 3/4" wider than the Michelin specifications. My 19.5" with the Toyos 245's are awesome. I've done the 75 MPH, with camper and trailer loaded up, and they barely start to get warm. I also have a 2001 Ford F250 PSD, 4x4, and carry a Lance 550/9'10" camper and air bags.

If anything, I do not think any rim will survive a tire shredding incident when I have the truck fully loaded. I surely do not expect mine my rims. All I want my rim to do in that case is not fall apart.

Thanks, for the reply. As I understand it, the 245 is ok for a 7.5 rim.

My question for you is, if you know that a 225 19.5 should not go on a 7.5 rim, and you were buying new tires and rims for your truck, would you still by the tires and put them on the 7.5 rim? I am interested in your answer.

The vision rim should have a inner safety bead. I didn't get a chance to look at mine before the tires was mounted.

If you loose the tire, I suspect it will be on the outside rim; the inner will hold it. The chances of totally loosing the tire are slim. You are only 3/4" wider than the Michelin specifications. My 19.5" with the Toyos 245's are awesome. I've done the 75 MPH, with camper and trailer loaded up, and they barely start to get warm. I also have a 2001 Ford F250 PSD, 4x4, and carry a Lance 550/9'10" camper and air bags.

If anything, I do not think any rim will survive a tire shredding incident when I have the truck fully loaded. I surely do not expect mine my rims. All I want my rim to do in that case is not fall apart.
Thanks, for the reply. As I understand it, the 245 is ok for a 7.5 rim.

My question for you is, if you know that a 225 19.5 should not go on a 7.5 rim, and you were buying new tires and rims for your truck, would you still by the tires and put them on the 7.5 rim? I am interested in your answer.

Yes, I would still put them and run them.

I do not feel 3/4" is something to worry about; if the difference was larger, I would start to be concerned.