Class A tires

"One tire took 1 ounce and the other 0 to balance them on road force balancer."

DOWN HOME, I'll try not to take to long to explain take on balancing.
I use only Michelins and haven't had one balanced in many years. IMHO, if you have a tire balanced immediately after it's mounted, in many cases you are balancing to a "false" situation, i.e., tire bead has not seated permanently to rim, tire has shipping distortions (pass.), or other situations. If you balance immediately, they can be out of balance within a few hundred miles when all distortion has been worked out and beads are permanently seated.
For years my procedure has been to ask service person to make sure the wheels are clean, use good, fresh mounting lubricant, mount and inflate to max. PSI shown on sidewall of tire. Then I drive them few hundred miles, lower to normal operating pressure and forget about them.

It's my opinion if a Michelin requires weight after this procedure, it normally means the WHEEL, not the tire, is out of balance. That is not the case very often, but I have seen it.

"In the tire industry 40 years; seen it all and done most of it"

Replaced our rear G670s at 10 years of age. Looked, smelled, and felt new inside and out. Very little to no wear with 36,000 miles. Felt like an idiot.Heavier coaches with wrong air pressures left with mud and dirt on the tires, sitting in strong sun for long times will bleed oils out as will parking on lime or uncoated concrete. Ours is stored inside and we only get occasional use now.
Michelin salesman said ten years life, Store Mgr pulled him aside and said they don't know how long. Goodyear with lots of UV protection additive 10 years under good conditions.
Front G6os rivered and Goodyear would not make them up and under five years old at the time. Blamed it on the coach, a weight, b alignment, suspension, then "they ll do that."
Michelins we have on are all steer axle tires with decoupling grooves.
Only thing that worries me is they have "orange oil" in them demanded by enviros. How long will they last? One tire took 1 ounce and the other 0 to balance them on road force balancer. They ridge great...but how long.

I retired in 2000 after 40 years working directly for a major tire manufacturer. When I started in 1961 very, very few in the US knew
what a radial tire was.

In those 40 years I have worked in almost every facet of tires, especially truck & large earthmover tires. I know the radial from the inside out, top to bottom.

In my honest opinion, age of the tire is getting a very bad rap now-a-days. No matter what happens to a 5-6 year old tire "should have changed it sooner" is the standard remark. People have been brain-washed by the tire marketers, not by manufacturers. If you are investing in a good set of radials, and I mean from a major manufacturer, some well-spent time would be reading about tires on their website. Haven't seen one yet that says replace at 5-6 years.

Going on my personal usage of radials for almost 48 years, I can tell you if the tire is properly sized, kept inflated properly (not under NOR OVER) inflated, and generally maintained to a good, high standard, in a vast majority of cases it will run 10 years or more. I do believe for RV usage 10 years is enough, no matter how good they look. (A trucker will buy them and run them another 10 years........)

A side note: We used to inquire when a person brought in a ruined tire he/she said "I was just driving 55 mph and it blew out." Our question: Think hard now, do you remember hitting something on the road within the last few hundred miles? If you did you probably held your breath, thinking you damaged a tire but it kept running. Actually, you did ruin that tire a few hundred miles ago, but it kept running and finally blew out.
(Believe it or not, some were honest enough to know what we were talking about and admitted they had hit an object in the road)

Just my 2 cents worth on tires !

"In the tire industry 40 years; seen it all and done most of it"

OP here. Just to confirm - I do check cold tire pressure before each trip. I keep a compressor onboard just for this reason.

So far my longest trip in the MH was about 125 miles each way. Also as for weight, Because my trips are local I have never had to load up my MH. My fresh water tank is never more than 1/2 full. My grey and black tanks are empty before each trip. My basement storage has does not have all that much in it. We have never had to pack for more than a week so we dont carry much in the way of food or clothing. So I guess we tend to be underweight.

Well, if you add that you check the tire pressure (for the load you carry) every time before you roll down the road, I would say you should easily get 10 years out of your tires. Oh, let me qualify that to also include that you know they've been properly checked since they were installed on the motorhome. I never covered our tires, just didn't see the need seeing as the rig is usually here in the NorthEast.

Our rig came with the Michelin XRV's and I got 12 years out of them, about 30K miles, give or take. I replaced them because we had two long trips coming up, one through the summer heat, so I decided it was best to change them out. I went to the Toyo's. No complaints. Despite all of the stories I read about the XRV's, ours served us well. I might've even pushed them another year or two if we were sticking to local trips.

On my Michelin's, I checked tire pressure every morning before travelling and hit the tires with an IR temperature scanner at rest stops. So I knew they were always treated right, and I never ran over curbs or road hazards of any serious nature. KNOWING those types of things gave me confidence to push things a little past the 10 year point.

With the Toyo's, I took the savings between them and Michelin's and bought a TPMS system for the moho and the dinghy. Again, money well spent, in my opinion. Now with a push of a button, I know all of the tire pressures are good and ready to go.

~Rick

If you install new tires and do nothing but drive on them with proper inflation, they should last 10 years. If you apply protectant and cover your tires any time they are not turning, and do everything else you can to preserve them, they should last about 10 years.

Hmmmmm.............

You said they are 22.5's.. Mitchlin XRV's are about 2700 dollars (WITH FMCA DISCOUNT) plus mounting and balancing.

Toyo about 2250 to 2400 Mounted and balanced at/by Belle Tire in Michigan. Mine have now been on for about 30 HOURS.. (That's yesterday's price).

The Toyos are not Exactly the same size. (Less than 1% difference in total outside diameter/circumference) but Well.. Same weight rating and fit perfectly.

My RV is 13 years old but I put a set of used XRV's on it last year when I blew one. then I blew one of those. I do not expect these to go BOOM any time soon.

Nice to have new shoes.

OP: We used the same care techniques as you do and we replaced them at 7 yr. We just didn't have a good feeling about going by looks.

Currently, we have 46,000 miles on our tires that date from late 2013 and to early 2014. I will replace the tires at the end of next year as they will be almost 6 yrs. old. My estimate is that we'll have about 52K-55K on the coach at that time.

We are heavy at 55,500 lbs. and I don't want to run the risk of a blowout, just not worth it to me.

I have my coach in for service now and the guy is going to look at my tires up on a lift to see if there are any obvious exterior issues. He will also check all suspension components, hoses and belts, etc. :)

Safe travels,
MM.

Curious on your RF blowout - how did it handle? Did it stay on the road? Did you remember to accelerate like Michelin says, or just brake? Do you have any aftermarket safety gear (i.e. safe-t-plus, tyrone rings, etc.)