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Old 07-20-2009, 05:50 PM   #1
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Should these tires be replaced?

Attached are some pictures of my old Michelin tires. The tread seems very good. The outer sidewall is pretty cracked up from the sun but the inner sidewall is ok. Should I replace them? I already got a set of new Titan's (Dico) tires waiting to be installed. Thoughts?
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Old 07-20-2009, 05:57 PM   #2
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With the cracks...yes, replace them. A blowout can do lots of damage - there have been a number of folks here who have posted the "after" photos as proof.
There is a DOT code on the sidewall that gives a tire's age. Depending on which tire store you talk to, they should be replaced every 5 or 6 years.
There are threads here explaining the code.
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Old 07-20-2009, 06:09 PM   #3
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Quote:
Originally Posted by Fyrzowt View Post
With the cracks...yes, replace them. A blowout can do lots of damage - there have been a number of folks here who have posted the "after" photos as proof.
There is a DOT code on the sidewall that gives a tire's age. Depending on which tire store you talk to, they should be replaced every 5 or 6 years.
There are threads here explaining the code.
Dave
Ditto
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Old 07-20-2009, 06:10 PM   #4
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Here is a link to a discussion on it. There are many more.

http://www.airforums.com/forums/f160...hem-43639.html
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Old 07-20-2009, 06:17 PM   #5
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Man, I wouldn't even put tires like that on my utility trailer. You are just asking for a blow out.. If you have the new tires GET THEM ON....

Just my opinion...
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Old 07-20-2009, 06:44 PM   #6
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Cracks are the warning sign the tires give you to let you know they are done. You don't even need a fork!

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Old 07-20-2009, 06:53 PM   #7
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I absolutely would not fool with old tires after my experience last winter.

I used to check my tires regularly and as long as they had tread and no sidewall cracks, I figured I was good to go.

Well, two winters back on a SOB trailer, I felt a bad vibration coming from teh trailer. When I stopped to look, one tire had lost a full width section of tread at least a foot long, and thee tread was just starting to separate on two other tires.


I figure I was extremely lucky not to have experienced serious damage to the trailer - or worse.


The lesson I took from this is that you cannot judge when a tire is about to start delaminating just by a visual inspection. I now plan to renew tires after they reach 7 years age - and maybe sooner, I am still researching!

The penny-pinching side of me still balks at this, but then there is the old adage
"Penny wise, Pound foolish!" (I guess you have to er a Brit!)


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Old 07-20-2009, 07:16 PM   #8
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Tires

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First, yes replace the tires, there done.
Second, exactly what type of Michelins are those tires.
If they are Michelin XCAs, they havent been made in 15 inch in over a decade as far as I can find out.
It is my personal opinion that you will not find a tire in 15 inch of the quality or durability as that Michelin. This opinion was arrived after much research and many conversations with tire experts, engineers and NHTSA engineers.
To get an equalivalent replacment you will have to go to a 16 inch wheel and a LT tire. This is necessary to get the speed rating that makes a reliable tire nowadays.
All ST tires except the Cooper Custom Trailer Plus carry a 65 MPH speed rating. The Cooper's Speedrating is 99 MPH (reserve chute concept). But ALL my tire problems have disapeared since going to the LT tires.
Don't fall into the trap of going to a higher weight rated tire thinking that will do the trick. An E rated ST tire is still a 65 MPH tire.
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Old 07-20-2009, 07:47 PM   #9
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Thanks everyone. 2 new tires on the wheels. 2 more to go.
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Old 07-20-2009, 08:00 PM   #10
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What is the recommended torque rating for the wheels?
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Old 07-20-2009, 09:12 PM   #11
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My 75 service manual states that 90-95 foot pounds is correct for steel and aluminum wheels.
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