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Open Roads Forum  >  Class A Motorhomes  >  Maintenance Issues & Tips

 > Aging 22.5 tires - how old is too old?

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jpwiggo

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Posted: 08/30/13 07:22am Link  |  Quote  |  Print  |  Notify Moderator

I read an article created by:
Guy Walenga, director of engineering, tire products and technologies at Bridgestone Americas

In it he tells how tires "properly maintained, inflated, repaired and retreaded commercial truck tires may safely and reliably be in service for 10 years or more"

I am wondering if there is other data you may have. I know most 'sales' answers are going to be 6-7years then change. Not interested in what a company's sales answer is, more looking for what is the correct answer.

I have 7year old Goodyears on my DP and they look new, stored indoors and with less than 40K on them. Going to run them for a few more years.

Roadpilot

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Posted: 08/30/13 07:35am Link  |  Quote  |  Print  |  Notify Moderator

We had an engineer from Michelin in to talk to our group about tires. He said they should be good for 5 years and then from 5 to 10 years they should be inspected annually. He said the inspection can't be an external visual, the tire has to unmounted and examined from the inside.

I know two MH's that had front tire blow outs. Both totaled and one killed. The recommendation where we are is that when the front tires reach 3 years move them back. We had a tire fail on our tag and it did thousands of dollars of damage, but there were no control issues.

I also measure tire pressure every trip. I know the weight by axle of our MH and go by Michelin's chart on tire pressure.


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The Texan

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Posted: 08/30/13 07:36am Link  |  Quote  |  Print  |  Notify Moderator

The tire manufacturers say up to 10 years, with annual inspections after 5 years. However many folks on here think engineers and manufacturers are clueless and everyone is filthy rich like they must be, say the world will end if you drive one day past 5 years on them. Myself, I follow the manufacturers recommendation and just changed my 8½ year old drive tires last week.

The manufacturer designs them, builds them and sells them, so if they say 10 years, that is good enough for me.


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zb39

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Posted: 08/30/13 07:40am Link  |  Quote  |  Print  |  Notify Moderator

7 years, I went 3 months past that once and had a blow out. Never again. I only run Goodyear or Michelin. The Michelin blew.


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TucsonJim

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Posted: 08/30/13 07:53am Link  |  Quote  |  Print  |  Notify Moderator

If you have the time, and would like to do some detailed reading on this topic, the NHSTA has some excellent research on this topic. The link I'm providing below has dozens of articles on tire aging, safety, inflation and loading. It's really worth checking out and getting informed.

NHSTA Tire Safety Links


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sdianel -acct closed

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Posted: 08/30/13 09:54am Link  |  Quote  |  Print  |  Notify Moderator

We are not willing to risk going beyond 7 years. So many factors involved in how long tires will last that it's not worth it to us to gamble with something so important. Our tire guy said 7 years. That's what we're going to do.

Nomadac

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Posted: 08/30/13 09:59am Link  |  Quote  |  Print  |  Notify Moderator

Michelin Technical Bulletin
Service Life for RV/Motorhome Tires
The following recommendation applies to RV/Motorhome tires.
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).
I had a Michelin Rep. tell me, that to start having the tires checked annually by a qualified tire dealer beginning in the 6th year and replace when they reach 9 yrs. max. I followed this and the 8th year two tires had very fine cracks developing around the beads so I replaced them, rather than take a chance that one would blow and cause more damage than the price of the tires.


Arnie
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steveownby

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Posted: 08/30/13 10:15am Link  |  Quote  |  Print  |  Notify Moderator

jpwiggo wrote:

I read an article created by:
Guy Walenga, director of engineering, tire products and technologies at Bridgestone Americas

In it he tells how tires "properly maintained, inflated, repaired and retreaded commercial truck tires may safely and reliably be in service for 10 years or more"

I am wondering if there is other data you may have. I know most 'sales' answers are going to be 6-7years then change. Not interested in what a company's sales answer is, more looking for what is the correct answer.

I have 7year old Goodyears on my DP and they look new, stored indoors and with less than 40K on them. Going to run them for a few more years.


There is no definitive answer to your question. Tire manufacturers can give you a tire life expectancy under perfect conditions but not in the real world. How many times have you hit a really serious pothole or scuffed a curb. How many times was a tire under inflated or carrying a little to much weight for the inflation.

We may think we are great about tire issues but on any given day a situation can arise that might impact tire life. The perfect time to replace a tire is just before it fails. Unfortunately that's not a viable replacement schedule.


Steve Ownby
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Dick_B

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Posted: 08/30/13 11:52am Link  |  Quote  |  Print  |  Notify Moderator

In three years let us know how they made out. Take one off and have it inspected by a qualified tire shop inside and outside.


Dick_B
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timmac

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Posted: 08/30/13 12:06pm Link  |  Quote  |  Print  |  Notify Moderator

6 years..

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