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Old 07-08-2014, 08:30 AM   #1
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Motor home Tires

What is recommended safe tire life?

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Old 07-08-2014, 08:44 AM   #2
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I go 10 years but that can be pushing it. Had an 8 y/o lose it's tread.

How relevant is TIRE AGE??

Don and Mary
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Old 07-08-2014, 08:53 AM   #3
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Various tire manufacturers recommend seven to ten years.

Michelin warrants their tires for weather checking for ten years (prorated).

Some have had issues much earlier, some have gone more than ten years. Keeping them covered, properly inflated, and regularly used, all helps prolong their life.
Chris & Sherry Brown - 2014 Anza Borrego Weekend Trip Report
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Old 07-08-2014, 10:14 AM   #4
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I agree with Chris above.
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Old 07-08-2014, 12:01 PM   #5
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Originally Posted by CJBROWN View Post
Michelin warrants their tires for weather checking for ten years (prorated).
Where have you seen this? This is what I just pulled off the Michelin site:

Tires which become unserviceable due to:
– Road hazard injury (e.g., a cut, snag, bruise, impact damage or puncture);
– Incorrect mounting of the tire, tire/wheel imbalance or improper repair;
– Misapplication, improper maintenance, racing, underinflation,
overinflation or other abuse;
– Uneven or rapid wear which is caused by mechanical irregularity in the
vehicle such as wheel misalignment, (a measured tread difference of
2/32nds of an inch or more across the tread on the same tire);
– Accident, fire, chemical corrosion, tire alteration or vandalism;
– Use in commercial applications for treadwear; by this warranty for 6
– Flat spotting caused by improper storage or brakelock;
– The addition of liquid, solid or gaseous materials other than air, nitrogen or
carbon dioxide (for example, waterbase sealers or balancing substances);
– Cosmetic ozone or weather cracking;
® Self-Supporting Zero Pressure (ZP) tires without a
properly operating low air pressure warning system.

Tires branded “Blemished” or “BLEM” are not adjustable for appearance
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Old 07-08-2014, 12:15 PM   #6
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Here you have Michelin's recommendation for RV tires:

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. (See back.)
The Great Dane
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Living in Denmark - visiting the US whenever possible. www.winnebago.dk www.blog.retired.dk

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Old 07-08-2014, 12:21 PM   #7
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Well I'll be. I did a quick search to find out if this was something from previous years but could not. I'll look in the paperwork I got with the coach and report back.

Obviously Michelin does not warrant for ozone or weather cracks. Some manufacturers do.

Here is a fairly current product information bulletin from Michelin on tires for RV's:

In any case, they do recommend replacement at ten years at least, and an annual visual inspection by an trained technician after 5 years. Quite a few hints on how to extend tire life as well, plus the load carrying per inflation pressure charts.

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2005 Itasca Sunrise 31W - W20 and 8.1
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