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Re: [GMCnet] I have a new job! Also, Heavy/medium truck tire age limits? (OT) [message #247534 is a reply to message #247507] Tue, 15 April 2014 20:27 Go to previous messageGo to previous message
Byron Songer is currently offline  Byron Songer   United States
Messages: 1912
Registered: August 2007
Location: Louisville, KY
Karma:
Senior Member
You've gotten some good advice here. Among the better was the advice to
check the Michelin website. Great information there regardless of the
brand.

Medium and heavy truck tires aren't designed for sustained driving at
speeds above 65. You wouldn't know that from some of the guys driving the
rigs. It's one way to live dangerously, especially in the summer. The main
reason for seeing tire carcasses on the highway comes from a combination
of speed, tire pressure, and ambient heat. With the wrong balance the
sidewall will give way.

Therefore, be sure to have the tire pressure set for the weight you'll be
hauling and keep the speed below 65. You'll save fuel and save money.

Date code on a medium or heavy truck tire is a date code. The status of
the tire is inside where you can't see it. However, if you examine the
side walls and see no great sign of cracking from exposure to the sun,
don't worry too much. 10 years isn't too long. The main reason is that you
have a lot more plies on those tires than a light truck or auto tire.

Load range is important. However, another gauge for the tire is the size
for the carrying capacity. The wheel size is standard but the dimension is
where the difference is.

The rule of thumb for checking the tire temperature when stopped after
driving a highway speed for an hour is to walk around and feel the tread
with the flat of your hand. If it feels hot, sit still for a while. If you
can keep your hand on the tire and it just feel real warm, you're OK. Now
you know why guys walk around at truck stops with a hammer for checking
pressure quickly and feeling with the hand. If one doesn't sound or feel
right in comparison to the others, that's the one you'll have a problem
with.

Rule of thumb in my book is this: Good pressure, good sidewall, good
temperature, and safe speed equals good service.

Byron Songer
Louisville, KY

ATTENTION: This reply is in reference to what is provided belowŠ

>One that that worries me is tires. I'm getting conflicting information
>about age of tires, that maybe the compounds used in the big truck tires
>aren't as prone to aging out after 7 years like passenger car and light
>truck tires (as are found on our RVs). Does anybody have any knowledge in
>that area? How old can the tires be on a Medium/heavy truck before they
>need replacing, regardless of miles? Commercial truck tires are apparently
>designed to be retreaded etc and last for hundreds of thousands of miles,
>but I don't know how aging affects them. Advice?
>
>--
> Robin Hood
>Jackson, MS
>2013 Subaru Outback "Top Flight"
>1968 Pontiac Catalina "The Cheshire Cat"
>1978 GMC Royale motorhome "Pinto Bean"
>1977 GMC Palm Beach motorhome "Barn Queen"
>_______________________________________________
>GMCnet mailing list
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-- Byron Songer
Full-timing to enjoy the USA
Former owner but still an admirer
GMC paint schemes at -
http://www.songerconsulting.net

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