Expected Wear Mileage Michelin Tires

[britcon]

Just wondering what kind of wear mileage you guys are getting out of your Michelin Tires ?
I have the XRV 305 x 22.5 on my Ventana DP with about 36000 miles currently. They seem to be standing up pretty well, although steer axle tires a showing more wear.
I know there are all sorts of factors affecting wear, but assuming proper inflation, alignment, and lack of physical damage, what can I expect.

[FIRE UP]

Well Sir,
While I "assume" there's plenty out there, I only know of only one individual who's actually WORN a set of RV tires out. He did it in right at 80K miles. He's constantly on the move and puts a ton of mileage on his rig and tires. But, everyone else that I've personally known and still know who's been involved with RVs or decades, no other person has ever worn a set out. Hence, the need for "time" replacement over mileage.

Now, this really doesn't answer your question. Most RVers, are fairly conscious of the reasons to keep proper alignment, tire pressure and all that so they get as good of mileage as they can get in both MILEAGE for tires and, MILEAGE for gas mileage. We purchased our present coach, an '04 Itasca Horizon 36GD with the C-7 330HP CAT, with 40K on the clock, about 5.5 years ago. The tires that are on it were purchased about 10 months before we purchased the coach. So, at present, they're approaching the infamous "7 Year" mark at which the norm consensus is to start looking of replacements.

I have heard but, not read yet, that Michelin Tires recommends 10 years instead of the norm 7. So, with all that being said, and having read a zillion threads on tires, tire pressure, tire loading, odd wear patterns (never have figured out what "Rivering" is) and more, I've not read almost any where Michelin tires have worn prematurely or, improperly. Ours are looking like they could go another 70K easily. But, that's not going to happen.
Scott

[Mr_D]

Direct from Michelin and TOYO:

Michelin Technical Bulletin

Service Life for RV/Motorhome Tires

The following recommendation applies to RV/Motorhome tires. Tires are composed of various types of material and rubber compounds, having performance properties essential to the proper functioning of the tire itself. These component properties evolve over time. For each tire, this evolution depends upon many factors such as weather, storage conditions, and conditions of use (load, speed, inflation pressure, maintenance, etc.) to which the tire is subjected throughout its life. This service-related evolution varies widely so that accurately predicting the serviceable life of any specific tire in advance is not possible.
That is why, in addition to regular inspections and inflation pressure maintenance by consumers, it is recommended to have RV/Motorhome tires, including spare tires, inspected regularly by a qualified tire specialist, such as a tire dealer, who will assess the tire’s suitability for continued service. Tires that have been in use for 5 years or more should continue to be inspected by a specialist at least annually.
Consumers are strongly encouraged to be aware not only of their tires’ visual condition and inflation pressure, but also of any change in dynamic performance such as increased air loss, noise or vibration, which could be an indication that the tires need to be removed from service to prevent tire failure.
It is impossible to predict when tires should be replaced based on their calendar age alone. However, the older a tire the greater the chance that it will need to be replaced due to the service-related evolution or other conditions found upon inspection or detected during use.
While most tires will need replacement before they achieve 10 years, it is recommended that any tires in service 10 years or more from the date of manufacture, including spare tires, be replaced with new tires as a simple precaution even if such tires appear serviceable and even if they have not reached the legal wear limit.
For tires that were on an original equipment vehicle (i.e., acquired by the consumer on a new vehicle), follow the vehicle manufacturer’s tire replacement recommendations, when specified (but not to exceed 10 years).

The date when a tire was manufactured is located on the sidewall of each tire. Consumers should locate the Department of Transportation or DOT code on the tire that begins with DOT and ends with the week and year of manufacture. For example, a DOT code ending with “0304” indicates a tire made in the 3rd week (Jan) of 2004.

Toyo RV Safety

Tire Damage and Aging (Non-Commercial Use)
Vehicle operating conditions and tire maintenance practices vary widely. Tires should be routinely checked for damage or signs of fatigue or aging. This should be done at scheduled vehicle maintenance intervals and preferably on a lift so that the tires can be thoroughly inspected by a tire professional.
Tire longevity is extremely dependent on factors such as air pressure maintenance. It is recommended that tires be thoroughly examined by a tire professional after reaching five years of service. Even tires with serviceable tread remaining may require replacement prior to wearing out. Tires which have reached a remaining tread depth of 4/32nd should be replaced.
The age of your tire can be determined by reading the sidewall. Every tire has a 10 or 11 digit DOT (Department of Transportation) identifying number on one sidewall.
The last 3 or 4 digits are the most important to you. Older tires have 3 digits, the first two identifying the week of manufacture and the third digit the year when the tire was made. Tires made between 1990 and 1999 may have a triangle alongside the numbers. As from January 2000 4 digits are used, the first two give the week of manufacture and the last two digits tell the year the tire was made.

[toddb]

Replaced a set of Michelin that had 72K miles on them. 6 1/2 years old, about 1/8" tread depth left all around. Age, mileage, and sidewall cracks helped me decide to replace last fall rather than wait for this spring. OEM tires were Michelin 275/80 R22.5, I opted for Toyo M154 in 295/75 R22.5.

[Ramzfan]

As I have stated on other forums here, I have run a set of OEM Michelins for 15 years without a blowout. I would not recommend that others try it though. The tires were kept out of the sunlight and driven minimal miles. I would say that if you took real good care of a set, you could probably safely go about 10 years. Everybody is different though.